Boiling is the process of evaporation
A) beneath the water surface.
B) at its extreme.
C) that cools instead of warms.
Answer: A
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A cart changes its speed from 90 m/s to 100 m/s in 10 seconds. During this interval its acceleration is
A) zero. B) 1 m/s2. C) 10 m/s2. D) none of the above
A rectangular-shaped patio has a base length equal to (24.5 ± 0.2) m and a height equal to (9.3 ± 0.1) m. What is the area of the patio, including its uncertainty?
a. 228 ± 4 b. 228 ± 2 c. 228 ± 23 d. 228 ± 6
The Roche limit is the
a. distance from the sun within which a planet can not retain an atmosphere. b. minimum mass of an object in the solar system that would be classified as a planet. c. maximum separation distance between the sun and a given planet. d. distance from Earth at which we loose radio communication with a satellite. e. distance from a planet within which a planet can not hold itself together.
A tiny particle with charge + 5.0 ?C is initially moving at 55 m/s. It is then accelerated through a potential difference of 500 V. How much kinetic energy does this particle gain during the period of acceleration?
A) 1.0 × 104 J B) 2.5 × 10-3 J C) 100 J D) 2500 J