A mass is pressed against (but is not attached to) an ideal horizontal spring on a frictionless horizontal surface. After being released from rest, the mass aquires a max speed v and amax kinetic energy K. If instead the mass intially compresses the spring twice as far. A- Its max speed will be 2v and it's max kenitic energy will be Sqroot(2) K. B- Its max speed will be 4v and it's max kenitic energy will b 2 K. C- Its max speed will be v Sqroot(2) and it's max kenitic energy will b 2 K. D- Its max speed will be 2v and it's max kenitic energy will b 4 K. E- Its max speed will be 2v and it's max kenitic energy will b 2 K.
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Physics, 22.06.2019 04:00
Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.
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Physics, 22.06.2019 14:00
What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration
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A mass is pressed against (but is not attached to) an ideal horizontal spring on a frictionless hori...
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