A 40.0 kg ballet dancer stands on her toes during a performance with 25.0 cm2 in contact with the floor. What is the pressure exerted by the floor over the area of contact if the dancer is stationary

On a frictionless track, cart 1 is moving with a constant, rightward (+) velocity of 1.0m/s. Cart 2 is also moving rightward with constant velocity of 5.0m/s. After a while, cart 2 collides cart 1 from behind. (It is an elactic collision.

The statement that "the lowest energy configuration for an atom is theone having the maximum number of unpaired electrons allowed by thePauli principle in a particular set of degenerate orbitals" is known asa. Pauli Exclusion Princpleb. Hund's rulec.

When dr. hewitt drops a book and a crumpled piece of paper together from the same height, which one hits the ground first?

How is chemical activity used to separate copper from its ore?

An alpha particle (charge + 2e) travels in a circular path of radius. 5m in a magnetic field of 1.0 T. Find the (a) period, (b) speed, and (c) kinetic energy (in electron volts) of the alpha particle. Take m = 6.

Unlike the idealized voltmeter, a real voltmeter has a resistance that is not infinitely large. part a a voltmeter with resistance rv is connected across the terminals of a battery of emf e and internal resistance r.

The acceleration of an object is the slope of its velocity-time graph. True False

When a cannon fires a cannonball, the cannon will recoil backward because the?

True or False: As we learn more about organisms how we classify them can continue to change. O True O False

Convert 4,200 decigrams to grams