a 40 kg ballet dancer stands on her toes during a performance with four square inches (26cm squared, in contact with the floor and the pressure is 151,000 pa . what is the pressure exerted by the floor over the area of contact if the dancer is leaping upwards with an acceleration of 6.00 m/s squared

How many times did thomas edison mess up the light bulb

The direction of the current in an alternating current circuit remains constant. is direct. changes repeatedly. changes randomly.

22. the top of a cliff is located a distance h above the ground. at a distance h/2 there is a branch that juts out from the side of the cliff, and on this branch a bird's nest is located. two children throw stones at the nest with the same initial speed, one stone straight downward from the top of the cliff and the other stone straight upward from the ground. in the absence of air resistance, which stone hits the nest in the least amount of time?