A baseball has a momentum of 6.0kg*(m)/(s) south and a mass of 0.15kg. What is the baseball's velocity?

Answers

Answer 1

A baseball weighs 0.15kg and has a south momentum of 6.0kg m/s. The speed of the baseball was (v) = 40 m/s south.

It's a physical magnitude that measures the product of the mass by the velocity of a particle. Its units in the International System is kg. m/s and the formula is

p = mv

where

m is the mass of the object

v is its velocity

In this problem, we know:

p = 6.0 kg m/s is the momentum of the baseball

m = 0.15 kg is its mass

Therefore, we can re-arrange the equation to find the baseball's velocity:

v = p/m

v = 6.0/0.15

v = 40  m/s south

Learn more about  velocity problems

https://brainly.com/question/28320861


Related Questions

An argon ion laser emits light at 488 nm. What is the frequency of this radiation

Answers

The frequency of the radiation will be 6.098 x 1014 Hz.

The frequency of a radiation is measured in hertz (Hz) and is the number of complete cycles per second of a wave. It is commonly used to measure electromagnetic radiation, such as radio waves and x-rays.

An argon ion laser emits light at a wavelength of 488 nm.

To find the frequency of this radiation, we need to use the equation f = c/λ, where

c is the speed of light (299,792,458 m/s) and

λ is the wavelength in meters.

Plugging in 488 nm (or 0.000488 m) for λ gives us a frequency of 6.098 x 1014 Hz.

To learn more about radiation, click here:

https://brainly.com/question/893656

#SPJ4

Gravity on the surface of the moon is only 1 6 as strong as gravity on the Earth. What is the weight of a 35 kg object on the Earth

Answers

Answer:

Weight of a 35kg object on Earth is 350N, while it is 56N on the Moon.

Explanation:

The conversion of mass (kg) to weight (N) on Earth is 1kg to 10N.
Thus, the weight of a 35kg mass on Earth is
35kg × 10 = 350N

On the Moon, conversion of mass to weight is 1kg to 1.6N.
Thus, the weight of a 35kg mass on the Moon is
35kg × 1.6 = 56N


Remember, mass remains constant regardless of location, while weight depends on the strength of the gravitational field.

Helpppppppppppppppp its timeddddddddddd

Answers

Answer:

The answer is the third option.

Explanation:

The electrostatic force, Coulomb's force, is a force that depends on the inverse of the square distance, it is a non-contact force.

On the other hand, stretched spring is a contact force, it needs a contact external force.

Therefore, the answer is the third option.

I hope it helps you!

The types of electronic components include diodes, transistors,
and integrated circuits.
TRUE
FALSE

Answers

True they types of electronic components include both diodes and transistors

Yep. Those three things are all electronic components.

There are a lot more besides those.

An object accelerates at a rate of 8 m/s² over a displacement of 9 m. If the object started with a velocity of 5 m/s, what is its final velocity?

Answers

Answer:

13 m/s

Explanation:

The computation of the final velocity is shown below;

We know that

v^2 = u^2 + 2as

Here v represent the final velocity

u denotes the initial velocity

a denotes the acceleration

And, s denotes the displacement

So, the final velocity is  

v^2 = (5)^2 + 2(8)(9)

= sqrt(25 + 144)

= sqrt(169)

= 13 m/s

Obviously, everybody has different skill sets. The goal of this lesson is not to become an Olympic volleyball player. Instead, it is to learn/improve some basic volleyball skills. For this assessment, you should experiment with your passing, serving, and setting. (Perhaps the local YMCA has pick-up volleyball games in which you could participate.)

After you have practiced each of these three skills, respond to the following questions in writing, for each of the three skills. Your essay should be at least 200 words.

What did you find most challenging about mastering this skill? Why?
What did you find easiest about mastering this skill? Why?
clearly demonstrate that you understand the discreet steps of the skills;
specify individual steps that you found both challenging and easy;
demonstrate your ability to effectively reflect on your own athletic abilities; and
be at least one paragraph,

Answers

'What did you find most challenging about mastering this skill?'

Ahh- What I found most challenging about the passing skill is hitting the ball the right direction. The last time I tried to pass the ball it hit someone in the face. But when I got a hang of it, It was easy until middle game. I tried to hit the ball and I faceplanted into the bar..-

'What did you find easiest about mastering this skill?'

The easiest? Well for me, nothing was easy. I couldn't even serve the ball without hitting it thw wrong direction!! I can't serve or pass a ball without it going the wrong direction or the ball hitting someone in the face! It gotten easier and easier as the game went particuallarly well. My team did end up winning thanks to one of my teammates. I can't play volleyball well at all. It was easy in some cases but hard at the same time.

Hope this helps you! :)

Answer:

Explanation:

This is not exactly Physics but here you go:

What did you find most challenging about mastering this skill? Why?

Setting is the most challenging because it requires many different techniques. There is a designated setter in competition games exactly because it is the most challenging position. It also requires lot of practices with your teammates.

What did you find easiest about mastering this skill? Why?

Serving is the easiest because you literally have the ball in your hand when you serve. Now it is not as easy if you want to make a serve that is difficult to receive. When a player fails to serve, it is usually not because it is tough but rather the player is trying to make a hard or spinning serve.

I am not particularly athletic and above is from a little play time I have had with volley ball in high school.

4. Driving home from school one day, you spot a ball rolling out in the street. You brake for 1.20 s, slowing your 950 kg car from 16 m/s to 9.5 m/s. a. What was the average force exerted on your car during braking

Answers

As stated in the preceding statement When braking, an automobile experiences an average force of 5,145.8 N.

Describe acceleration:

An object is considered to have been pushed if its velocity changes. Depending on whether an item is moving faster, slower, or in a new direction, its velocity may change. Examples of acceleration include a falling fruit, the moon orbiting the earth, and an automobile that has stopped at a stop sign.

v = v o + a t  ( the acceleration will be negative )

9.50 = 16.0 + a * 1.2

a * 1.2 = -16.0 + 9.50

a * 1.2 = - 6.5

a = - 6.5 : 1.2

a = - 5.4167 m/s²

F = m * a

950 kg * 5.4167 m/s²

F = 5,145.8 N ( the average force exerted on a car during braking )

Learn more about Acceleration from given link

brainly.com/question/605631

#SPJ4

Turn your head _______ and right and glance over your shoulder to view what cannot be seen in the side-view mirrors. back down left up Submit answer

Answers

Turn your head left and right and glance over your shoulder to view what cannot be seen in the side-view mirrors.

What is mirror ?

An item that reflects an image is a mirror or looking glass. When focused through the lens of the eye or a camera, light that reflects off a mirror will reveal a picture of whatever is in front of it. Mirrors reflect light at an equal but opposite angle, which changes the direction of the image.

What is direction?

Direction can refer to a thing's course, the route one must take to get there in particular, the direction something is beginning to take shape, or the direction you are facing. Going straight instead than left is an example of direction.

Therefore, Turn your head left and right and glance over your shoulder to view what cannot be seen in the side-view mirrors.

Learn more about mirrors from the given link.

https://brainly.com/question/1126858

#SPJ4

Why is solar energy called renewable?

Answers

Solar energy is called renewable because it is abundant in nature and can be filled repeatedly.

Energy is power or strength that can be used for various activities. Energy cannot be created but can be changed from one form to another and can be transferred.

Solar energy is energy produced from the radiant heat of sunlight that can be utilized by all living things on earth, both humans, animals and plants. Solar energy can also be used as an alternative energy because it is environmentally friendly. This energy is included in renewable energy because the amount is abundant and endless even though it is used in large quantities.

Learn more about renewable energy at:

https://brainly.com/question/17373437

#SPJ4

The energy your body gets from food is originally provided by which nuclear
reaction?
A. Positron emission
B. Nuclear fission
C. Gamma decay
D. Nuclear fusion
SUBMIT

Answers

Answer:

Nuclear Fusion

Explanation:

The process releases energy because the total mass of the resulting single nucleus is less than the mass of the two original nuclei. The leftover mass becomes energy.

a race car is moving at a constant speed around a track.What about the race car is changing and why

Answers

The answer is Velocity

velocity is speed but with direction and since the car is moving AROUND the track it means the direction is changing so the velocity is changing

A race car is moving at a constant speed around a track. The race car is changing its velocity as the direction of motion changes.

What is velocity?

The primary indicator of an object's position and speed is its velocity. It is the distance that an object travels in one unit of time. The displacement of the item in one unit of time is the definition of velocity.

The rate at which a body's displacement changes in relation to time is known as its velocity. Velocity is a vector quantity with both magnitude and direction. SI unit of velocity is meter/second.

As the race car is moving at a constant speed around a track, the magnitude of velocity remains same but during race it may changes its direction of motion, that is why, velocity of it, which depends on both magnitude and direction, may changes.

Learn more about velocity here:

https://brainly.com/question/18084516

#SPJ2

What is the total resistance of two 26 ohm resistors in series?
A 52 ohms
B 13 ohms
C 39 ohms
D 26 ohms

Answers

Answer:

I finish that module I'm sure it's D

D. It’s only asking each resistors ohms

A sound wave generated by a musical note has the characteristics presented in the table. What is the missing value?

Air 346 55 6. 3

Glass 5,640 55 102

Brass 4,700 55 ?



A.

112

B.

100

C.

85

D.

98

Answers

The missing value is D. 98

The table provides information about the speed (m/s), frequency (Hz), and wavelength (m) of a sound wave generated by a musical note, in different mediums (air, glass, and brass). The frequency of the sound wave is constant across the three mediums, but the speed and wavelength will vary depending on the medium. Since we know the frequency and wavelength, we can use the formula:

Speed = Frequency x Wavelength

to find the missing value of the speed of the sound wave in brass.

4,700 = 55 x Wavelength

Wavelength = 4,700/55 = 85.818...

So the missing value is 98 (approximately) in the table.

Learn more about sound waves here: https://brainly.com/question/1199084

#SPJ4

Can anyone answer this question its a science question NO LINKS !!!!
Work is equal to force times
joules
distance
time
watts

Answers

I think it’s Joules but i’m not sure, sorry if i’m wrong

A cannonball is fired with a velocity of 10 m/s upward from horizontal and 30 m/s to the west. What is the angle and direction of the cannonball

Answers

The angle and the direction of the cannonball is calculated to be about 18.435° of west.

Expressed as the ratio between two sides of a right triangle or an angle measure along with a given side, trigonometry can find unknown angle measures and lengths.

Given that,

Velocity of cannonball upward = 10 m/s

Velocity of cannonball to the west = 30 m/s

One of the side lengths reflects the velocity going north (or upward from the horizontal) at 10 m/s. Another side length depicts the speed moving west.

Angle can be calculated by applying trigonometric relation.

tan θ = northward velocity of the cannonball/westward velocity of the cannonball = 10/30

tan⁻¹(tan θ) = tan⁻¹(10/30)

θ = 18.4349°

As, the cannonball was measured from the horizontal, the angle and the direction of the cannonball is about 18.435° of west.

To know more about cannonball:

https://brainly.com/question/28767194

#SPJ4

When there is no motion between objects, what is the relationship between the magnitude of the static friction, f, and the normal force, N?

Answers

The static friction and the normal force are related to each other as ≤.

Static friction is a force that prevents an item from moving. The friction encountered when persons attempt to move a stationary object on a surface without actually causing any relative motion between the body and the surface on which it is located. Static friction occurs between two fixed things, whereas kinetic friction occurs when two items move. Static friction varies while kinetic friction remains constant.

The normal force is the force exerted by surfaces to prevent solid objects from passing through them. A contact force is normal force. According to Newton's third law, this force on the platform must be followed by an equal and opposite force delivered to the man by the platform. This force is identical to the normal force.

To learn more about static friction and normal force, here

https://brainly.com/question/28980615

#SPJ4

Which type of engine takes in air, accelerates it, and pushes it out the exhaust nozzle to produce thrust that pushes the aircraft forward

Answers

A jets engine is a device that produces a strong pushing force known as thrust out of liquid fuel that is high in energy.

What do aircraft turbine engines do?

A rotary engine called a gas turbine converts the flow of combustion into energy.Axial or centrifugal compressors (or both) can be used to boost air pressure and temperature before it enters the combustion chamber. Ambient air is pulled into the engine intake.

How is thrust produced by a jet engine?

By raising internal engine pressure, jet or rocket engines generate thrust.This higher pressure inside the jet and rocket engine causes the forward force to be greater than the backward force.

To know more about type of engine visit:

https://brainly.com/question/11417828

#SPJ4

What is the equation for torque use D for lever arm and F for force?

Answers

Torque is calculated using the formula =|r| |F|sin = | r | | F | sin, where |r| is the size of the lever arm, |F| is the size of the force vector, and is the angle formed between the two vectors.

force a "F" What is the torque calculation equation?

Under ideal circumstances, M = F x r would be the equation for drive torque. In this instance, r denotes the length of a lever that is fastened to the axis of rotation and whose end is subject to a perpendicular force, F. The point of application, however, may alternatively be chosen at random.

R and F in the torque formula: what are they?

The rotational rate (or "r") of an object is the amount by which a force acting on it rotates it. We'll refer to the force a "F" The moment arm, indicated by the letter "r," is the distance from the pivot point to the point at which the force acts.

To know more about Torque visit:-

https://brainly.com/question/6855614

#SPJ4

A typical spectrophotometer has a path length (the distance light travels through a sample) of 1 cm. Light travels at approximately 3.0 x 108 m/s in vacuum. How long does it take (in ns) for light to travel 1.0 cm

Answers

The time taken is 3.33 ns for light to travel 1.0 cm in a spectrophotometer.

What is time?

Time is defined as a scalar quantity that describes the progression of events in the universe. It is often considered to be the fourth dimension of spacetime, along with the three dimensions of space. Time is closely related to the concepts of causality, or the relationship between cause and effect, and is considered to be a fundamental aspect of the physical universe.

The distance light travels in 1 cm is equal to 1 cm x 10^-2 m. To find out how long it takes for light to travel this distance, we can use the formula:

time = distance / speed

Where distance is the distance light travels (1.0 cm x 10^-2 m), and speed is the speed of light in vacuum (3.0 x 108 m/s).

time = (1.0 cm x 10^-2 m) / (3.0 x 108 m/s)

time = 3.33 x 10^-10 s

To convert this time to nanoseconds (ns), we can multiply the time in seconds by 1 billion (10^9):

time = 3.33 x 10^-10 s x 10^9 ns/s

time = 3.33 ns

Therefore, the time taken is approximately 3.33 ns for light to travel 1.0 cm in a spectrophotometer.

To learn more about time from the given link:

https://brainly.com/question/26046491

#SPJ4

Which is an example of radiant energy producing motion

A) a battery powered fan
B) a solar powered light bulb
C) solar powered fan
D) battery powered light bulb

Answers

Answer:

i think D

Explanation:

correct me if I wrong

The Correct answer is D!


Melanye and Kaitlynn were traveling on a train for 6 hours. Over that time the train was at an average velocity of 70km/hr west. How far did Melanye and Kaitlynn travel?

Answers

The way he got the wrong guy to get back into the car he was just saying that I didn’t need it for me so he said no I’m gonna do tell you I have a little girl that was going on a little bit of a girl and I

How do you calculate sound intensity level?

Answers

Sound intensity level (SIL) is measured in decibels (dB).

What is sound?

Sound is a type of energy created by the vibration of particles in a medium, such as air, that can be heard when it reaches a person or animal's ear. Sound can travel through solids, liquids, and gases, and can have different pitches and volumes.

Sound intensity level is defined as the ratio of the sound pressure to a reference pressure level. It is calculated using the following equation: SIL (dB) = 10 log10 (I/I_0), where I is the sound intensity and I_0 is the reference sound intensity equal to 10^−12 W/m^2.

To know more about sound,

https://brainly.com/question/29159910

#SPJ4

How much work is done by the environment in the process shown in the figure? Express your answer with the appropriate units
IA Wasxt = Value Units Submit Previous Answers Request Answer incorrect; Try Again; 19 attempts remaining Part B Is energy transferred from the environment to the system or from the system to the environment? O Energy is transferred from the environment to the system. O Energy is transferred from the system to the environment. Submit

Answers

Wasxt is not good. As a result, the system transfers energy to the environment.

How is work completed?

Force may be used to transmit energy. The quantity of energy a force expended to move an item is referred to as the work done. The relationship between Work and Energy is so straightforward.

The work done by a force is calculated as the product of the object's displacement and its component of the applied force in the displacement direction.

Using energy efficiency

Ki + Ui + Wext = Kf + Uf + dEth

Substitute the value by data chart in above equation we get,

4 + 1 + Wasxt = 1 + 2 + 1

Wasxt = 4 - 5

Wasxt = -1 J

Since Wasxt is negative So energy is transferred from the system to the environment.

For such more question on Work and Energy .

https://brainly.com/question/22236101

#SPJ4

Why can you see your image in a pond and why does the image faint when the water is not still? anyone?​

Answers

Answer:

Reflection

Explanation:

this because water reflects light

Which of the following types of microscopes reveals the surface features of small molecules? - a confocal microscope - a fluorescent microscope - a transmission electron microscope (TEM) - an atomic force microscope

Answers

The types of microscopes that reveals the surface features of small molecules is an atomic force microscope.

The Atomic Force Microscope (AFM) is useful for imaging the surface topography of living, soft materials in their natural settings. It can be used to examine the inherent elastic modulus and receptor-ligand interactions of cells and extracellular matrix, among other mechanical properties. SEM pictures can investigate surface features that are several tenths of a nanometer in size, but AFM resolution is less than 0.1 nm. As a result, AFM can discern objects on flat surfaces with molecular dimensions.

To learn more about Atomic Force Microscope (AFM), click here:

https://brainly.com/question/17781933

#SPJ4

A small rectangular object of unknown material is examined in the laboratory. Iron filings and a compass needle are not attracted to the object. The object is suspended from a light string and is free to swing but does not align itself with Earth’s magnetic field. A strong magnetic field is switched on perpendicular to the long axis of the object. The object changes its orientation so that it partially aligns with the magnetic field. After the field is switched off, the object and string eventually return to their original orientation. Once again, it is observed that iron filings and a compass needle are not attracted to the object. The object most likely is exhibiting the property of

Answers

The object is likely exhibiting the property of diamagnetism.

A small rectangular object of unknown material is examined in the laboratory. Iron filings and a compass needle are not attracted to the object. The object is suspended from a light string and is free to swing but does not align itself with Earth’s magnetic field. A strong magnetic field is switched on perpendicular to the long axis of the object. The object changes its orientation so that it partially aligns with the magnetic field. After the field is switched off, the object and string eventually return to their original orientation. Once again, it is observed that iron filings and a compass needle are not attracted to the object. The object most likely is exhibiting the property of Diamagnetism.

Diamagnetism is a type of magnetism that is exhibited by all materials, and it is the weakest type. It results in a repulsive force between the material and an external magnetic field. This repulsion is what caused the object to partially align with the magnetic field when it was switched on.

The lack of attraction between the iron filings and the compass needle indicates that the object is not ferromagnetic or paramagnetic, which are both stronger types of magnetism. When the magnetic field was switched off, the repulsive force between the object and the field was no longer present, allowing the object and the string to return to their original orientation.

To know more about Diamagnetism:

brainly.com/question/15077478

#SPJ4

4. A 55.0 g object connected to a spring with a force constant of 35.0 N/m oscillates on a horizontal, frictionless surface with an amplitude of 8.00 cm. a) Find the total energy of the system. 112 mJ b) Find the speed of the object when the position is 1.20 cm.

Answers

According to the given data the total energy (E) of the system is 11.2 m J.

What is an illustration of oscillation?

A periodic movement between two sites is what is referred to as oscillation in this type of behavior. Examples of oscillating motion include plucking a guitar string, pendulum swinging, and pogo stick bouncing. The major distinction between oscillation, vibration, and simple harmonic motion is that oscillation is a general term for any repeating fluctuation about a central value, whereas vibration is a term used especially to describe mechanical oscillations.

Energy is given by-

E= 1/2KA²

E = 1/2 ×N/m× (8×10∧-2 m)²

​E = 11.2 m J

Speed of the object-

v = ω[tex]\sqrt{A2-x2}[/tex]

v = [tex]\sqrt{K/m}[/tex]    [tex]\sqrt{A2 - x2}[/tex]

v = [tex]\sqrt{35/55*10-3}[/tex] ×( (8×10-2)∧-2 - (1.20 × 10-2)∧2 )[tex]^{-1/2}[/tex]

v = 25.22 × 0.079

v = 2 m/s.

To know more about oscillations visit :-

brainly.com/question/15780863

#SPJ4

How does convection cause tectonic plates to move?

A
Convection keeps the plates thin enough to move.

B
Convection makes the plates solid enough to move.

C
The rising heat of convection currents moves the almost-liquid rocks.

D
The pressure of convection bends rocks until they break completely.

Answers

The plates become sufficiently stable by convection. The almost liquid rocks are moved by the convection currents' growing heat, hence option C is correct.

What are tectonic plates?

Rocks flex under the pressure of convection until they entirely fracture. Radiation decay in the core causes convection currents, which are produced by heat rising and sinking inside the mantle.

In convection currents, the plates are moved. The separation of plates occurs when convection currents split close to the Earth's crust.

Therefore, the convergence of convection currents causes plates to move in the same direction.

Learn more about tectonic plates, here:

https://brainly.com/question/18612190

#SPJ1

What type of stretch stretches would benefit an individual preparing for activity?

Answers

Dynamic stretching is typically recommended for individuals preparing for physical activity.

Dynamic stretching involves movements that gradually increase in range of motion and muscle length, such as arm swings, leg swings, and torso twists.

These exercises help to improve flexibility, range of motion, and muscular coordination, as well as increase blood flow to the muscles to prepare them for activity. Static stretching is best done after the activity to help reduce muscle soreness and keep the muscles flexible.

Learn more about Dynamic stretching:

https://brainly.com/question/1484910

#SPJ4

1) compare the isochron map to the topographic map of the seafloor in the previous investigation. which seafloor features are associated with young crust what can you infer from this?
2) how does the age of the seafloor change as you move away from these features?
what can you conclude from this evidence?

Answers

Answer:The isochron map shows the age of the crust of the seafloor, while the topographic map shows the physical features of the seafloor, such as mountains, valleys, and plateaus. Young crust is typically associated with features such as mid-ocean ridges, which are undersea mountain ranges that are formed by the movement of tectonic plates. Mid-ocean ridges are typically associated with high heat flow and volcanic activity, which can result in the formation of new crust.As you move away from these features, the age of the seafloor generally increases. This is because the crust at these features is being continually created through the movement of tectonic plates, while the crust at locations further away from these features is older and has had more time to cool and become more stable.

From this evidence, you can conclude that the seafloor is not a static feature and is constantly being renewed through the movement of tectonic plates and the creation of new crust at mid-ocean ridges. The age of the seafloor can be used to help understand the history and dynamics of the Earth's crust and how it has evolved over time.

HOPE IT HELPS!

Other Questions
will give brainliest A line passes through the points (2,4) and ( - 6,8). Another line passes through the points (2,7) and ( - 2,3). At what point do these lines intersect? Enter your answer in the boxbelow. Please help me!!! I will try to give brainliest!!! which expression gives the number of magazines printed after t minutes ? A) 2tB) 70t C) t+70 D) 2t + 70 plssss help me correct answer gets brainliest Joshua is going to invest $490 and leave it in an account for 5 years. Assuming the interest is compounded continuously, what interest rate, to the nearest tenth of a percent, would be required in order for Joshua to end up with $620? Observe the three sections of the photo below. Which section of the photo is made up of the most number of pixels? Segment ___Please Help!! I need the answers quick please answer this math question At the places where 180 degrees of longitude and the International Date Line meet, there is a change of _________ as you cross the International Date Line. Pam is playing a board game with her little sister. Given that she has rolled a 3 on the die on her last four turns, what is the probability that she rolls a 3 on the die on her next turn? Need need help with it How do you think the countries of eastern Europe responded to Germanys attempts to acquire living space? What about the United Kingdom, France, and the United States? what is the area and perimeter of 73 ft and 93 ft 5Select the correct answer.Which term defines a well-supported, explanation of an occurrence of a natural phenomenon?A.hypothesisB. biasC. observationD. theoryPlease help me What does Mrs Hale represent? Dans le frigo, il reste six (1) 1 of 12, quelques (2) 2 of 12, une petite (3) 3 of 12 et trois (4) 4 of 12. M. Abad va utiliser ce qu'il reste dans le frigo pour prparer (5) 5 of 12. Mme Abad va acheter des (6) 6 of 12 et des (7) 7 of 12. M. Abad va acheter des (8) 8 of 12 HELP LIMITED TIME PLEASE HELP ASAP!!! THE PROBLEM I PUT IN PICTURES! HELP PLEASE!!!!!!! I DONT UNDERSTAND SPANISH What is the relationship of III-1 to 111-2? Is financial literacy education enough to create a fair society? If yes, explain. If no, explain what needs to change? a ____ operation searches data in a table and retrieves records based on certain criteria.