Draw what the net acceleration vs time graph would look like if: a) The net force is zero
b) Starting from rest, a car has a linear increase in velocity up to a constant velocity.
c) A ball is slowed to a stop by friction.

Please help. I am bleeding points in this class and can't afford to lose more. This is just a homework question, but my professor grades homework for correctness, not completion.

Matt is driving down 7th street. he drives 150 meters in 18 seconds. assuming he does not speed up or slow down, what is his speed?

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.

What happens to an isotope during radioactive decay?