S MECHANICS
EXPERIMENT01: MEASUREMENTS
You are provided with vernier calipers, micrometer screw gauge, test tube,
metre rule and stop watch. Use the calipers to measure the external diameter "D" and
the internal diameter "D" of the tube, the depth 'h of the tube. Use the screw gauge to
measure the thickness 'x' of the ruler and the breadth 'b' of the ruler. Use the stop
watch to find the total time ts, taken to complete 50 oscillations, and hence evaluate
the periodic time 'T' of the pendulum oflength 1 = 50cm.
Repeat all the processes above six more times. Record your observations as shown.

An charge with mass m and charge q is emitted from the origin, (x, y)=(0,0). a large, flat screen is located at x=l. there is a target on the screen at y position y(h), where y(h) > 0. in this problem, you will examine two different ways that the charge might hit the target. ignore gravity in this problem. 1.assume that the charge is emitted with velocity v(0) in the positive x direction. between the origin and the screen, the charge travels through a constant electric field pointing in the positive y direction. what should the magnitude e of the electric field be if the charge is to hit the target on the screen? express your answer in terms of m, q, y(h), v(0), and l. 2.now assume that the charge is emitted with velocity v(0) in the positive y direction. between the origin and the screen, the charge travels through a constant electric field pointing in the positive x direction. what should the magnitude e of the electric field be if the charge is to hit the target on the screen? express your answer in terms of m, q, y(h), v(0), and l.

The energy equivalent of the rest mass of an electron is

See the attachment and solve question 5th