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A 2000-kg car is traveling at 20 m/s around a curve with a radius of 100 m. What is the angular momentum of the car? (in kg"m2/s)
The unit of horsepower was defined by considering the power output of a typical horse. What power does this represent in hp
a star of mass 1.85times1031 kg and diameter 8.20e9 m rotates with a period of 27.0 days. suddenly the star changes
An object falls because of gravity at the rate of -920 cm/s2 (- sign is indicative of a downward direction) for 10.00 Seconds. If it starts from rest (vo = 0) and its position starts from do= 0.0, where is it 10.00 Seconds later.
An electric generator contains a coil of 90 turns of wire formed into a rectangular loop 40.0 cm by 35.0 cm, placed entirely in a uniform magnetic field with magnitude B = 3.50 T and with Bvec initially perpendicular to the coil's plane. What is the ..
An item is 21 cm from a lens with a focal length of +12 cm (convex lens). How far away must the screen be to produce an image, and what is the magnification of the image? Draw a rough picture of where the image is in relation to the object and the..
A girl pulls a 26 kg block 6.44 m along a level floor at constant speed with a horizontal force. If the coefficient of kinetic friction between block and floor is 0.25 , what is (a) the work done by the girl's force and (b) the increase in thermal..
A television set connected to a 120 outlet consumes 73 of power. How much current flows through the television
A geodesic dome constructed with an aluminum framework is a nearly perfect hemisphere; its diameter measures 56.0 m on a winter day at a temperature of 12.5°C.
A 3.9 kg stone is tied to a 5.8 m long string and swung around a circle at a constant angular velocity 1.7 1/s. Find the magnitude of the torque about the origin
A previously evacuated tank with a capacity of 0.1 m3 is pressurized with one kilogram each of helium (molar mass 4.0) and nitrogen (molar mass 28.0). What is the final pressure of the mixture
A 5.00x105-kg rocket is accelerating straight up. Its engines produce of thrust, and air resistance is . What is the rocket's acceleration? Explicitly show how you follow the steps in the Problem-Solving Strategy for Newton's laws of motion.
question a 3.0-kg block is pulled along a frictionless surface with a force of 42n. attached to that block with a light
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