Alex performs a lab experiment with a radio-
controlled cart. He measures the speed of the
cart as it accelerates along a straight track. The
following table shows his data.
Time (s) Speed (m/s)
0 0
1 1
2 1.9
3 3
What is the average acceleration of the cart after
3 s?

Which type of current is produced by a wire breaking magnetic field lines and changing the polarity? a. alternating b. direct c. straight d. alternating and direct

What are the applications of electromagnetic waves

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?