Do all types of waves need a medium to travel through

The acceleration due to gravity on jupiter is 2.5 times whats on earth. An object of mass 10kg is taken to Jupiter. What is the mass there?

A car slows down uniformly from a speed of 29.0 m/s to rest in 8.20 s how far did it travel

A simple pendulum has a period of 1.0 s. If you take this pendulum to Mars where the acceleration of gravity is 3.8 m/s2, what will the period of the pendulum be

Polarized sunglasses work by A. blocking light waves that vibrate in one plane. B. gradually refracting light as it passes through the lenses. C. reflecting most of the light that strikes the sunglasses. D.

What is a fluid ability to excert an upward force on an object

Which type of wave experiences a change in speed when entering a new medium? a) only sound waves b) both sound and light waves c) only light waves d) neither sound or light waves

Three basic classes of collisions include all but which of the following?

How does the use of biomass energy to create electricity harm the environment

Which physical property of iron made it popular for use in weapons? 1. Magnetism 2. Luster 3. Malleability 4. Ductility

a 2 kg rock is dropped from the top of a 30 m High building calculate the ball at the time that it strikes the ground