A golf ball is launched at an angle of 45o. The ball has an initial vertical velocity of 12 m/s and an initial horizontal velocity of 12 m/s. Forget air resistance. The ball reaches its maximum height 1.2 seconds after it is launched and lands at the same height that is launched from. The total horizontal distance reached by the golf ball is about

He viscosities of several liquids are being compared. all the liquids are poured down a slope with equal path lengths. the liquid with the highest viscosity will

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is

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.