PLEASE ANSWER FAST WILL GIVE BRAINLIEST
Which two statements describe reasons that semiconductors must be
included in a solar cell?

0 A. They form a zone of separation between the glass layer and the
terminal layer.

O B. They provide a path through which electrons exit the surface of
the cell and never return.

O C. They provide a path through which released electrons move to
form an electric current.

O D. They provide a source of electrons to be released by the
photoelectric effect.

Aman tries to push a box of mass 4 kg with a force of 5 n but the box remains stationary if the coefficient of static friction is 0.45, what is the value of the maximum force of friction?

Energy is the ability to do work which measures what

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?