The resistance of the skin can be made negligible by soaking the hands in salt water. Estimate the resistance between your hands while taking a shower or bath (so that the resistance of your skin is negligible). Do this by approximating the path between your outstretched arms as a cylinder. Measuring the diameter of your arm (somewhere near the elbow should work) and the distance between your hands with your arms outstretched will give the necessary information to calculate your resistance

Abaseball is thrown a distance of 20 meters. what is its speed if it takes 0.5 seconds to cover the distance

In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. the cylinder begins to rotate about a vertical axis. then the floor on which the passengers are standing suddenly drops away! if all goes well, the passengers will “stick” to the wall and not slide. clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. part a what is the minimum rotational frequency, in rpm, for which the ride is safe? express your answer using two significant figures. f f = rpm

If we compare the force of gravity to strong nuclear force, we could conclude that