Answer:
A velocity of
Explanation:
Since the magnitude of the vector is equal to the magnitude of velocity, velocity of the 2 cm vector represents a velocity of $10\times 2= 20 \: km/h$.
Kinetic energy is energy in motion and potential energy is stored energy
Answer:
yes
Explanation:
The metal is closer than 20 cm to the magnet which is in the magnetic field.
30 grams because of conservation
1 watt = 1 joule per sec
11,000 Watts = 11,000 joules per sec
The frequency doesn't matter.