The radius of the moon's orbit is about ____ times larger than the radius of Earth
a. 0.6
b. 6
c. 60
d. 600
e. 6000
C
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Venus can be seen during daytime when it is near greatest brilliancy
Indicate whether the statement is true or false
An electric motor and electric generator differ in
A) the roles of input and output. B) basic construction. C) size. D) quality.
How much thermal energy must be removed from 456 g of water at 25.0°C to change it into ice at -10.0°C?
The specific heat of ice is 2090 J/kg ? K, the latent heat of fusion of water is 33.5 × 104 J/kg, and the specific heat of water is 4186 J/kg ? K. A) 105 kJ B) 153 kJ C) 57.3 kJ D) 47.7 kJ E) 210 kJ
A small sphere attached to a light rigid rod rotates about an axis perpendicular to and fixed to the other end of the rod. Relative to the positive direction of the axis of rotation, the angular positions of the sphere are positive, its angular velocity is positive, and its angular acceleration is negative. The sphere is
a. rotating clockwise and slowing down. b. rotating counterclockwise and slowing down. c. rotating clockwise and speeding up. d. rotating counterclockwise and speeding up. e. first rotating clockwise and then counterclockwise.