If a car accelerates at a uniform 4.0 m/s2, how long will it take to reach a speed of 80 km/hr, starting from rest?
What will be an ideal response?
5.6 s
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In the Drude model of electrical conduction, the current density is directly proportional to
a. the average time interval between successive collisions. b. the number of charge carriers per unit volume. c. the square of the electron charge. d. the electric field present in the wire. e. the product of all four quantities listed above.
The temperature is observed to decrease from
to 
during the evening of a very hot day. What is the relative change in the speed of sound over this time interval?
A. -15% B. -28% C. -1.5% D. -3%
A mass suspended from a spring moves with the greatest velocity
A. at the end points of its motion B. at the equilibrium position C. midway between the end point of its motion and the equilibrium position
The energy of a photon is related to
A) the energy given to the atom that emits it. B) the energy transition in de-excitation. C) its frequency. D) all of the above E) none of the above