Who discovered the electron in 1897?
a. Ernest Rutherford
b. James Chadwick
c. J. J. Thomson
d. Niels Bohr
c
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Give examples of four quantities which are vectors
What will be an ideal response?
Two fireworks explode at the same position on the 4th of July. A stationary observer notices that the time interval between the two events was 5.00 seconds. A second observer flies past the fireworks at a speed of 0.600 c. What value does she obtain when she measures the time interval between the two explosions?
a. 8.33 s b. 6.25 s c. 4.00 s d. 3.00 s e. 5.00 s
According to Lenz's law, the induced current in a circuit always flows to oppose the external magnetic field through the circuit
A) True B) False
Rank the electric potentials at the four points shown in Figure OQ25.7 from largest to smallest