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A particle in shm has a time period of 4s. It takes time t1 to start from mean position and reach half of the amplitude. In another case, it takes a time t2 to start from extreme position and...

For orbiting satellites, the mass of the satellite always cancels in our centripetal force equation. Use the equation to justify why it is the satellite’s mass, and not the mass of the central planet,...

Our sun orbits around the centre of our galaxy (the Milky Way) once every 2.5 x 108 years. The radius of the sun’s orbit about the centre of the galaxy is approximately 3.15 x 1020 m. The sun has...

1) Calculate the energy in eV corresponding to the 500 nm of light inside a medium with refractive index 1.2. 2) The frequency of light coming out from a laser source is 142 MHz....

A favourite swimming hole includes a rope swing from an elevated landing. The boy swings down and releases with a velocity of vf at the bottom of the swing. Use Energy, then Dynamics to determine...

John and Barry are pulling on a fence post with ropes while their friend Pat uses a chainsaw to share it at ground level. John applies a force of 75.0 N [40 degrees] on one rope while Barry applies...

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