Thermal-energy flow between objects is conserved and always flows from the warmer object to the cooler object.
Here 'conserved' means that the amount of thermal energy lost of by one body is exactly equal to the amount of thermal energy gained by another body, which is the statement of the first law.
According to second law, we do not see objects warming up on their own. For example, if we have a cup of coffee left to itself, we would always see that it cools down. Here, thermal energy is being transferred from warmer object (coffee) to cooler objects (the air in the room).
Answer:
W = 7000 J
Explanation:
To solve this problem we use that the speed of the bicycle is constant, therefore its acceleration is zero
F -fr = 0
F = fr
where F is the force applied by the child
Work is defined by
W = F. x
W = F x cos θ
in this case the child's force is parallel to the movement, therefore the angle is zero and cos 0 = 1
let's calculate
W = 35 200
W = 7000 J
The answer is C: West to the East
Athens was known for its love of pottery , the sculptures , and architecture
I hope that's help !
Answer:
47 kg
Explanation:
Momentum = 2209 kg * m/s
velocity = 47 m/s
Mass (m) = ?
We know that momentum is the product of mass and velocity so
Momentum = mass * velocity
2209 = mass * 47
mass = 2209 / 47
mass = 47 kg
Hope it will help :)❤