Two students were responsible for recording the velocity of a rocket that blasted from ground zero. Student A recorded the final velocity at 4,680 ft/min. Student B was responsible for recording the initial velocity after thrust burnout which was 900 km/sec. What would be the acceleration of this rocket in m/s2, if the total amount of flight was 980 seconds? What is the acceleration from problem 1 in mph?

A car accident happened on the corner of 42nd and Grandview. A police officer measured the skid line of the truck involved. It measured to be 536 ft. A camera caught the truck stopping in 7 sec. Determine how fast the truck was traveling in miles/hr.

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.