Because the object hovering over the magnet is the same magnetic pole.
Answer:
it can melt orcan put them past their boiling point
Explanation:
Answer:
A wave with a frequency of 60 hertz will have 60 successive wave crests occurring every second
Explanation:
A crest is the highest point the medium rises to in a wave. That means that the crest is a point on the wave where the displacement is at a maximum.
Frequency is the number of oscillations of a wave in one second. Hence, frequency of a wave is the number of successive crests occurring in a second.
Therefore a wave with a frequency of 60 hertz will have 60 successive wave crests occurring every second.
Answer:
a) Her average speed was 0.778 km/min
b) Her average velocity was 0.572 km/min
Explanation:
a) The average speed is given by the traveled distance over time:
average speed = distance / time
average speed = 14.0 km / 18.0 min = 0.778 km/min
b) The average velocity is given by the displacement over time. It is calculated as the variation of the position over time relative to the frame of reference. In this case, the origin of the frame of reference is located at the home of the student. The final position will be the university. Then:
velocity = (final position - initial position)/ time
velocity = 10.3 km / 18.0 min = 0.572 km/min