An unstable particle is moving at a speed of 2.6 × 108 m/s relative to a laboratory. Its lifetime is measured by a stationary observer in the laboratory to be 4.7 × 10-6 seconds
What is the lifetime of the particle, measured in the rest frame of the particle? (c = 3.00 × 108 m/s)
2.3 µs
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A heater is rated at 1200 watts for a 120-volt source.If two heaters are connected in parallel across the 120-volt source, the total power drawn from the source increases to 2400 watts
a. True b. False Indicate whether the statement is true or false
Where is most of the water on Mars?
A) in its clouds B) in its polar caps and subsurface ground ice C) frozen on the peaks of its tall volcanoes D) in deep underground deposits E) distributed evenly throughout its atmosphere
If a future orbiter mission confirmed the existence of a subsurface oceans beneath Europa's icy surface, the next mission would most likely be
A) another orbiter B) a lander C) a flyby D) a sample return mission
Two identical objects A and B fall from rest from different heights to the ground and feel no appreciable air resistance. If object B takes TWICE as long as object A to reach the ground, what is the ratio of the heights from which A and B fell?
A) hA/hB = 1/ B) hA/hB = 1/2 C) hA/hB = 1/4 D) hA/hB = 1/8