A unit of angular diameter could be meters
a. True
b. False
Indicate whether the statement is true or false
False
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Power: How many joules of energy are used by a 1.0-hp motor that runs for 1.0 hour? (1 hp = 746 W)
A. 3.6 kJ B. 2.7 MJ C. 45 kJ D. 4.8 J
Nuclear Binding Energy: The stability of 
C with respect to alpha, beta-plus and beta-minus decay is to be determined. The following atomic masses are known:
A. not subject to alpha, beta-plus or beta-minus decay. B. subject to alpha decay only. C. subject to beta-plus decay only. D. subject to beta-minus decay only. E. subject to beta-plus or beta-minus decay, but not to alpha decay.
The magnetic flux through a loop perpendicular to a uniform magnetic field will change
a. if the loop is replaced by two loops, each of which has half of the area of the original loop. b. if the loop moves at constant velocity while remaining perpendicular to and within the uniform magnetic field. c. if the loop moves at constant velocity in a direction parallel to the axis of the loop while remaining in the uniform magnetic field. d. if the loop is rotated through 180 degrees about an axis through its center and in the plane of the loop. e. in none of the above cases.
A proton moving with a velocity of 4.0 × 104 m/s along the +y-axis enters a magnetic field of 0.20 T directed towards the -x-axis. What is the magnitude of the magnetic force acting on the proton? (e = 1.60 × 10-19 C)
A) 8.0 × 10-15 N B) 1.3 × 10-15 N C) 0 N D) 3.9 × 10-15 N E) 2.6 × 10-15 N