The best theory for how our Moon formed is... that a rapidly rotating Earth ejected material that formed the Moon.

that they formed together via accretion in the protoplanetary disk.

that the Earth gravitationally captured the already formed Moon.

that a huge planetesimal collided with the Earth and the resulting debris formed the Moon.

Describe the path of a ray that approaches a mirror parallel to the principal axis.

If the temperature were raised very high, classically what would we expect the heat capacity per object to be for this one-dimensional system? give a numerical value. chigh t = __ j/k/object (one reason for the discrepancy is that the high-temperature limit assumes that the number of oscillators is large (n > > 1), which is not the case in this tiny system.)

Initially, a particle is moving at 5.33 m/s at an angle of 37.9° above the horizontal. two seconds later, its velocity is 6.11 m/s at an angle of 54.2° below the horizontal. what was the particle's average acceleration during these 2.00 seconds in the x-direction (enter first) and the y-direction?