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2 years ago

Which of the following statements best describes the movement of particles in a liquid?

Physics

2 answers:

Vesna [10]2 years ago

5 0

Answer:

The particles in a liquid are close together but move past each other

Explanation:

Rufina [12.5K]2 years ago

5 0

Answer:

The partials are far apart but moving fast

Explanation:

g o o g l e

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A raindrop of radius r falls from a certain height h above the ground. The work done by

lisabon 2012 [21]

Answer:

fhc

Explanation:

chchfufuufufyfydyedhxhfud wyruficjc

5 0

3 years ago

A ball is dropped from rest at point O. After falling for some time, it passes by a window of height 3.3 m and it does so in 0.2

stiv31 [10]

Answer:

Speed at which the ball passes the window’s top = 10.89 m/s

Explanation:

Height of window = 3.3 m

Time took to cover window = 0.27 s

Initial velocity, u = 0m/s

We have equation of motion s = ut + 0.5at²

For the top of window (position A)

$s_A=0\times t_A+0.5\times 9.81t_A^2\\\\s_A=4.905t_A^2$

For the bottom of window (position B)

$s_B=0\times t_B+0.5\times 9.81t_B^2\\\\s_A=4.905t_B^2$

$\texttt{Height of window=}s_B-s_A=3.3\\\\4.905t_B^2-4.905t_A^2=3.3\\\\t_B^2-t_A^2=0.673$

We also have

$t_B-t_A=0.27$

Solving

$t_B=0.27+t_A\\\\(0.27+t_A)^2-t_A^2=0.673\\\\t_A^2+0.54t_A+0.0729-t_A^2=0.673\\\\t_A=1.11s\\\\t_B=0.27+1.11=1.38s$

So after 1.11 seconds ball reaches at top of window,

We have equation of motion v = u + at

$v_A=0+9.81\times 1.11=10.89m/s$

Speed at which the ball passes the window’s top = 10.89 m/s

7 0

3 years ago

A sample of oxygen gas occupies a volume of 5.0L at 90kPa pressure. What volume will it occupy at 145kPa?

Burka [1]

Answer:

<h3>The answer is option A</h3>

Explanation:

The new volume can be found by using the formula for Boyle's law which is

$P_1V_1 = P_2V_2$

Since we are finding the new volume

$V_2 = \frac{P_1V_1}{P_2} \\$

From the question we have

$V_2 = \frac{5 \times 90000}{145000} = \frac{450000}{145000} = \frac{450}{145} \\ = 3.103448...$

We have the final answer as

Hope this helps you

7 0

3 years ago

The gravitational force between two objects is 1600 N. What will be the gravitational force between the objects if the distance

Luden [163]

The gravitational force is inversely proportional to squared distance.
This means when the distance between the objects is increased, the gravitational force reduces.

1600 = k/d². where k is constant.
k=1600d²

When d is doubled, the gravitational force, F,

F = 1600d²/(2d)²
F = 400 N

4 0

2 years ago

Match the choices below to the correct description. Drag the terms on the left to the appropriate blanks on the right. ResetHelp

Andreas93 [3]

Answer: hello the terms are missing but I have provided the answer ( the terms and matched them properly

answer :

P WAVES
S WAVES
L WAVES
R WAVES

Explanation:

This body wave is a compressional wave : P WAVES

This body wave is a shear wave : S WAVES

This surface wave moves from side to side : L WAVES

This surface wave moves up and down. : R WAVES

A body wave is a type of wave that passes through the interior of the earth and they are classified as ; P and S waves while surface waves are seismic waves that travel near the earth's surface

5 0

3 years ago