Consider two frictionless inclined planes with the same vertical height. Plane 1 makes an angle of 30 degrees with the horizontal, and plane 2 makes an angle of 60 degrees with the horizontal. Mass m1 is placed at the top of plane 1, and mass m2 is placed at the top plane 2. Both masses are released at the same time. At the bottom, which mass is going faster?

According to newton’s law of universal gravitation, which statements are true? as we move to higher altitudes, the force of gravity on us decreases. as we move to higher altitudes, the force of gravity on us increases. as we gain mass, the force of gravity on us decreases. as we gain mass, the force of gravity on us increases. as we move faster, the force of gravity on us increases.

Aparticle of mass m is placed in a one-dimensional box of length l. the box is so small that the particle’s motion is relativistic, so that e p2/2m is not valid. (a) derive an expression for the energy levels of the particle using the relativistic energy–momentum relation and the quantization of momentum that derives from connement. (b) if the particle is an electron in a box of length l 1.00 1012 m, nd its lowest possible kinetic energy. by what percent is the nonrelativistic formula for the energy in error?

What is the largest meteoroid that has collided with this planet