Which of the following substances has the greatest specific heat?
a. copper
b. ice
c. water
d. steam
e. Ice, water, and steam have equal specific heats since they are the same material, and this specific heat is greater than that of copper.
c
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What is conserved when a photon collides with an electron?
A) momentum B) energy C) both of these D) neither of these
A thin converging lens is found to form an image of a distant building 24 cm from the lens. If an insect is now placed 16 cm from this lens, how far FROM THE INSECT will its image be formed?
A) 96 cm B) 32 cm C) 48 cm D) 64 cm E) 72 cm
The infinite, open universe has a geometry compared to the surface of a(n) ________
Fill in the blank(s) with correct word
A baseball pitcher loosens up his pitching arm. He tosses a 0.20-kg ball using only the rotation of his forearm, 0.28 m in length, to accelerate the ball. What is the moment of inertia of the ball alone as it moves in a circular arc with a radius of 0.28 m?
a. 3.1E–3 kg·m2 b. 1.6E–2 kg·m2 c. 3.1E–2 kg·m2 d. 1.1E–2 kg·m2 e. 5.6E–2 kg·m2