The answer is b. According to the law of conservation of energy, energy can never be created nor destroyed, only transferred from one form to another.
Answer:
As temperature increases, a substance will change from solid, to liquid, to gas. The particle theory states that the particles of a substance spread out as they gain energy when heated. Thus, the particles take up more space, which means that the density of the substance decreases.
Explanation:
Correct position spring hold it
Answer:
a) v = 34.5 mph, b) v = 50 mph
Explanation:
The average speed is defined.
v = (x₂ -x₁) / (t₂ -t₁)
If the movement is with uniform speed we can also obtain the average speed, averaging the speeds with a time weight factor, if the time is equal for each speed
v = (v₁ + v₂) / 2
a) For the outward journey
v = (69.0 +0) / 2
v = 34.5 mph
b) For the return trip
v = (69.0 + 31.0) / 2
v = 50 mph
As long as the magnet is moving ...
... there is voltage between the ends of the wire in the coil, and
... if there is any kind of conductor between the ends, then there is current flowing through the coil.