Which spectral type represents stars with the hottest surface temperatures?
A) G
B) M
C) O
D) A
E) B
C) O
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A substance with a high thermal inertia has a high
A) temperature, in many cases. B) heat conductivity. C) specific heat capacity. D) energy content.
A bucket of water with total mass 30 kg is attached to a rope, which in turn is wound around a 0.050 m radius cylinder at the top of a well. A crank with a turning radius of 0.25 m is attached to the end of the cylinder and the moment of inertia of cylinder and crank is 0.12 kg×m2 . If the bucket is raised to the top of the well and released, what is the acceleration of the bucket as it falls
toward the bottom of the well? (Assume rope's mass is negligible, that cylinder turns on frictionless bearings and that g = 9.8 m/s2.) a. 3.2 m/s2 c. 7.4 m/s2 b. 3.8 m/s2 d. 9.8 m/s2
A wave has an amplitude 20.0 cm, a wavelength 3.00 m, and the wave travels 60.0 m in 12.0 s. What is the frequency of the wave?
A) 8.33 Hz B) 250 Hz C) 0.500 Hz D) 1.67 Hz E) 150 Hz
The energy used by a 100 watt light bulb in 1 hour is 360,000 joules
Indicate whether the statement is true or false