A 55 kg skater spins 12 m/s while carving a circle on the ice that has a radius of 6.0m. What net force must act on the skater to keep her in the circular path?

A coating of film n=1.33 on glass slabs (n=1.6) is 8.3 * 10E - 5 cm thick. If white light is incident normally, which visible wavelengths are missing in the reflected light?

What is the main difference between velocity and speed?

Energy that is "lost" during a transformation it is given off as what?

Two balls are thrown straight up. the first ball is thrown with twice the initial speed of the second. ignore air resistance. how much higher will the first ball rise?]

A goldfish is swimming at 3.20 cm/stoward the front wall of a rectangular aquarium. What is theapparent speed of the fish as measured by an observer looking infrom outside the front wall of the tank? The index of refraction ofwater is 1.333

A thermometer is placed in water in order to measure the water's temperature. What would cause the liquid in the thermometer to drop? A. The molecules in the water spread apart. B. The molecules in the thermometer's liquid spread apart. C.

The amount of energy carried by a wave is proportional to the square of the wave's A. frequency B. amplitude C. wavelength D. period ... ?

The pressure at the bottom of a jug filled with water does not depend on

at what other angle will a thrown ball go the same distance as one thrown at an angle of 75 degrees?

A record player turntable initially rotating at 3313 rev/min is braked to a stop at a constant rotational acceleration. The turntable has a rotational inertia of 0.031kg? m2.