A common scale for denoting a mineral's hardness is the
a. Ores scale.
b. Mohs scale.
c. Homs scale.
d. Ohms scale.
b
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A ray of light passes from glass into a liquid, as shown in the figure. What is the speed of the light in the liquid? (c = 3.00 × 108 m/s)
What will be an ideal response?
A solid disk and a hoop have different diameters but identical masses. Which one has a larger rotational inertia?
A. The hoop B. The solid disk C. It is impossible to know without knowing the diameters D. It is impossible to know without knowing the torques acting on the two objects
The modern first astronomer to propose a heliocentric model for the solar system was ____________________
Fill in the blank(s) with correct word
As an object moves from point A to point B only two forces act on it: one force is nonconservative and does ?30 J of work, the other force is conservative and does +50 J of work. Between A and B, a. the kinetic energy of object increases, mechanical energy decreases
b. the kinetic energy of object decreases, mechanical energy decreases. c. the kinetic energy of object decreases, mechanical energy increases. d. the kinetic energy of object increases, mechanical energy increases. e. None of the above.