A 40 kg skier starts at the top of a 12-meter high slope at the bottom she is traveling 10 m/s how much energy does she lose friction?

A. she doesn't lose any because mechanical energy is always conserved

B. 4,704 J

C. 2,000 J

D. 2,704 J

A minisplit has a cooling capacity of 1200 BTU. How many kcal is equivalent?

A hydraulic jump at the base of a spillway of a dam is

List all possible locations, situations gravity is absent

Which composition of water moves to begin a deepwater current?

The momentum of a type bumper at an amusement park should not exceed 2100kgm/s to ensure the safety of the visitors to the park. If each bumber car has the mass of 780kg will the ride be safe if the bumper car are limited to a top speed of 3m/s

To which period in the periodic table does chlorine belong?

Bus A and Bus B leave school on a field trip when a stopwatch reads zero. Bus A travels at a constant 50 km/h, and Bus B travels at a constant 75 km/h. How far are the two buses from school when the stopwatch reads 1.5 h?. a ... Bus A is 76.

When observed from Earth, the wavelengths of light emitted by a star are shifted toward the red end of the electromagnetic spectrum. Why does this redshift occur?

Object A has a length of 3 cm, a width of 10 cm, and a height of 2 cm. Object B is dropped into a graduated cylinder. It displaces 60 mL of water. The volume of object A is:

Is the following sentence true or false? Some information about an object or process may be missing from a model.