Sand falls from an overhead bin and accumulates in a conical pile with a radius that is always threethree times its height. suppose the height of the pile increases at a rate of 22 cm divided by scm/s when the pile is 1616 cm high. at what rate is the sand leaving the bin at that instant?

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.

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

Two students, each riding bicycles, start from the same apartment building and ride to the same building on campus, but each takes a different route. the first student rides 1100 m due east and then turns due north and travels another 1430 m before arriving at the destination. the second student heads due north for 1930 m and then turns and heads directly toward the destination.at the turning point, how far is the second student from the destination?