A car travelled the first third of a distance d at a speed of 1 m/s, the second third at a speed of 2 m/s and the last third at a speed of 6 m/s. Determine the average speed of
the car.

Avery long solenoid of inner radius 2.75 cm creates an oscillating magnetic field of the form = for this solenoid, =0.00425 t and =319 rad/s. (a)what is the maximum value of the induced electric field at a perpendicular distance 1.45 cm from the axis of the solenoid? (b) what is the maximum value of the inducted electric field at a point 5.85 cm perpendicular from the axis of the solenoid?

What was the first instrument to ever record an earthquake?

This is the number of complete movements of a wave per second.