In pole-vaulting, in addition to gravitational potential energy there is potential energy in the bent pole which is analogous to potential energy stored in a ________ under compression.
Fill in the blank(s) with the appropriate word(s).
spring
You might also like to view...
A current flowing through a long, straight wire causes a magnetic field that points
A. along concentric circles around the wire. B. radially outward from the wire. C. radially inward toward the wire. D. along the wire.
A waiter fills your water glass with ice water (containing many ice cubes) such that the liquid water is perfectly level with the rim of the glass. As the ice melts,
A) the liquid-water level decreases. B) the liquid-water level remains flush with the rim of the glass. C) the liquid water level rises, causing water to run down the outside of the glass.
The hypernova model of the collapse of the core of a massive star may describe
A. the gravitational collapse of a protostar prior to the main sequence phase B. the feeding of material into a quasar C. a neutron star D. a relatively long gamma ray burst E. a black hole
Which of the following travel at or very near lightspeed?
A) photon B) neutrino C) Both of the above. D) Z particle E) All of the above.