You wish to determine the length of a runway that will be necessary for an airplane to take off. The airplane has a propeller that can produce a constant thrust and the airplane must have a minimum airspeed to take off. What additional information do you need to determine the required minimum length of the runway, and how would you use that information to calculate the length

Free runners jump long distances and land on the ground or a wall. how do they apply newton’s second law to lessen the force of impact?

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.

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.