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4 years ago

Why do raindrops fall with a constant speed during the later stages of their descents?

1 answer:

6 0

Firstly they have a acceleration downwards due the force downwards due they gravitational field acting on it's mass.
as it falls it gains speed, and as it gains speed the air Resistance which is a upward force actin on the drop increases, eventually the rain drop's upward and downward forces are balanced and hence there is no RESULTANT force therefore no acceleration, so the drops falls in constant speed (terminal verlocity is a better term)

Are you wondering that why is the raindrop still moving given that the forces are balanced? If so according to Newton's 1st law an object will keep moving or Remain at rest until a RESULTANT force acts on it.

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The area of the piston to the master cylinder in a hydraulic braking system of a car is 0.4 square inches. If a force of 6.4 lb

Anit [1.1K]

Answer:

The force applied on one wheel during braking = 6.8 lb

Explanation:

Area of the piston (A) = 0.4 $in^{2}$

Force applied on the piston(F) = 6.4 lb

Pressure on the piston (P) = $\frac{F}{A}$

⇒ P = $\frac{6.4}{0.4}$

⇒ P = 16 $\frac{lb}{in^{2} }$

This is the pressure inside the cylinder.

Let force applied on the brake pad = $F_{1}$

Area of the brake pad ( $A_{1}$ )= 1.7 $in^{2}$

Thus the pressure on the brake pad ( $P_{1}$ ) = $\frac{F_{1} }{A_{1} }$

When brake is applied on the vehicle the pressure on the piston is equal to pressure on the brake pad.

⇒ P = $P_{1}$

⇒ 16 = $\frac{F_{1} }{A_{1} }$

⇒ $F_{1}$ = 16 × $A_{1}$

Put the value of $A_{1}$ we get

⇒ $F_{1}$ = 16 × 1.7

⇒ $F_{1}$ = 27.2 lb

This the total force applied during braking.

The force applied on one wheel = $\frac{F_{1} }{4}$ = $\frac{27.2}{4}$ = 6.8 lb

⇒ The force applied on one wheel during braking.

7 0

3 years ago

Which of the following is an example of potential energy?

Papessa [141]

Answer:

Explanation:

potential energy is stored energy so the ball has potential energy to bounce or roll which would then have been converted to kinetic but the rest are in motion meaning energy is no longer stored but used in motion and therefore cannot be potential energy

4 0

3 years ago

A culture is a group of people that share the same __________.

Nookie1986 [14]

Hi!

Although all of them might be a good answer the correct has to be <span>C. beliefs and behaviors </span>

8 0

3 years ago

Read 2 more answers

The fact that large elliptical galaxies are much more common in the central regions of galaxy clusters than elsewhere in the uni

Alenkinab [10]

The fact that large elliptical galaxies are more common in central galaxy clusters suggests that collisions play a role in the formation of these galaxies.

<h3>What is galaxy formation?</h3>

Galaxy formation is a physical phenomenon where molecular clouds of dust concentrate and thus first generate stars.

Galaxy formation is a process that can be associated with collisions, at least for the formation of elliptical galaxies.

Collisions are a relatively frequent process in clusters (groups) of galaxies that are formed by crashes with other galaxies.

Learn more about galaxy formation here:

brainly.com/question/7348850

6 0

3 years ago

The force from the athlete pushing backwards on the starting blocks is

lara [203]

Explanation:

It's Muscular Force friend

hope it helps you

please mark it as brainlist

4 0

3 years ago