A particular motor can provide a maximum torque of 110 N ? m. Assuming that all of this torque is used to accelerate a solid, uniform, cylindrical flywheel of mass 10.0 kg and radius 3
00 m, how long will it take for the flywheel to accelerate from rest to A) 3.33 s
B) 2.83 s
C) 4.03 s
D) 4.36 s
A
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One number has three significant figures and another number has four significant figures. If these numbers are added, subtracted, multiplied, or divided, which operation can produce the greatest number of significant figures?
A. the addition B. the subtraction C. the multiplication D. the division E. All the operations result in the same number of significant figures.
Which of the following correctly describes how light will be affected as it tries to escape from the vicinity of a massive object like a black hole?
A) Light doesn't have mass; therefore, it is not affected by gravity. B) The light will be redshifted. C) The light will be blueshifted. D) The visible light will be redshifted, but higher frequencies, such as x-rays and gamma rays, will not be affected.
What is the fundamental reason that Mars, unlike Earth, has become virtually geologically dead?
A) its small size compared to Earth B) its large size compared to Earth C) its farther distance than Earth to the Sun D) its closer distance than Earth to the Sun E) its rapid rotation compared to Earth F) its slow rotation compared to Earth
The speed of light is given by the value of
A.
B.
.C.
.D.
.E.
.