Suppose that a car traveling to the east (+x direction) begins to slow down as it approaches a traffic light. Which statement concerning its acceleration must be correct?
A) Its acceleration is in the +x direction.
B) Its acceleration is in the -x direction.
C) Its acceleration is zero.
D) Its acceleration is decreasing in magnitude as the car slows down.
B
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________ and ________ are common in regions where subduction occurs.
A. Volcanoes; plate spreading B. Auroras; the Coriolis effect C. Mountains; earthquakes D. Rifts; polarity shifts
When a charged particle is moved along an electric field line,
A. the electric field does no work on the charge. B. the electrical potential energy of the charge does not change. C. the electrical potential energy of the charge undergoes the maximum change in magnitude. D. the voltage changes, but there is no change in electrical potential energy. E. the electrical potential energy undergoes the maximum change, but there is no change in voltage.
Diffraction Gratings: An 18-mm-wide diffraction grating has rulings of 710 lines per millimieter. Monochromatic light of wavelength 506 nm wavelength is incident normally on the grating. What is the largest angle from the centerline at which an intensity maximum is formed?
A. 46° B. 44° C. 42° D. 40° E. 38°
A mass of 0.150 kg is attached to a spring with a force constant of 3.58 N/m and undergoes simple harmonic oscillations with an amplitude of 7.50 cm. What is the total mechanical energy of the system?
A) 0.0201 J B) 0.0101 J C) 0.269 J D) 0.134 J E) 0 J