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At a certain instant, a 4 kilogram object is sliding eastward at a speed of 15 meter per second, propelled by an eastward force of 35 Newton. The coefficient of kinetic friction between the object and the horizontal surface it slides on is 0.20. No other horizontal forces act on the object. Assuming all forces remain constant, compute how far the object travels in the next 3 second.
The resolving power of a microscope depends on the wavelength utilized. If one wished to "see" a particular type of molecule, a resolution of 1.2 10-10 m would be needed. If electrons are used (in an electron microscope), what minimum kinetic energy ..
A 1280 N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1820 N crate hangs from the far end of the beam. Calculate the magnitude of the tension in the wire.
The image of an object seen in a mirror is twice its actual size. The orientation of the image is the same as that of the object. what is the focal length of the mirror
Your textbook has a mass of 2 Kg. Its dimensions are 28 cm by 23 cm by 3 cm. It is standing right side up on your book shelf resting on the smallest area. Calculate the pressure the book applies on the table in Pascals.
ccccthe Zambesi river in Africa rushes over Victoria Falls at a rate of 25 x 10^6 gallons per minute. The falls are 108 m high, 1 gallon equals 3.785 x 10^-3 m^3 (or 0.1337 cubic foot), and the water has a density of 1.00 x 10^3 kg/m3 (each cubic foo..
A hockey player strikes a puck that is initially at rest. The force exerted by the stick on the puck is 960 N, Find the impulse imparted by the stick to the puck
A point source of light is 70.0 cm below the surface of a body of water. Find the diameter of the circle at the surface through which light emerges from the water.
Find out the magnetic field strength
A 26 block of aluminum sits on the bottom of a tank of water. How much force does the block exert on the bottom of the tank
A baseball is hit at Fenway Park in Boston at a point 0.626 m above home plate with an initial velocity of 31.00 m/s directed 50.0° above the horizontal. find the vertical distance by which the ball clears the wall
A converging lens with a focal length of 31 cm is used to form an image on a screen that is 2.7 m to the right the lens. Where must the object be placed
question1it has been asserted that a permanent magnet is really just made up of an insulator with fixed positive
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