Nerve impulses travel at different speeds, depending on the type of fiber through which they move. The impulses for touch travel at 76.2 {\rm m/s}, while those registering pain move at 0.610 {\rm m/s}. Assume that person's brain is 1.81 m from his toe and that the impulses travel directly from toe to brain.1. If a person stubs his toe, find the time for the impulse for touch to reach his brain. t=___s2. If a person stubs his toe, find the time for the impulse for pain to reach his brain. t=___s3. Find the time delay between the pain and touch impulses.{\Delta t} =s

Ben(55 kg) is standing on very slippery ice when junior(25kg) bumps into him. junior was moving at a speed of 8m/s before the collision and ben and junior embrace after the collision. find the speed of ben and junior as they move across the ice after the collision .

1point) a skydiver weighing 130 lb (including equipment) falls vertically downward from an altitude of 14,000 ft and opens the parachute after 20 s of free fall. assume that the force of air resistance, which is directed opposite to the velocity, is of magnitude 0.85|v|0.85|v| when the parachute is closed and is of magnitude 17|v|17|v| when the parachute is open, where the velocity vv is measured in ft/s. assume that acceleration due to gravity has magnitude 32 ft/s/s; remember that weight is the product of mass and gravitational acceleration. find the speed of the skydiver when the parachute opens. speed is 150.6121788 ft/s find the skydiver's height when the parachute opens. height is 2338.98591 ft find the limiting velocity vlvl after the parachute opens. (think about whether this should be positive or negative.) vl=vl= 7.647 ft/s

The energy equivalent of the rest mass of an electron is