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A 79 kg skier starts from rest at the top of a ski slope 58 meters high, if the fricitonal forces do -11.3 kj of work on her as she descends, how fast is she going at the bottom of the slope? Give answer in meters per second.
A ball is thrown toward a cliff of height (h) with a speed of30 m/s and an angle of 60 degrees above the horizontal. What is the ball's impact speed
A spherical pot of hot coffee contains 0.75L of liquid (essentially water) at an initial temperature of 90 degree celsius. Calculate the coffee's rate of heat loss by radiation
A simple pendulum has a length of 52.4 cm and makes 83.7 complete oscillations in 2.00 min. Find the period of the pendulum
question a neucleus undergoes radioactive decay emitting a gamma raywhich of the following is true?a. the daughter
the average person passes out at an acceleration of 7g that is seven times the gravitational acceleration on earth.
Comet Halley moves about the Sun in an elliptical orbit with its closest approach to the Sun being about d1=0.59 AU, What is its speed when it is furthest away from the sun
A planet orbits a star, in a year of length 2.49 x 107 s, in a nearly circular orbit of radius 2.39 x 1011 m. With respect to the star, evaluate the angular speed of the planet
A rectangular loop of wire is sitting next to a straight wire, What is the magnitude on the net force on the loop
you are given vectors a? 5.1 i? 6.6 j and b? - 3.6 i 7.1 j. a third vector c? lies in the xy-plane. vector c? is
A gas is compressed at a constant pressure of 0.800 atmfrom 7.00 L to 3.00 L. In the process, 400 J of energy leaves the gas by heat. What is the work done on the gas? What is the change in its internal energy?
A uniform magnetic field of 25 mT magnitude points into the page. The wire is 1.4m long and straight, but has a loop smack in the middle. Calculate the amount of voltage induced if measured at the ends of the wire
An automobile tire is inflated with air originally at 10.0°C and normal atmospheric pressure. During the process, What is the tire pressure in pascals
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