Approximately how fast is a person located at the Earth's equator moving around Earth's axis due to the rotation of the Earth?
A) 17,000 km/hr
B) 1700 km/hr
C) 170 km/hr
D) 17 km/hr
E) not moving at all
B) 1700 km/hr
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Answer the following statement(s) true (T) or false (F)
1. The heat capacity of any energy storage mode with quantized energy levels goes to zero as the temperature T goes to zero. 2. The average x-velocity of molecules in a container of gas at rest is zero. 3. The average molecular speed is zero
The amount of diffraction a telescope creates depends upon:
A) whether the telescope is a refractor or a reflector. B) the wavelength and the diameter of the telescope objective. C) the magnification of the eyepiece. D) the types of glass used in the achromat. E) the transparency of the atmosphere.
Your weight is equal to mg when you are
A) firmly supported on a horizontal surface and in equilibrium. B) in Earth's gravitational field. C) anywhere except in Earth's orbit. D) all of the above
The half-angle of the conical shock wave produced by a supersonic aircraft is 60°. What is the ratio of the speed of the aircraft to the speed of sound?
A) 2.0 B) 1.7 C) 0.87 D) 1.2