If an object's mass is decreasing while a constant force is applied to the object, the acceleration
A) decreases.
B) increases.
C) remains the same.
Answer: B
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A square loop (length along one side = 20 cm) rotates in a constant magnetic field which has a magnitude of 2.0 T. At an instant when the angle between the field and the normal to the plane of the loop is equal to 20° and increasing at the rate of 10°/s, what is the magnitude of the induced emf in the loop?
A. 13 mV B. 0.27 V C. 4.8 mV D. 14 mV E. 2.2 mV
How does the rotation of Venus' clouds compare to the rotation of its surface?
What will be an ideal response?
For the stem of the total hip replacement we discussed in Section 14.3.3, assume that the hip replacement is to go into a lightweight, frail person, and therefore the weight of the stem is critical. Use the data in Table 14.14 to determine the material with the highest relative merit for this application.
What will be an ideal response?
Coil 1, connected to a 100 ? resistor, sits inside coil 2 . Coil 1 is connected to a source of 60 cycle per second AC current. Which statement about coil 2 is correct?
a. No current will be induced in coil 2. b. DC current (current flow in only one direction) will be induced in coil 2. c. AC current (current flow in alternating directions) will be induced in coil 2. d. DC current will be induced in coil 2, but its direction will depend on the initial direction of flow of current in coil 1. e. Both AC and DC current will be induced in coil 2.