A satellite, initially at rest in deep space, separates into two pieces, which move away from each other. One piece has a rest mass of 190 kg and moves away with a speed 0.280c,
and the second piece moves in the opposite direction with a speed 0.600c. What is the rest mass of the second piece?
A) 88.7 kg B) 68.8 kg C) 79.6 kg D) 52.7 kg E) 73.9 kg
E
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__________ refers to turning motion around a body's axis whereas ___________ refers to motion of a body around a point
Fill in the blank(s) with correct word
The Big Bang produced all the observed helium that we see today.
Answer the following statement true (T) or false (F)
An 80-eV electron impinges upon a potential barrier 100 eV high and 0.20 nm thick
What is the probability the electron will tunnel through the barrier? (1 eV = 1.60 × 10-19 J, mproton = 1.67 × 10-27 kg, h = 1.055 × 10-34 J ? s, h = 6.626 × 10-34 J ? s) A) 0.011% B) 1.1% C) 0.11% D) 1.1 × 10-4 % E) 7.7 × 10-10 %
If the relative mass of a pingpong ball is 1/20 that of a golf ball, how many pingpong balls would you need to equal the mass of two golf balls?
A) 40 B) 20 C) 24 D) 100 E) 6.022 × 1023