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Answer:

Pressure is 1.96 × 10^12 Pa

Explanation:

[tex]{ \bf{pressure = \frac{force}{area} }}[/tex]

height = 4 cm = 0.04 m

density = 20 g/cm³ = 20,000 kg/m³

But for force:

[tex]{ \sf{force = mass \times acceleration}} \\ { \sf{force = ( \frac{density}{volume} ) \times acceleration}} \\ \\ { \sf{force = ( \frac{20000 }{0.04 {}^{3} }) \times 10 }} \\ \\ { \sf{force = 3.13 \times {10}^{9} \: newtons}}[/tex]

For area:

[tex]{ \sf{area = 0.04 \times 0.04 = 0.0016 \: m {}^{2} }}[/tex]

[tex] { \tt{pressure = \frac{3.13 \times {10}^{9} }{0.0016} }} \\ \\ = { \tt{1.96 \times {10}^{12} \: pascals}}[/tex]

Answer:

800 m

Explanation:

Acceleration (a) = Velocity (v) / Time(t)

a = (v-u) /t

where, v = final speed

u = initial speed

2m/s² = (40m/s - 0m/s)/t

that is, from rest is no speed.

2m/s² = (40m/s) /t

t = (40m/s)/2m/s²

t = 20 s

hence, the car has accelerated for 20 s.

From,

Velocity (v) = Displacement (d) /time(t)

displacement is the distance the car has travelled.

40m/s = d/20s

d = 40m/s × 20s

d = 800 m

Answer:

D is the answer

Explanation:

6.45×7.44= 47.98800

Which if we round of we get 48m

Hi,

The man on the ground in standing position has more pressure. This is because when he stands, only his legs are in contact with the ground. While lying, his body is more in contact with the ground, therefore, he exerts less pressure.

To the point, a man standing position on the ground had more pressure.

More is the area of contact, less is the pressure efforted.

Thank you...

Answer:

Hope it helps u

Be happy

Stay healthy

Answer:Protons

Explanation:

Answer:

1) mass = force / acceleration

2) acceleration = force / mass

Explanation:

Part 1)

Force = Mass x Acceleration

Divide both sides by acceleration

force / acceleration = mass

mass = force / acceleration

Part 2)

Divide both sides by mass

force / mass = acceleration

acceleration = force / mass

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

Answer:

i.

[tex]a = \frac{(v - u)}{t} \\ v - u = at \\ v = at + u[/tex]

ii.

[tex]a = \frac{(v - u)}{t} \\ v - u = at \\ u = v - at[/tex]

iii.

[tex]a = \frac{(v - u)}{t} \\ ta = v - u \\ t = \frac{(v - u)}{a} [/tex]

I hope I helped you^_^

Answer:

C) presence of chloroplast

Explanation:

Animal cells have Chloroplast unlike plant cells.

Explanation:

Answer:

if the distance between them is halved then gravitational force will be doubled....

golf, because I can aim at anything!

tennis because I'm not the best viewer. that is so fast and I won't be able to respond to the shot so fast

Using 3rd equation of kinematics

[tex]\\ \rm\longmapsto v^2-u^2=2as[/tex]

[tex]\\ \rm\longmapsto s=\dfrac{v^2-u^2}{2a}[/tex]

[tex]\\ \rm\longmapsto s=\dfrac{30^2-15^2}{2(5)}[/tex]

[tex]\\ \rm\longmapsto s=\dfrac{900-225}{10}[/tex]

[tex]\\ \rm\longmapsto s=\dfrac{675}{10}[/tex]

[tex]\\ \rm\longmapsto s=67.5m[/tex]

Answer:

The larger the number of charges flowing through the wire,the larger is the current flowing in the wire.

Explanation:

if the wire is large then large amount of current flows through the circuit.but if the wire is small then a smaller amount of current will pass through.

I hope this helps

Answer:

In the formula, 'X' is the temperature value to be converted, 'UFP' is the upper fixed point and 'LFP' is the lower fixed point of the temperature scale

Explanation:

LFP means Lower fixed point and UFP means Upper fixed point. Explanation: There are different scales with different lower fixed point and upper fixed point to measure temperature but the distance between these scales is same in any table or scale considered.

Answer:

Diffraction and Wavelengyh

Explanation:

Just adding up the horizontal and vertical components of both vectors separately.

Answer:

potassium and iodine

Explanation:

Answer:

hope that helps uh..☺

please mark this answer as brainlist

Answer:

hope this helps

Explanation:

one in which a positively charged nucleus is surrounded by one or more negatively charged electrons.

Each atom within a specific element has the same number of protons, which determines its atomic number. The correct statement.

This is inaccurate because the atomic number of an element is determined by the number of protons in the nucleus of its atoms, not by the number of neutrons.

Each atom within a specific element has the same number of protons, which determines its atomic number. The atomic number of an element is a fundamental property that defines the element and its place on the periodic table.

The number of protons in the nucleus of an atom of that element. Neutrons, do affect the atom's mass and stability but do not determine their atomic number.

The correct statement is Each atom within a specific element has the same number of protons, which determines its atomic number.

To know more about neutron and proton:

https://brainly.com/question/29771588

#SPJ3

7. Graphs

8. Experiment

9. Problem

14. Observations

**The rest of the points are correct .^_^

I hope I helped you^_^

Answer:

density is equal to mass divided by volume (m/v)

volume: 12×8×9=864cm³

75÷864=0.09

Answer: 0.09g/cm³

Answer:

Explanation:

Wattage = E * I

E = 240

I = 0.24

Wattage = 240 * 0.24

Wattage = 57.6

My answer is in the picture

Swipe the pictures to see the others

Answer:

IV family history of breast cancer or not.

DV chance of developing breast cancer. Hypothesis Someone with a family history of breast cancer will have a higher chance of developing it.

IV: Where the grass is placed: tree shade or direct sunlight.

Dv:The grasses growth rate

Hypothesis: Grass will grow faster in direct sunlight as opposed to tree shade

IV: Fresh veggies and fruit or not

Dv: how much the students eat: will they eat more or less?

Hypothesis The students will eat more in the lunchroom when Fresh veggies and fruits are served.

IV: The dog exercise everyday for 1 hour or not.

DV: The dogs barking: less or more.

Hypothesis: The dog will bark less when someone rings the doorbell if he exercises for 1 hour every day.

Explanation:

Observation When I wish my face before bed, I get less breakouts in the morning.

Question Does nightly face washing prevent morning breakouts?

IV Washing face at night or not

Dv How much breakouts in the morning.

Hypothesis Washing your face nightly decreases the occurrence of morning breakouts.