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An arrow is shot horizontally from a cliff. the cliff is 421.7 m above the ground. the arrow left the cliff with a speed of 29.8 mi/hr. How far (in meter) from the base of the cliff the arrow land?
In a certain binary-star system, each star has the same mass whichis 1.6 times of that of the Sun, and they revolve about theircenter of mass. What is their period of revolution in years
A person exerts a horizontal force of F = 169N in the test apparatus. (h = 0.32m.) Find the horizontal force M that his flexor muscle exerts on his fore arm.
An ideal heat-engine is to be used in an environment where the ambient temperature is 22.50 °C. What must be the minimum temperature of the hot heat reservoir in order to reach at least 46.40 percent efficiency with heat-engine? (Give the answer i..
You combine two thin lenses by placing them in contact so that their axes coincide, Find the focal length of this compound lens
A 120 gcube of ice at 0°C is dropped into 1.0 kg of water that wasoriginally at 86°C. What is the final temperature of the water after the ice has melted
A ball rolls horizontally off the edge of a 6.5-meter-tall platform. find the speed of the ball when it rolls off the platform
A ball is launched straight up with a speed of 25.05 miles per hour. What is the maximum height reached in meters
a dish of hot food has an emissivity of 0.39 and emits 15 w of thermal radiation. if you wrap it in aluminum foil which
A region of space contains a uniform electric field oriented along the y-axis. How is the plane of second frame oriented with respect to the plane of the first one
0.5 kg mass is exhibiting Counter clockwise UCM on level fric. free table top at the end ofthe string whihc is held in place below a small fric. free holethru which string has been threaded.
Energy is required to move a 1530 kg mass from the Earth’ssurface to an altitude 2.43 times the Earth’s radius RE. The acceleration of gravity is 9.8 m/s2. What amount of energy is required to accomplish this move?
A 1.3 kg block is initially at rest on a horizontal frictionless surface when a horizontal force in the positive direction of an x axis is applied to the block. What is the maximum kinetic energy of the block between x = 0 and x = 2.0 m
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