Earth's rotation causes a person at the North Pole to ________ relative to the center of the Earth.
A) move at a speed of about 1670 km/hr
B) spin in place once each year
C) remain completely stationary
D) spin in place once each day
D) spin in place once each day
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A C note (f = 256 Hz) is sounded on a piano. If the length of the piano wire is 1.8 m and its mass density is 2.2 g/m, what is the tension in the wire?
a. 6.4E+1 N b. 1.4E+2 N c. 1.9E+3 N d. 1.1E+3 N e. 5.6E+2 N
Of the following systems, which contains the most heat?
a. 100 kg of water at 80°C c. 600 kg of ice at 0°C b. 250 kg of water at 40°C d. Systems do not contain heat.
Max von Laue is known for his work with
A. double-slit interference. B. single-slit diffraction. C. x-ray crystallography. D. holography. E. magnetic resonance imaging.
A 340-g air track cart traveling at 1.25 m/s suddenly collides elastically with a stationary 300-g cart. What is the speed of the 300-g cart just after the collision?
A) 0.0781 m/s B) 1.33 m/s C) 0.625 m/s D) 1.25 m/s E) 0.664 m/s