Aproton moves through a region of space where there is a magnetic field b = (0.45i + 0.38j) t and an electric field e = (3.0i - 4.2j) x 10^3 v/m. at a given instant, the proton's velocity is v = (6.0i + 3.0j - 5.0k) x 10^3m/s. determine the components of the total force on the proton.

Why can blue light and yellow light combine to produce white light? question 17 options: they are both primary colors of light. they absorb each other's wavelengths. because blue, yellow, and white are primary colors. they are complementary colors of light.

Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?