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A girl and her bicycle have a total mass of 35 kg. At the top of a hill her speed is5 m/s. The hill is 11 m high and 100 m long. If the force of frictionas she rides down the hill is 15 N, what is her speed at the bottom?
Calculate the moment of inertia acting on a 2X4 stud (viewed as a thin rod) of approximately 2.25 m with a mass of 5.00 kg, rotated through the center of the beam
Moon effect. Some people believe that the Moon controls their activities. By what percent does your weight (as measured on a scale) decrease
q1. the flywheel of an engine has a moment of inertia 2.20 rm kg cdot rm m2 about its rotation axis. what is its final
Using a 679-nm wavelength laser, you form the diffraction pattern of a 0.101-mm wide slit on a screen. How far is the screen located from the slit
1. you are hired by an industry that owns a building with a floor area of 6 m by 10 m and a ceiling height of 4 m. the
A sphere of radius r starts from rest and rolls without slipping along a curved surface, dropping through a vertical distance of 0.303 m. Find the final speed v of the sphere's center of mass
4 moles of an ideal gas have an initial temperature of 127 C. The temperature of the gas is kept constant and the volume is increases until the pressure drops to 40.0% of its original value. Calculate the heat added to the gas
An open container holds ice of mass 0.530 kg at a temperature of -15.7 Celsius . The mass of the container can be ignored. Heat is supplied to the container at the constant rate of 810J/minute.
A proton is moving toward a wire that carries current in the direction shown. What is the direction of the force on the proton
spy planes fly at extremely high altitudes (25.5 km) to avoid interception. what must be the minimum aperture of the camera lens to afford this resolution
A thin film of acetone is floated on a thick glass plate .plane light waves of variable wavelengths are incident normal to the film.when one views the reflected wave it is noted that the complete destructive interference occurs at 600 nm and const..
Bob throws a 500 g rock at 25 m/s, moving his hand through 1.0 m as he accelerates it from rest. Write Newton's 2nd Law for Bob and the rock
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