Hello!, the problem is in Spanish, but you can solve it, I will translate it the question C says "what is the speed value in each trip", so I don't know how to find the value between the 5 and 15. I need help!! thank you

If the speed of a particle triples ,by what factor does its kinetic energy increase?

How do you tell if someone actually cares about you? and just say they do?

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.