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natima [27]
3 years ago
14

Thermal energy transfers throughout the water in the beaker. Describe and explain how this happens?

Physics
1 answer:
ziro4ka [17]3 years ago
7 0
The transfer of heat between the bottom surface of the beaker and water inside it is due to Convection phenomenon. When a fluid, such as air or a liquid, is heated and then travels away from the source, it carries the thermal energy along. ... The fluid above a hot surface expands, becomes less dense, and rises
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which of the following describes water changing from liqyid to solid, please give me a proof for this question please i really n
Fittoniya [83]
The answers A, this is because Ice is originally water and when water goes below it's freezing point it turns into ice
4 0
3 years ago
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A student throws a small rock straight upwards. The rock rises to its highest point and then falls back down. How does the speed
Vladimir [108]

Answer:

we assume that it starts with a velocity of 10m/s. At 2m height above ground level, its velocity decreases at 3m above ground level

for its way down the velocity at 3m on its way down is more than its velocity at 2m on its way down.

Explanation:

A student throws a small rock straight upwards. The rock rises to its highest point and then falls back down. How does the speed of the rock at 2m on the way down compare with its speed at 2m on the way up?

It decreases in speed on its way down and increases in speed on its way down.

it decreases in speed on its way up because the the vertical motion is against the earths gravitational pull on an object to the earth's center

.It increases in speed on his way down because its under the influence of gravity

from newton's equation of motion we can check by

using V^2=u^2+2as

we assume that it starts with a velocity of 10m/s. At 2m height above ground level, its velocity decreases at 3m above ground level

for its way down the velocity at 3m on its way down is more than its velocity at 2m on its way down.

5 0
3 years ago
Free p o i n t s. hurry before admin deletes ;-;
blsea [12.9K]
The answer is 3+5+4 = 10+3 so then you have to add the number to the part of the equation and you will get the answer of five
4 0
2 years ago
A truck hits a brick wall with a force of 120 N. The collision takes 2.0 seconds.
levacccp [35]
Impulse=force*time
impluse=120N*2.0s
impluse=240 Ns
7 0
3 years ago
A hockey puck slides across the ice at a constant velocity. Is the sliding puck in equilibrium? Why or why not?
geniusboy [140]

Answer:

Since the hockey puck is moving at constant velocity

So here we will have

F_{net} = ma

where we have

a = acceleration of the object

m = mass of object

so here since we know that acceleration is defined as rate of change in velocity

so here we will say that

a = \frac{dv}{dt}

a = 0

so we have

F_{net} = 0

so we will say that hockey puck is in equilibrium as there is no net force of it

3 0
3 years ago
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