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A girl and her bicycle have a total mass of 40 kg. At the top of the hill her speed is 5.0 m/s. The hill is 10 m high and 100 m long. If the force of friction as she rides down the hill is 20N, what is her speed at the bottom?
A ten pound car wheel has a moment of inertia of 0.38 kg m2. What is the wheel's rotational kinetic energy
The length of the ice block is L1 = 0.00484 m and its temperature is T1 = -11.0 °C. The aluminum block is L2 = 0.00139 m long, Calculate the heat per second per square meter
A group of students need to cross a river in the shortest time. In what direction should the students head the boat
A 20g ball of clay traveling east at 3.0m/s collides, What is the speed of the resulting ball of clay
Two spherical objects have a combined mass of 200. The gravitational attraction between them is 8.01×10-6 while their centers are 21.0 apart.
An electron is released a short distance above Earth's surface, the first electron just great enough to cancel the gravitational force on it, How far below the first electron is the second
In a bizarre experiment devised by a physics teacher and an industrial arts teacher at a local high school, Find the mass of ethylene glycol m_c in kilograms to three significant digits
How high is the sun above the horizon to a fisherman. What is the coefficient of kinetic friction between tires and pavement.
find the distance along the ground, measured from a point directly beneath the point of release, to where the package hits the earth.
IO is a moon of jupiter, with a mass M= 8.9X10^22 kg, and radius of 1820Km. What period will this satellite have
The yellow light from a helium discharge tube has a wavelength of 587.50. When this light illuminates a certain diffraction grating it produces a first-order principal maximum at an angle of 1.050.
A chimp jumps up from a trampoline and lands on the ground, 1.2 meters below. the total time taken was .095 secons. what is the maximum height above the ground
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