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A 60.0 kg student runs up a 5.00 m high stairway in a time of 3.92 seconds. How many watts of power did she developed.
an athlete with a mass of 50 kg runs up a hill. the foot of the hill is 400 m above sea level and the summitis 900 m above sea level. calculate by how much the athleti's gravitational potential energy increases
A brick of mass 1.05 kg is attached to a thin (massless) cable and whirled around in a circle in a vertical plane. The circle has a radius of 1.46 m. The cable will break if the tension exceeds 49.0 Newtons. What is the maximum speed the brick can ha..
an ideal air conditioner operating on a carnot cycle absorbs heat q2 from a house at temperature t2 and discharges q1
tyrone an 85-kg teenager runs off the end of a horizontal pier and lands on a free-floating 158-kg raft that was
At the local swimming hole, a favorite trick is to run horizontally off a cliff that is 6.35 m above the water. find the number of revolutions she makes while on the way down
Which general pattern holds for various excited states in standing waves on a rope or string fixed at both ends? More antinodes mean shorter wavelengths. Standing waves involve the interference of waves traveling in the same direction.
A bank robbers travelling at 75 mi/hr in an escape car suddenly sees a barricade 150 meter ahead. Will the car hit the barricade, if so, determine what is its velocity
Newton's law of cooling (or, in our case, warming) implies that the temperature at time t is given by Find a and b.
a projectile is fired at an upward angle of 45deg from the top of a 242 m cliff with a speed of 208 ms. what will be
An object is placed 5 cm in front of a spherical mirror. A virtual image is formed 10 cm behind the mirror. What is the magnification of the mirror
A rifle with a weight of 40 N fires a 3.5 g bullet with a speed of 240 m/s. find the recoil speed of the man and rifle
Q. How do i find the height of a triangular prism with the given volume of 35 ft cubed and a given base of 30 ft squared?
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