A car travels at an average speed of 100km per hour. What distance does it cover in 5hrs

Answer:

m - mass of each liquids (all masses are equal )

C_1C 1 - specific heat of the first third C_2C 2 - specific heat of the second  liquid

C_3C 3- specific heat of the third liquid

Temperature of liquids: T_1=7 ◦C,T_2=20◦C, T_3=34◦CT

1 =7◦C,T 2 =20◦C,T 3=34◦C

Temperature of 1+2 liquids mix: T_{12}=11^oCT

12 =11 oC

Temperature of 2+3 liquids mix: T_{23}=22.6^oCT

23=22.6 oC

Temperature of 1+3 liquids mix: T_{13} - ?T 13 −?

When the first two are mixed:

m C₁ (T₁ − T_{12}) + m C₂ (T₂ − T_{12}) = 0 \\ C₁ (7− 11) + C₂ (20 − 11) = 0\\ 4C_1=9C_2\\ C_1=2.25C_2mC₁(T₁−T 12)+mC₂(T₂−T 12 )=0C₁(7−11)+C₂(20−11)=04C \1=9C 2C 1 =2.25C 2

​When the second and therd are mixed:

m C_2 (T_2 − T_{23}) + m C_3 (T_3 − T_{23}) = 0 \\ C_2 (20−22.6) + C₂ (34 −22.6) = 0\\ 2.6C_2=11.4C_3\\ C_2=4.38C_3mC 2 (T 2 −T 23 )+mC 3 (T 3 −T 23 )=0C 2(20−22.6)+C₂(34−22.6)=02.6C 2 =11.4C 3C2 =4.38C 3

​When the first and therd are mixed:

m C_1 (T_1 − T_{13}) + m C_3 (T_3 − T_{13}) = 0 \\ C_1 (7−T_{13}) + C_3 (34 −T_{13}) = 0\\ C_1=2.25C_2=2.25(4.38C_3)=9.86C_3\\ 9.86C_3 (7−T_{13})=-C_3(34 −T_{13})\\ 9.86 (7−T_{13})=-(34 −T_{13})\\ T_{13}=9.5^oCmC 1(T1 −T13)+mC 3(T3−T13 )=0C1 (7−T13 )+C 3(34−T 13 )=0C1 =2.25C2=2.25(4.38C3 )=9.86C39.86C3 (7−T13 )=−C3(34−T13 )9.86(7−T13)=−(34−T13 )T13 =9.5 oCT_{13}=9.5^oCT 13 =9.5 o C:

Answer:

wheres the statements

Explanation:

where its incomplete

Natural selection could act on a population of proto-cells on early Earth, selecting for those that were stable and had self-replicating, catalytic RNA that allowed them to grow and divide to produce similar daughter proto-cells. The correct option is option (B).

Natural selection could act on a population of proto-cells on early Earth. Proto-cells were early, simpler forms of cells that lacked DNA but had self-replicating, catalytic RNA. Through natural selection, those proto-cells that were more stable and had RNA molecules capable of self-replication and catalytic functions would have had a reproductive advantage.

These traits would allow them to grow, divide, and produce similar daughter proto-cells. Over time, this selection process could have led to the development of more complex and stable cellular structures, eventually leading to the emergence of cells that utilize DNA as their genetic material.

Therefore the correct option is option B.

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The complete question is:

Which statement about natural selection on early Earth is correct?

A. Natural selection could only act on populations of living organisms that had DNA as their genetic material.

B. Natural selection could act on a population of proto-cells on early Earth, selecting for those that were stable and had self-replicating, catalytic RNA that allowed them to grow and divide to produce similar daughter proto-cells.

C. Natural selection acted on populations of proto-cells on early Earth in order to make them more like modern living cells that have DNA as their genetic material.

Answer:

[tex]R= 960 \: Ohm[/tex]

Explanation:

P = 60 W

V = 240 V

[tex]P= VI[/tex]

[tex]\implies I= \frac{P}{V}[/tex]

[tex]\implies I= \frac{60}{240}[/tex]

[tex]\implies I= 0.25 A[/tex]

Now, by Ohms law

[tex]R= \frac{V}{I}[/tex]

[tex]\implies R= \frac{240}{0.25}[/tex]

[tex]\implies R= 960 \: Ohm[/tex]

Answer:

960 Ω

Explanation:

Each of the semicircular canals is especially positioned to detect angular acceleration in one of the three planes.

Angular acceleration is defined as the pace of change of angular velocity concerning time.

Each of the semicircular canals is especially positioned to detect angular acceleration in one of the three planes.

The semicircular canals are biomechanical sensors that detect and encode angular motion of the head in three dimensions.

Hence semicircular canals are the correct answer for the blank.

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Given :

[tex] \\ [/tex]

To find :

[tex] \\ [/tex]

We know :

[tex] \boxed{ \rm Force=Mass\times Acceleration}[/tex]

By using this formula we can find acceleration.

[tex] \dashrightarrow \sf Force=Mass\times Acceleration \\ [/tex]

[tex] \\ [/tex]

[tex] \dashrightarrow \sf900=9\times Acceleration \\ [/tex]

[tex] \\ [/tex]

[tex] \dashrightarrow \sf900 \times \dfrac{1}{9} =Acceleration \\ [/tex]

[tex] \\ [/tex]

[tex] \dashrightarrow \sf \cancel9 \times 100 \times \dfrac{1}{ \cancel9} =Acceleration \\ [/tex]

[tex] \\ [/tex]

[tex] \dashrightarrow \sf \dfrac{100}{1} =Acceleration \\ [/tex]

[tex] \\ [/tex]

[tex] \dashrightarrow \sf Acceleration = \dfrac{100}{1} \\ [/tex]

[tex] \\ [/tex]

[tex] \dashrightarrow \bf Acceleration = 100\: ms^{-2}[/tex]

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Related Concept :

Define Acceleration:

Main formula :-

a = (Vf - Vi)/t

where :-

Define Force :

Main formula:

f = m × a

where :-

Define Mass :

Main formula:

m = v × d

where:-

Answer:

No

Explanation:

Crystizaltion of magma turns into indeginous rocks which then turns into sediment after weathering and erosion.

Answer:

Photoelectric Effect

Explanation:

Photoelectric Effect is a phenomenon in which electrically charged particles are released from or within a material when it absorbs electromagnetic radiation.

Answer:

90

Explanation:

The bottom number on the element is the number of protons and the top number is the total of the protons + neutrons

Answer:

other things remain constant 

Explanation:

Answer:

B) Other things remain constant.

Explanation:

For edmentum users.

Answer:

51.92 m

Explanation:

Given

Formula

Solving for R

Answer:

Exactly 0.03042 carbon-14 is remaining.

Roughly 0.03 Carbon-14 is remaining. (When/If Multiple Choice)

Explanation:

Not a physics question, this is chemistry, but I'll answer.

First, divide 17,000/5700 to find the t, or time.

t = 2.98245614 or 2.98.

If it originally contained .24 grams, and a half life means x/2,

you would use the formula x/2^p, with p being the number of half lives

(these variables are made up, you can use any you would like)

In 17,000 years, the palm fossil experienced 2.98 half lives.

Thus meaning, using our equation, we would find (.24)/2^2.98

This equals 0.030418784 carbon-14 remaining to be exact.

(For Multiple Choice, it may be required to round to For Multiple Choice, it may be required to round to 3, so .24/2/2/2 or .24/2=.12 then .06 then it equals :  .03 Carbon-14)

Carbon -14 is used to date a palm fossil that originally contained 0.24 grams of carbon -14. The half life is 5700 years. If the fossil is found to be 17,100 years old then 0.0303 g of carbon -14 does it contain now.

The process by which an unstable atomic nucleus loses energy through radiation is known as radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration). A radioactive substance is one that contains unstable nuclei. Alpha decay, beta decay (-decay), and gamma decay (-decay) are three of the most prevalent forms of decay, all of which entail the emission of one or more particles. The mechanism responsible for beta decay is the weak force, while the other two are regulated by electromagnetism and nuclear force. Electron capture is a fourth form of common decay in which an unstable nucleus grabs an inner electron from one of the electron shells.

According to decay formula,

N(t) = N₀ e^(-λt)

Given,

N₀ = 0.24g

t = 17100 years

λ = 0.693/T

Where T is half life.

λ = 0.693/5700 = 1.21 × 10⁻⁴

Putting all the values in the equation,

N(t) = 0.24g e^(-1.21 × 10⁻⁴ ×17,100)

N(t) = 0.0303 g

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Answer:

the turtle was finished faster but the rabbit was faster

Explanation:

Answer:

The question of analog vs. digital audio is one of the more hotly debated questions in the world of music, film, and media today. Does digital sound better? Does analog sound better? Is there even a noticeable difference?

It’s impossible to understand the difference completely without understanding what distinguishes analog audio from digital audio. A full discussion of these terms is best left to your curriculum and discussions with your mentor in the studio. For now, though, here’s a brief explanation of what these two words mean, and the differences between them.

Explanation:

For a 42.0-cm-diameter wheel, consisting of a rim and six spokes,the angular speed is mathematically given as

w=118.6 rad/s

Generally, the equation for the  Conservation of energy  is mathematically given as

K1+U1=K2+U2

Therefore

Mgh+0=0+(1/2)MV2+(1/2)Iω2

Where

M=m+6m

M=2rλ(π+3)

Therefore

[tex]2r \lambda (\pi+3)gh=0.52r \lambda (\pi+3)(rw)2+(1/2)[(2 \pi \lambda r)r2+6( \lambda r)r2/3]w2[/tex]

[tex]w=\sqrt{[(\pi+3)*9.8*53/(0.42/2)2*(\pi+2)[/tex]

w=118.6 rad/s

In conclusion, The angular speed is

w=118.6 rad/s

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Answer:

electric circuit............

which grade

Answer:

4.3s

Explanation:

a=v-u/t

t=v-u/a

t=26-20/1.4=4.28

=4.3

Answer: heat, energy that is transferred from one body to another as the result of a difference in temperature. If two bodies at different temperatures are brought together, energy is transferred—i.e., heat flows—from the hotter body to the colder.

Explanation:

Answer:

heat, energy that is transferred from one body to another as the result of a difference in temperature. If two bodies at different temperatures are brought together, energy is transferred—i.e., heat flows—from the hotter body to the colder.

Explanation:

Answer:

The Speed of the throw that is required to create enough impulse, to change the direction of the momentum is: -1.81m/s

Explanation:

m1=95kg

m2=21kg

V1=.4m/s

V2=?

V'=<0 or -.01 at lowest.

for the Impulse formula, I found: m1 x V1 + m2 x V2 = <0

so,

(95) x (.4) + (21) x (V2)=<0

38kgm/s+(21kg x V2)=<0 or -0.01m/s

I found that V2 was equivalent to -1.81, and when you plugin the value, you get the equation

(95) x (.4) + (21) x (-1.81) = -0.01m/s

39 m

Explanation:

W = FS

S = W/F

S = 780 J / 20 N

S = 39 Meters

Answer:

[tex]39m[/tex]

Explanation:

[tex]w = f \times s[/tex]

[tex]780 = 20 \times s[/tex]

[tex]s = 780 \div 20[/tex]

[tex]s = 39m[/tex]

Answer:

yes

Explanation:

but no i dont know anyways what is the question

The magnitude of the force applied by the wall on the ball while smashed is 38.462 newtons.

After a quick reading of the statement we conclude that the impact theorem shall be useful to determine the dynamic force required to stop the ball when smashed. The impulse theorem results from the combination of the Newton's laws of motion, principle of energy conservation and work-energy theorem:

[tex]m \cdot v_{o} = F\cdot \Delta t[/tex]     (1)

Where:

If we know that m = 1 kg, [tex]v_{o} = 5\,\frac{m}{s}[/tex] and Δt = 0.13 s, then the impact force is:

F = (1 kg) · (5 m/s)/(0.13 s)

F = 38.462 N

The magnitude of the force applied by the wall on the ball while smashed is 38.462 newtons. [tex]\blacksquare[/tex]

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Answer:

I found out that you could separate the sand because the filterstion and all the materials uses their elements to filter it out

Findings say that one could separate the sand using the filtration and all the materials uses their elements to filter it out.

Filtration is the technique of segregating the components from a mixture.

In the given experiment, the filter is used to separate a mixture of sand and water.

This experiment can be successfully completed through the filtration process.

Thus, one could separate the sand using the filtration and all the materials uses their elements to filter it out.

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The greatest variation in size, mass, and luminosity occurs in elliptical galaxies.

This is defined as the difference from the norm which is exhibited by objects.

In the solar system, variation in features such as size, mass, and luminosity occurs mostly in elliptical galaxies due to presence of array of stars thereby making it the most appropriate choice.

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Answer:

(a)    that is a true statement

The god that Achilles fought in the Illiad was the god Hector and he ended up killing him.

He was a warrior that fought in the Trojan war. After the death of Patroclus. Achilles had to fighty the Trojan Army singlehandedly.

It was the war that saw the end of Hector and also he joined the war for the avenging of the death of Petroclus.

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Answer:

I think its D.

Explanation:

I think this because sound waves move up and down im pretty sure but i might have that mixed with radio waves

Answer:

Continuous reinforcement delivers the reinforcement every single time the target behavior is delivered. (For example, if the target behavior for the dog is sitting when the owner says "sit", the treat (reinforcement) would be given whenever the dog follows the command). It follows a schedule-like reinforcement.

Intermittent reinforcement delivers the reinforcement to responses but are not consistent.

Answer:

1.62

Explanation:

F = kx

8.5 = 5.25 * x

8.5/5.25 = 1.62