If r is the total resistance for a parallel circuit with two resistors of resistance r1 and r2, then . find the resistance, r1, if the total resistance r is 20 ohms, and r2 is 75 ohms. round your answer to the nearest ohm if necessary. 1/r = 1/r1+1/r2

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.

What causes the development of most clouds and precipitation in the atmosphere?

Which planets are visible without a telescope