How much force is needed to accelerate a 68 kg skier at a rate of 1.2m/sec^2

How many ways can matter change

Calculate the hydrostatic difference in blood pressure between the brain and the foot in a person of height 1.93 m. The density of blood is 1.06 * 103 kg/m3.

High energy waves have short wave lengths, true or false?

A concave lens of power - 2D is placed in contact with a convex lens of power + 1.5D what will be the resultant power

A light ray is incident on a reflecting surface. If the light ray makes a 40° angle with respect to the normal to the surface, what is the exact angle (in degrees) made by the reflected ray relative to the normal?

When a fork is placed in a hot piece of lasagna, thermal energy is transferred up the fork by ...

Levi observed properties of four different waves and recorded observations about each one in his chart.

A rocket is shot straight up from the earth, with a net acceleration (acceleration by the rocket engine minus gravitational pullback) of during the initial stage of flight until the engine cut out at sec.

Which moon has a thick atmosphere made mostly of nitrogen?

J. J Thompson proposed that atoms were made up of positively charged particles with electrons scattered into them. How did he reach this conclusion?