A satellite with a rest mass of 200 kg and a speed of 0.800c and a second satellite with a rest mass of 100 kg and a speed of 0.600c are traveling toward each other in deep space.
The satellites collide and somehow manage to stick together. What is the rest mass of the combined object after the collision?
A) 300 kg
B) 389 kg
C) 416 kg
D) 457 kg
E) 587 kg
Question 2
Two radio antennas are 130 m apart on a north-south line. The two antennas radiate in phase at a frequency of 3.6 MHz. All radio measurements are made far from the antennas.
What is the smallest angle, reckoned east of north from midway between the antennas, at which constructive interference of two radio waves occurs? (c = 3.00 108 m/s) A) 50
B) 55
C) 45
D) 40
E) 35
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