If the tension, in figure below
, is 15 N and the magnitude of the acceleration, a, is 3.0 m/s2, what is the mass, m, of the suspended object? Assume that all surfaces and the pulley are frictionless.
?
a.
3.1 kg
b.
2.5 kg
c.
2.8 kg
d.
2.2 kg
e.
3.7 kg
d
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A small car and a large SUV are at a stoplight. The car has a mass equal to half that of the SUV, and the SUV can produce a maximum accelerating force equal to twice that of the car
When the light turns green, both drivers push their accelerators to the floor at the same time. Which vehicle pulls ahead of the other vehicle after a few seconds? A) The car pulls ahead. B) The SUV pulls ahead. C) It is a tie.
A beam of light passes through a polarizer and then an analyzer. In this process, the intensity of the light transmitted is reduced to 10% of the intensity incident on the analyzer
What is the angle between the axes of the polarizer and the analyzer?
1300 rev/min is equivalent to which of the following?
a. 2600 rad/s c. 273 rad/s b. 136 rad/s d. 60 rad/s
You can raise the temperature of an object with
A. microwaves. B. infrared waves. C. ultraviolet rays. D. all of the above. E. only (a) and (b) above.