If a feather is dropped from a height, would its apparent weight be equal to its true weight or zero as in weightlessness.?
Stephen Hawking hopes that time travel is impossible, and hopes there’s a law of physics against it. But isn’t there already one?
A dog runs down his driveway with an initial speed of 5 m/s for 9 seconds, then uniformly increases his speed to 10 m/s in 5 seconds.?
What are the first three harmonics of a note produced on a 31.0 cm long violin string if waves on this string have a speed of 274.4m/s?
A small block is on the point of slipping down a rough ramp inclined at 35 degrees to the horizontal.
Is it possible to travel back in time? Like what method of experimentation could be done to test it out? Which sub field of physics is this?
Our Sun rotates about the center of our Galaxy (mG≈4×1041kg) at a distance of about 3×104 light-years
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