A hockey puck traveling at speed v on essentially frictionless ice collides elastically with one end of a straight stick lying flat on the ice. In this collision
a. momentum is conserved.
b. angular momentum is conserved.
c. energy is conserved.
d. all of the above are conserved.
e. only momentum and angular momentum are conserved.
d
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What will be an ideal response?
The charge on a glass rod which has been rubbed with silk is called positive:
A) by arbitrary convention B) so that the proton charge will be positive C) to conform to the conventions adopted for G and m in Newton's law of gravitation D) because like charges repel E) because glass is an insulator
How does the heat Jupiter radiates compare to the energy it receives from the Sun?
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Which way does the Sun appear to move along the ecliptic from day to day?
What will be an ideal response?