An 800-g block of ice at 0.00°C is resting in a large bath of water at 0.00°C insulated from the environment. After an entropy change of this system of 600 J/K, how much ice remains unmelted? The latent heat of fusion of water is 333 J/g
A)
579 g
B)
492 g
C)
764 g
D)
308 g
E)
221 g
D
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Mount Saint Helens is the type of volcano known as a(n) ______________
Fill in the blank(s) with correct word
A long straight wire is parallel to one edge and is in the plane of a single-turn rectangular loop as shown. If the loop is changing width so that the distance x changes at a constant rate of 4.0 cm/s, what is the magnitude of the emf induced in the loop at an instant when x = 6.0 cm? Let a = 2.0 cm, b = 1.2 m, and I = 30 A
a.
5.3 ?V
b.
2.4 ?V
c.
4.8 ?V
d.
2.6 ?V
e.
1.3 ?V
Our Sun is made of about 28% helium (by mass). Where did this helium come from?
A) Fusion in stars B) The Big Bang only C) Mostly from fusion in stars with a small contribution from the Big Bang D) Mostly from the Big Bang with a small contribution from fusion in stars E) Radioactive decay of heavier elements only
Which part of the electromagnetic spectrum has the lowest frequency?
A) ultraviolet B) infrared C) gamma D) visible E) radio