The Earth's lithosphere has broken up into plates because of
A) earthquakes
B) tidal forces due to the Moon
C) tidal forces due to the Sun
D) mantle convection
D
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Simple Harmonic Motion: A sewing machine needle moves up and down in simple harmonic motion with an amplitude of 1.27 cm and a frequency of 2.55 Hz. What are the (a) maximum speed and (b) maximum acceleration of the tip of the needle?
What will be an ideal response?
A series circuit consists of three identical lamps connected to a battery as shown in Figure OQ28.15. The switch S, originally open, is closed. What happens to the total power delivered to the lamps by the battery?
The flow of heat in a cold soft drink will be from ______
a. the drink to the ice cubes b. the drink to the outside air c. the drink to the glass d. the ice cubes to the drink
Define velocity, and give an example