All categories

4 years ago

Describe what happens at the molecular level during melting

Physics

1 answer:

Strike441 [17]4 years ago

5 0

The molecules of a solid vibrate faster so that they spread out to become a liquid hope this helps

You might be interested in

Why is pure oxygen stored as a liquid under pressure

yKpoI14uk [10]

<h2>Answer: It is highly flammable.</h2>

Explanation:

Liquid oxygen is created from oxygen atoms that have been forced to assume the liquid state due to compression (change of pressure) and temperature modification.

Specifically this is achieved by cooling the oxygen enough to change it to its liquid state. So, as the temperature drops, the atoms move more slowly because they have less energy.

In this sense, in the liquid state it is easier to store and mobilize oxygen, taking into account that it is a highly flammable gas.

3 0

3 years ago

you spray your sister with water from a garden hose. the water is supplied to the hose at a rate of 0.649x10-3 m^3/s and the dia

Ivanshal [37]

Answer:

27.82 m/s

Explanation:

The radius of the hose is half of its diameter

$r = d/2 = 5.45\times10^{-3}/2 = 0.002725 m$

So its area must be

$A = \pi r^2 = \pi 0.002725^2 = 2.33\times10^{-5} m^2$

The speed of water coming out of the hose is its flow rate divided by the cross-section area of the hose

$v = \dot{V}/A =0.000649 / 2.33\times10^{-5} = 27.82 m/s$

7 0

3 years ago

Pls help I give brainliest: What is physical weathering?

-Dominant- [34]

Answer:

B:The breakdown of rocks into smaller rocks

Explanation:

Physical weathering is breaking down rocks, but it doesn't change what the rock is made out of.

8 0

2 years ago

A wave on the ocean surface with wavelength 44 m travels east at a speed of 18 m/s relative to the ocean floor. If, on this stre

inessss [21]

Answer:

A)t=1.375s

B)t=11s

Explanation:

for this problem we will assume that the east is positive while the west is negative, what we must do is find the relative speed between the wave and the powerboat, and then with the distance find the time for each case

ecuations

V=Vw-Vp (1)

V= relative speed

Vw= speed of wave

Vp=Speesd

t=X/V(2)

t=time

x=distance=44m

A) the powerboat moves to west

V=18-(-14)=32m/s

t=44/32=1.375s

B)the powerboat moves to east

V=18-14=4

t=44/4=11s

3 0

3 years ago

The picture below shows a science model made with a balloon, cord, and radiosonde.

alexandr402 [8]

Answer:

Since the person above didn't answer correctly I will, the correct option is (D) this is because the picture shown is of a weather balloon and the purpose of this device is to predict weather and its conditions

Hope this helped! (: Have a nice day

4 0

3 years ago