The density of an object is how much matter it contains. True or False?
2 answers:
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Answer:
ΔT = 1.22*10^-3 °C
Explanation:
First, you calculate the potential energy of the bird when it is at 35 m high. The potential energy is also the mechanical energy of the bird in this case.
m: mass of the bird = 0.75kg
g: gravitational constant = 9.8m/s^2
h: height = 35m
All this energy is given to the water. You use the following formula in order to calculate the change in temperature:
m: mass of the water = 50kg
c: specific heat of water = 4186 J/kg°C
Q is equal to U (potential energy of the bird) because the bird gives all its energy to water. By doing ΔT the subject of the formula you obtain:
hence, the maximum rise in temperature is 0.00122 °C
Answer:
The riders are <u>radially</u> accelerating.
Explanation:
The Ferris wheel is making a circular motion. If it is moving with constant velocity, than the acceleration is
towards the center of the wheel.
So, the riders are subject to a constant and radial acceleration, which is called the centripetal acceleration.