"Local observations made in an accelerated frame of reference cannot be distinguished from observations made in a gravitational field" is known as the principle of
A) equivalence.
B) equality.
C) equanimity.
D) interchangeability.
Answer: A
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A "gamma" ray is
A. an electron. B. a helium nucleus. C. two electrons bound to two neutrons. D. electromagnetic radiation.
Rotational Dynamics: 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 8.13 rad/s?
A. 3.33 s B. 2.83 s C. 4.03 s D. 4.36 s
Molecules are
A. subdivisions of atoms B. several atoms bound together C. the same as electrons D. the same as nuclei
Two springs, each with spring constant 33.0 N/m, are connected in parallel, and the combination is hung vertically from one end. A 18.0-N weight is then suspended from the other end of the combined spring. How far does the combined spring stretch as it comes to equilibrium?
a. 0.545 m b. 0.136 m c. 1.09 m d. 0.273 m e. 2.18 m