A 65.0 kg skier slides down a hill from a height of 30.0 m, on the incline of the hill assume there is no friction. At
the bottom of the hill the ground levels out and there is rough snow with a coefficient of kinetic friction between
the snow and the skis.
(a) How much work was done by friction?
(b) How far, along the horizontal ground, does the skier travel before they come to a rest?
In the text below, write out your final answers for (a), and (b). Your complete written work must be submitted at
the end of the exam.

Ajet plane has a sound level of 120 db at a distance of 60 m. what is the q23. sound level at a distance of 6.0 km? (60)2 (6000)? om solution 80db db, hint: 16x assume ultrasound waves travel through the body of an animal at 1540 q24. m/s. if a 30,000 hz signal were reflected off a portion of a heart which was moving toward the source at 3 m/s, what frequency signal would return to the stationary source? solution 30.117hz

Which feature of a heating curve indicates a change ofn state

Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?