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Kekoa takes his bodyboards to Mauna Kea to use as a sled. From rest, he jumps onto the bodyboard and slides down a 5-m high hill (vertical height is 5-m). His speed at the bottom is 9 m/s. Kekoa's mass is 60 kg and the sled is 1 kg. How much thermal energy was produced in this process?
A non-uniform flask consists of a lower portion that is a circular cylinder 20 cm in radius and 20 cm high. The upper portion is also a circular cylinder, which is 2 cm in radius and 40 cm high.
A box of unknown mass is sliding with an initial speed vi = 5.90 m/s across a horizontal frictionless warehouse floor when it encounters a rough section of flooring d = 2.10 m long. determine the final speed of the box after sliding across the rou..
a fugitive tries to hop on a freight train traveling at a constant speed of 5.0 ms. just as an empty box car passes him
The density of a 2.45-m long rod can be described by the linear density function ?(x) = 121 g/m + 13.5x g/m2. One end of the rod is positioned at x = 0 and the other at x = 2.45 m. Determine the total mass of the rod
How much work is done by the horizontal force F_p = 150 N on the 18 kg block of the figure when the force pushes the block 5.5 m up along the 32 degree frictionless incline
two point charges are on the y-axis. a 2.5 microc charge is located at y 1.50 cm and a -2.48 microc charge is located
A lamp hangs vertically from a cord in a descending elevator that decelerates at 1.4 m/s2. If the tension in the cord is 86 N, what is the lamp's mass
A cannon fires a cannon ball at 999.16 m/s in a straight line that passes directly over an observer's head. how far is the cannon from the observer
Monochromatic light falls on two very narrow slits 0.050 apart. Successive fringes on a screen 5.90 away are 6.0 apart near the center of the pattern. A. Determine the wavelength of the light. B. Determine the frequency of the light.
A 0.20-kg particle moves along the x axis under the influence of a stationary object. The potential energy in SI unit is given by U(x) = 80.0x + 20.0x^2, find the turning points of the motion
Object A, which has a mass m and a velocity v0, collides head-on with object B, which has a mass 2m and a velocity 1/2v0. Following the collision, object B has a velocity of 1/4v0. (a) Determine the velocity of object A after the collision. v = ? If ..
A bicyclist starts from rest at the top of a hill and rolls down the hill without pedaling. what is the bicyclist's speed at the bottom of the hill
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