If a is acceleration, v is velocity, x is position, and t is time, then which equation is not dimensionally correct?
a. t = x/v
b. a = v2/x
c. v = a/t
d. t2 = 2x/a
c
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Thermoset polymers _________be melted for processing or recycling.
Fill in the blank(s) with the appropriate word(s).
During a total lunar eclipse, which of the following are true? I. The photosphere of the Sun is obscured by the Moon. II. The Moon is in Earth's umbra. III. The Moon is new. IV. The Moon is full
a. I, III b. II, IV c. I, II, III d. II, III e. I, II, III, IV
This graph shows the frequency of impacts on Earth by objects of various sizes. According to this graph, objects large enough to cause a mass extinction hit Earth
A) about once every 50 million years. B) about once every 1,000 years. C) about once in Earth's history. D) about once every 500 million years.
A physicist claims that she has found a new particle with a mass 200,000 times the mass of the proton (1.67 × 10^?27 kg) and a charge of 3.20 × 10^?19 C. If she is correct, such a particle traveling in a circle in a uniform 5.00-T magnetic field at a velocity of 2 500 m/s will have a radius of
a. 0.261 m. b. 0.522 m. c. 1.04 m. d. 3.27 m. e. 3.13 × 10^26 m.