Answer:
a)
b)
Explanation:
By conservation of the linear momentum:
When the bullet is shot horizontally
When the bullet is shot at 56.0° above the horizontal,
Since on the y-axis ground will absorb the shock, we only make the calculations on the x-axis:
This question is very simple if you really think about it. B isn't correct because kittens can eat dry food. A wouldn't be correct. Also C wouldn't be correct because it doesn't matter if you watch your kitten eat or not so the answer would be D because some kittens prefer dry food and some prefer canned food better. So it's based on how her kitten behaves.
Answer:
2730.304 KJ
Explanation:
How much heat is required to convert 0.8 kg of ice at -35°C into steam at 100 C?
Given that:
mass of ice (m) = 0.8 kg = 800 g
Initial temperature () = -35°C = 238 K
final temperature ()= 100°C = 373 K
Specific heat of ice () = 2.108 J/g.K
Specific heat of water () = 4.18 J/g.K
Latent heat of fusion () = 334 J/g.
Latent heat of vaporization () = 2230 J/g.
Total heat (Q) required to increase the temperature of ice from the initial temperature of 238K to final temperature of 373 K is given by the equation:
Rise in altitude is directly proportional to decrease in pressure
The earth's atmosphere has its own pressure known as atmospheric pressure.The pressure level is highest right at the surface of the earth because the air at this level is supporting the weight of all the air above it. More weight above means a greater downward gravitational force. As we move up through levels of the atmosphere, the air has less air mass above it and gravity isn’t strong enough to pull down a greater number of particles. So the balancing pressure decreases. This is why atmospheric pressure drops as we rise in altitude.
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