Based on current scientific evidence, what is the likelihood that life on Earth formed spontaneously from increasingly complex chemical reactions?
A) very likely
B) certain
C) impossible
D) very unlikely
A
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A spaceship is moving past us at a speed close to the speed of light. If we could measure the mass of the spaceship as it goes by, what would it be?
A) Its mass is infinite. B) Its mass is greater than its rest mass. C) Its mass is the same as its rest mass. D) Its mass is less than its rest mass.
What is the amount of energy emitted in the form of neutrinos, during a supernova explosion, compared to the amount of energy radiated as electromagnetic radiation?
A) only .007 as much B) about equal amounts C) about twice as much D) ten times more E) 100 times more
An extremely long thin wire carries a uniform linear charge density of 358 nC/m. Find the potential difference between points 5.0 m and 6.0 m from the wire, provided they are not near either end of the wire
(k = 1/4??0 = 8.99 × 109 N • m2/C2 ) A) 1.2 kV B) 6.0 kV C) 0.21 kV D) 0.215 kV
A proton in a certain particle accelerator has a kinetic energy that is equal to its rest energy. What is the momentum of the proton as measured by a physicist working with the accelerator? (c = 3.00 × 108 m/s, mproton = 1.67 × 10-27 kg)
A) 2.51 × 10-19 kg ? m/s B) 2.89 × 10-19 kg ? m/s C) 4.34 × 10-19 kg ? m/s D) 5.01 × 10-19 kg ? m/s E) 8.68 × 10-19 kg ? m/s