Your car is initially moving at 26.5 m/s when your hit the brakes and the car begins to slow down. The car has a mass of 1892 kg
and the coefficient of friction between the tires and the road is
0.22. What is the time needed to stop the car and how much
ground does it cover during this process?

Which of the following is not a transverse wave? a) soundb) lightc) radiod) all of thesee) none of these

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.

Select all the correct answers. which three statements about electromagnetic radiation are true?