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A projectile is fired at an upward angle of 45° from the top of a 242 m cliff with a speed of 208 m/s. What will be its speed when it strikes the ground below? (Use conservation of energy.)
Calculate the force exerted on a rocket, given that the propelling gases are expelled at a rate of 1400kg/s with a speed of 7.1×104m/s
An airplane has a mass of 20,000 kg and takes off under the control of a constant net force of 30,000 N. What is the net force that acts on the plane's 73 kg pilot.
A baseball thrown off a pedestrian pathway, 36 m above the Erie Canal, What is the range of the baseball
A 0.32-kg object connected to a light spring with a force constant of 22.4 N/m oscillates on a frictionless horizontal surface. Determine the maximum speed of the object
A 60.0g ice cube can slide without friction up and down a 33.0 slope. what distance will it travel up the slope before reversing direction
A LASIK vision correction system uses a laser that emits 10 -long pulses of light, each with 2.5 of energy. The laser is focused to a 0.90 -diameter circle. What is the average power of each laser pulse
A parallel circuit forms the tuning circuit for an AMradio. If the inductor has a value of 8.7×10-6 H,what must be the maximum C value of the variable capacitor if theradio receives frequencies from 650k Hz to 1690k Hz?
A block is in equilibrium on a frictionless incline plane due to a tension force from a string that is wrapped around a pulley, find the masses m1 and m2 of the blocks
A 0.481 kg metal cylinder is placed inside the top of a plastic tube, the lower end of which is sealed off by an adjustable plunger, what is the initial acceleration of the metal cylinder
A container ship leaves port A and heads due west with an average speed of 18.0 knots (1knot=1.852 km/hr). what are its average speed and average velocity
A flat puck with mass M=.10kg is rotated in a circle with radius R=.20 m on a frictionless air-hockey tabletop at constant speed. then what is the weight G=mg of the dangling block
GPS satellites orbit the Earth at an altitude of 12,500 miles. How long does it take these satellites to make a complete orbit of the Earth?
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