What does mechanical wave mean?

In a sound wave, the magnitude of the compression is ___ the magnitude of the rarefaction. greater than less than equal to

A spherical balloon of volume 4.00 x 10 - 3 m contains helium at a pressure of 1.20 x105 Pa. How many moles of helium are in the balloon if the average kinetic energy of the helium atoms is 3.60 x 10-22 J?

What is another name for Kepler's third law

You started to run at 10 km/h when you left your house and you arrived at school 30 minutes later. Assuming that your average acceleration was 30 km/h/h, how fast were you running when you arrived? a) 15 km/hb) 20 km/hc) 25 km/hd) 30 km/h

What would be the reactant (s) of the following chemical reaction: (all numbers should be smaller [subscripts]) H2O2 - - > H2O + O2

Explain how wavelength and frequency are important when determining the type of light.

Suppose that you had an electrically charged stick. If you divided the stick in half, each half would have half the original charge. If you split each of these halves, each piece would have a quarter of the original charge.

Technician a says that when measuring a rotor's thickness variation, you should measure the rotor in a minimum of five to eight places around the face of the rotor.

What acceleration will you give to a 25kg box if you push it with a force of 85N

Lightning occurs when there is a flow of electric charge (principally electrons) between the ground and a thundercloud. assume that the rate of charge flow in a lightning bolt is about 24000 c/s and this lasts for 105 µs or less.