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Gnesinka [82]
4 years ago
7

When the temperature of water increases from room temperature to 90*C the process of heating the water is

Physics
1 answer:
polet [3.4K]4 years ago
8 0
The process is called ENDOTHERMIC
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Question # 40
jenyasd209 [6]

Answer:

Potential Energy = x = m g h

Kinetic energy = 1/2 m v^2

Assuming the mass fall from rest

1/2 m v^2 = m g h

v^2 = 2 g h

So the speed attained is independent of the mass

Also, x / v   does not have the units of mass

So the solution is none of the above.

7 0
3 years ago
Bob is pulling a 30kg filing cabinet with a force of 200N , but the filing cabinet refuses to move. The coefficient of static fr
vredina [299]

Answer:

2.0\cdot 10^2 N

Explanation:

The cabinet does not move: this means that the net force acting on it is zero.

Along the horizontal direction, we have two forces:

- The push exerted by Bob, F = 200 N, forward

- The frictional force, F_f, which acts in the opposite direction (backward)

Since the net force must be zero, we have:

F-F_f = 0

So solving the equation we can find the magnitude of the friction force:

F_f = F = 200 N=2.0 \cdot 10^2 N

7 0
4 years ago
How do narwhals breathe
NNADVOKAT [17]

Answer:

Like all mammals (including whales and dolphins) narwhals need oxygen. ... Fish use their gills to extract oxygen from the water. But narwhals, like us, use their lungs to breathe.

Explanation:

5 0
4 years ago
If a big truck in front of your car begins to turn left, but its right turn signals are flashing, it is most likely that truck d
marissa [1.9K]
Its most likely C. Remember the bigger the vehicle the bigger the area it needs to make a safe turn.
5 0
3 years ago
Read 2 more answers
How can wind put off fire?
kipiarov [429]
♥ If the wind is strong enough it can do so.
♥ By having a strong enough wind you can blow out the fire before the flame can consume any more vapor.
♥ If the wind is fast enough, like a birthday cake candle for example, the wind will burn out.
7 0
3 years ago
Read 2 more answers
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