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A block of mass m = 7 kg is sliding down an inclined plane. The coefficient of kinetic friction is μk = 0.36. The angle θ of the inclined plane with respect to the horizontal is adjusted such that the block slides at a constant speed of 19.8 cm/s. Calculate the angle of inclination of the plane.
a person pulls a 10kg weight across a floor a distance x=2.0m by pulling on a rope with 50N directed 15 degrees above the horizontal. compute the work done by each one
When verticaly falling sand hits a horizontally moving cart, the cart slows. avoid any friction between the cart and the tracks. Give two reason for this, one in terms of a horizontal force acting on the cart, and one terms of momentum conservatio..
A cockroach of mass m lies on the rim of a uniform disk of mass 4m that can rotate freely about its center like a merry-go-round. compute the angular velocity of the cockroach-disk system
A flea's eye having a diameter of 0.003 mm is examined under a microscope. If the microscope has a magnification of 500X, determine the size of the image of the eye
A point charge 5.00 nC is at the center of a cube with sides of length 0.140 m. What is the electric flux through one of the six faces of the cube
A rock is thrown from the roof of a building with a velocity v(0) at an angle alpha(0) of from the horizontal. Calculate the magnitude of the velocity of the rock just before it strikes the ground
four moves you are to make four straight-line moves over a flat desert floor starting at the origin of an xy coordinate
A Goodyear blimp typically contains 5400m3 of helium (He) at an absolute pressure of 1.1multiplied by 105 Pa. What is the mass of the helium in the blimp
Calculate the value of the error (only) with two decimal places for: (5.3 +/- 0.1) / (2.9 +/- 0.1) and (7.3 +/- 0.4) / (3 +/- 0.2)
If the operators of a spy satellite pondered using it to photograph license plate numbers. what is the smallest distance between two points that it can resolve
Light with wavelength 648 nm in air is incident perpendicularly from air on a film 8.76 µm thick and with refractive index 1.35. What is the phase difference between these two parts of the light as they leave the film
A large, hot pizza 86 cm indiameter and 2.0 cm thick, with a temperature of 104°C, floats in outer space. What is the order of magnitude of its rate of energy loss
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