Regular satellites orbit both in the prograde and retrograde directions
a. True
b. False
Indicate whether the statement is true or false
False
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A 1.6-kg ball is attached to the end of a 0.40-m string to form a pendulum. This pendulum is released from rest with the string horizontal. At the lowest point of its swing, when it is moving horizontally, the ball collides with a 0.80-kg block initially at rest on a horizontal frictionless surface. The speed of the block just after the collision is 3.0 m/s. What is the speed of the ball just
after the collision? a. 1.7 m/s b. 1.1 m/s c. 1.5 m/s d. 1.3 m/s e. 2.1 m/s
Heat comes from the Sun to Earth by the process of _______.
a. conduction b. radiation c. convection d. all of these, though radiation is greater
The force required to maintain a body at constant velocity in free space is equal to
1) the mass of the body. 2) zero. 3) the weight of the body. 4) the force required to stop it. 5) none of these. This is in accordance with the law of 6) inertia. 7) action/reaction. 8) gravitation. 9) energy conservation.
How would the atmospheric temperature structure differ from the generic structure if a planet had no greenhouse gases?
What will be an ideal response?