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KIM [24]
3 years ago
7

Why does ice change into water on heating ? ​

Physics
2 answers:
oksano4ka [1.4K]3 years ago
6 0

Answer:

Explanation:

Changing states of matter and energy

A block of ice is solid water. When heat (a form of energy) is added, the ice melts into liquid water. If heat is removed from water vapour, the gas cools down and it condenses back into liquid water. Continue to cool the water (by removing heat), and it becomes solid ice.

plz mark as brainliest

pickupchik [31]3 years ago
5 0

<h3>Please mark me as Brainliest ....... </h3>

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An automobile has a mass of 1200 kg. what is its kinetic energy, in kj, relative to the road when traveling at a velocity of 50
snow_lady [41]
One thing you should notice. It is kind of weird. Ke has no direction so that fact that it has velocities associated with it does not matter. It becomes a scaler (something measured by amount alone).

General Formula
Ke = 1/2 m v^2
Formula for this problem
Ke = 1/2 m (v2)^2 - 1/2 m (v1)^2

Givens
m = 1200 kg
v2 = 100 km/hr = 100 km/h * [1 hour / 3600 sec] * [1000 m/ 1km] = 27.8 m/s
v1 = 50 km / hr = 13.9 m/s

Substitution and work.
================
delta Ke = 1/2 1200 (27.8)^2 - 1/2 1200 (13.9)^2
delta Ke = 463704 - 115926
delta Ke = 34778 Joules
delta Ke = 34.8 kJ

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5 0
3 years ago
Which of these would have the greatest pressure?
PIT_PIT [208]
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Hope this helps
8 0
3 years ago
A positive test charge q is released from rest at distance r away from a charge of +Q and a distance 2r away from a charge of +2
Svetradugi [14.3K]

Answer:

B. to the right

Explanation:

Given:

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F_1=k.\frac{Q.q}{r^2}

<u>Force on the test charge due to +Q:</u>

F_2=k.\frac{2Q.q}{(2r)^2}

F_2=k.\frac{Q.q}{2r^2}

Since all the charges are positive here, so they will try to repel the test charge away. And the force due to charge +Q will be greater so initially the test charge will move rightwards away from the +Q charge.

3 0
3 years ago
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Julli [10]

Answer:

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So, the linear velocity of the club head (Lv) is:

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8 0
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