Car A is traveling at twice the speed of car B. They both hit the brakes at the same time and undergo identical decelerations. How does the time required for car A to stop compare with that for car B?
What will be an ideal response?
Car A takes twice as long to stop.
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A charged capacitor is connected to an ideal inductor. At time t = 0, the charge on the capacitor is equal to 6.00 ?C. At time t = 2.00 ms the charge on the capacitor is zero for the first time. What is the amplitude of the current at that same instant?
A) 2.38 mA B) 4.71 mA C) 0.780 mA D) 1.53 mA E) 1.19 mA
Alphonse moves eastward in a car at 30 m/s. Velma, moving eastward in a train at 70 m/s, passes him. Alphonse's velocity relative to Velma is
A) 40 m/s westward. B) 100 m/s eastward. C) 40 m/s eastward. D) 30 m/s westward. E) 100 m/s westward.
Increasing the aperture on a camera
A. reduces the depth of field and requires a longer exposure time. B. reduces the depth of field and requires a shorter exposure time. C. increases the depth of field and requires a longer exposure time. D. increases the depth of field and requires a shorter exposure time.
While an iron block near the Earth's surface is in free fall downward, it undergoes an increase in
A) Speed B) Acceleration C) Both of these D) Neither of these