A solid sphere, solid cylinder, and a hollow pipe all have equal masses and radii. If the three are released simultaneously at the top of an inclined plane, which will reach the bottom first?
A) sphere
B) pipe
C) cylinder
D) they all reach bottom in the same time
E) It depends on the angle of inclination.
A
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It is possible for the Moon to rise at the same time as the Sun.
Answer the following statement true (T) or false (F)
A book rests on a level table top. Which force does Newton's third law imply is equal in magnitude but opposite in direction to the weight of the book?
A) the force of the table on the earth B) the force of the earth on the table C) the force of the book on the earth D) the force of the table on the book E) the force of the book on the table
Briefly describe at least three likely consequences of continued human burning of fossil fuels adding to Earth's greenhouse effect
What will be an ideal response?
Increased temperature usually leads to an increase in reaction rate because collisions are
a. more violent only. b. more frequent only. c. both more violent and more frequent. d. none of these