Two blocks of mass m1 and m2 are connected by strings and pulled with constant acceleration a. What is the relationship between
A. T1 > T2
B. T1 < T2
C. T1 = T2
D. T1 = T2 = 0
Since block m2 is accelerating, it must have a net force on it. That eliminates choices C and D. If T1 was greater than T2, that would imply the net force on m2 would be backwards, which doesn’t make sense.
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A solid insulating sphere of radius 5 cm carries electric charge uniformly distributed throughout its volume. Concentric with the sphere is a conducting spherical shell with no net charge as shown in Figure OQ24.9. The inner radius of the shell is 10 cm, and the outer radius is 15 cm. No other charges are nearby. Rank the magnitude of the electric field at points A (at radius 4 cm), B (radius 8
cm), C (radius 12 cm), and D (radius 16 cm) from largest to smallest. Display any cases of equality in your ranking.
Which of the following phenomena is not associated with light retardation?
Explain how energy is generated inside a planet and how it is transported out of a planet
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A heater is rated at 1200 watts for a 120-volt source.The current in amperes drawn by the heater is
a. 0.1 b. 10. c. 144,000 d. none of the above.