A/ Can someone help me, how can the third law of motion (Newton) help solve a problem / issue. be specific b/ how can pushing off a wall on a skateboard demonstrate the third law of Newton. If needed use gravity, friction, and air resistance.

c/ How can dropping a ball on the ground demonstrate the third law of Newton. If needed use gravity, friction, and air resistance.

Many machines- including inclined planes such as ramps- increase the strength of the force put into the machine but decrease the distance over which the force is applied.

Diamond will scratch quartz. true or false

Antireflective coatings on solar cells are often made by applying a thin film of silicon nitride (sinx), which has an index of refractive of 1.2, on the top of the silicon solar cell, which has a refractive index of about 3.5. however, the sun emits radiation of various wavelengths which the solar cell absorbs, and the antireflective coating can only absolutely minimize the reflection of one of these wavelengths. the coating thickness is chosen to reduce the reflection of green/yellow light (e = 2.2 ev), which is the most intense color in the solar spectrum (shown below). which of the following coatings would minimize reflection of green/yellow light? the answer is 820 nm how? what is the angular width of the central maximum of an electron traveling at 2 x 108 m/s going through a single slit of width 1 mm.