When you add heat to ice, its temperature always stays constant
a. True
b. False
Indicate whether the statement is true or false
False
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Approximately how many days does it take for a white dwarf supernova to decline to 10% of its peak brightness?
A) 3 days B) 30 days C) 170 days D) 300 days
According to the law of reflection, the incident ray, reflected ray, and normal between them
A) lie in the same plane. B) may or may not lie in the same plane. C) lie in planes that are perpendicular to one another.
A string that is 0.15 m long and fixed at both ends is vibrating in its n = 5 harmonic. The sound from this string excites a pipe that is long and open at both ends into its second overtone resonance
What is the distance between a node and an adjacent antinode, in the string? The speed of sound in air is 345 m/s. A) 7.5 mm B) 23 mm C) 150 mm D) 30 mm E) 15 mm
A train starts from rest and accelerates uniformly until it has traveled 5.6 km and acquired a forward velocity of The train then moves at a constant velocity of for 420 s. The train then slows down uniformly at until it is brought to a halt
The acceleration during the first 5.6 km of travel is closest to which of the following? A) 0.16 m/s^2 B) 0.14 m/ s^2 C) 0.17 m/ s^2 D) 0.19 m/ s^2 E) 0.20 m/ s^2