Which of the following is a form of mechanical energy?
1 answer:
You might be interested in
Answer:
Surely Achilles will catch the Tortoise, in 400 seconds
Explanation:
The problem itself reduces the interval of time many times, almost reaching zero. However, if we assume the interval constant, then it is clear that in two hours Achilles already has surpassed the Tortoise (20 miles while the Tortoise only 3).
To calculate the time, we use kinematic expression for constant speed:
The moment that Achilles catch the tortoise is found by setting the same final position for both (and same time as well, since both start at the same time):
Answer:
<h2>0.094 kg</h2>Explanation:
Latent heat of vaporization of at 37°C is
.
When the sweat on our body evaporates, it absorbs energy from our body to overcome it's Latent heat of vaporisation. Thus our body cools down when sweat evaporates.
So, Energy absorbed by sweat to evaporate = Energy lost by body
Specific heat capacity of human body = . Jogger weights 60.4 kg. Body temperature decreases by
Energy absorbed from body =
∴ 0.094 kg of sweat has evaporated from the body.