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A box is sliding down a plane inclined at an angle of 20degrees from the horizontal. Find the acceleration of thebox,neglecting friction and resisitance.If that box is hurled upthe inclined plane starts up the plane with an initial velocity of1000cm/sec what is the speed of the box three sec later?
Gold, which has a mass of 19.32 g for each cubic centimeter of volume, is the most ductile metal and drawn out into a long fiber. what is the length of the fiber
A 72 kg person has an apparentmass of 45 kg (because of buoyancy)when standing in water that comes up to the hips. Estimate the massof each leg
A hockey puck slides over ice with \mu _k = 0.013. What initial speed should the puck have so it travels the 56 m length of the rink
the helicopter in the drawing is moving horizontally to the right at a constant velocity. the weight of the helicopter
A 2.80 kg gold bar at 98 degrees celcius is dropped into 0.34 kg of water at 23 degree celcius. what is the final temperature? assume the specific heatof gold is 129 J/kg
An electron traveling at v = 1.20 x 10^5 m/s passes from (2.00 m, 1.00 m, 3.00m) to (7.00 m, 3.00 m, 1.00 m), What is the force that electron experiences the instant
A prospector finds a solid rock composed of granite (? = 2650 kg/m3) and gold. The volume of the rock is 2.85 multiplied by 10-4 m3, What mass of gold is contained in the rock
According to one estimate, the first atomic bomb released an energy equivalent to 20 kilotons of TNT. how much uranium was lost through fission in this bomb
A house is 30.0 ft long and 25.0 ft wide, and has 8.0 ft high ceilings. What is the volume of the interior of the house
Calculate the power of the corrective lens required by a hyperopic eye whose near point is at 100.0 cm
small particles might be blown out of solar systems by the radiation pressure of sunlight. assume that the particles
A constant horizontal force Fa pushes a 3.70 kg FedEx package across a frictionless floor on which a xy coordinate system has been drawn. it gives the package's x and y velocity components versus time t. (The vx axis is marked in increments of 1.2..
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