3 years ago

Please help me it’s emergency please I will mark you as the best

1 answer:

8 0

Answer: When you drop something in general down a tube the air is drawn up ward and is pushes the paper up but, at the same time gravity is taking it's affect by pushing the paper down .And as for the coin its to heavy so the little bit of air being forced up doesn't affect the coin so the only thing that is affecting the coin is gravity

Sorry tried explaining as best as I could hope it helped

You might be interested in

To do your homework correctly you should (5 points)

pychu [463]

Answer:

C according to me

Explanation:

ITS HARD

4 0

3 years ago

Read 2 more answers

Hey can yall help me out in dis

Karolina [17]

Answer:

Scientific method

Explanation:

5 0

3 years ago

In the equation for centripetal force, which expression represents the centripetal acceleration of the object? mv2 StartFraction

Sphinxa [80]

Answer: $\frac{V^{2}}{r}$

Explanation:

According to Newton's 2nd Law of motion the force $F$ is proportional to the mass $Fm$ and acceleration $a$ :

$F=m.a$ (1)

On the other hand, the equation for the Centripetal force is:

$F=\frac{mV^{2}}{r}$ (2)

Where:

$V$ is the velocity

$r$ is the radius of the circular motion

Making (1) and (2) equal:

$m.a=\frac{mV^{2}}{r}$ (3)

Hence:

$a=\frac{V^{2}}{r}$ This is the expression for the centripetal acceleration

It should be noted, this acceleration is directed toward the center of the circumference of the circular motion (that's why it's called centripetal acceleration).

3 0

3 years ago

Read 2 more answers

Why do birds not get shock when they<br>sit on high power live wire but we do?<br>

Marina86 [1]

Answer:

Their bodies don't conduct electricity like we do.

Explanation:

6 0

3 years ago

Read 2 more answers

A 1.120 kg car is traveling with a speed of 40 m/s. find its energy