Giant impact theory The Moon was formed from the collision between
Earth and another Mars-sized body.
colliding planetesimbols hypothesis
The Moon was formed from collisions and combining
of planetesimals.
capture hypothesis
The Moon was locked into orbit by Earth's
gravity as it was passing by it.
accretion hypothesis
The Moon was formed from the same cloud
of material as Earth.

Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earth’s electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?

Awheel of mass 48 kg is lifted to a height of 0.8 m. how much gravitational potential energy is added to the wheel? acceleration due to gravity is g = 9.8 m/s2. a. 30.4 j b. 3.1 j c. 297.9 j d. 11,321 j

At what time will the interfering waves have an amplitudeof zero?