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A skateboarder starts up a 1.0-m-high, 30ramp at a speed of 7.2m/s. The skateboard wheels roll without friction. At the top, she leaves the ramp and sails during the air.
How far from the end of the ramp does the skateboarder touch down?
1. find the mass of 600 cubic centimeters of water.2. what is the volume of 50 kg of water.?3. what is the volume of 50
A 82-kg sprinter accelerates from rest to a speed of 11.0 m/s in 4.5 s. at what average rate is he burning Calories
A certain loudspeaker has a diameter of 45 cm. At what frequency would the wavelength of sound it emits in air be equal to its diameter.
A block is hung by a string from the inside roof of a car. Then the string makes an angle with the vertical. Find what the angle
Two pieces of steel wire with identical cross sections have lengths of L and 4L. calculate the frequency of the second harmonic in the longer wire
A patient recovering from surgery is being given fluid intravenously. The fluid has a density of 1040 kg/m3, and 9.54 10-4 m3 of it flows into the patient every five hours. Find the mass flow rate in kg/s
two point charges each have a value of 30.0 mC, compute the electric field midway between the two charges
Two ice skaters, Daniel (mass 70.8 kilogram) and Rebecca (mass 50.3 kilogram) are practicing. Determine the change in total kinetic energy of the two skaters as a result of the collision
train engine has a mass of 2.1 x 107 and is moving acrossed a bridge at 23.9 miles per hour what is the kinetic
Suppose you have a spherical balloon filled with air at room temperature and 1.0 atm pressure; its radius is 11 cm. what's the balloon's new radius
An apartment has the dimensions 8m by 5m by 3m. Thetemperature is 25 degrees C, and the relative humidity is60%. How much water vapor does each cubic meter of aircontain
The chamber of a rock-tumbling machine is a hollow cylinder withmass 69 g and radius 7.1 cm. The chamberis closed off by end caps in the form of uniform circular diskseach of mass 22 g.
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