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A football punter wants to kick the ball so that it is in the air for 3.7s and lands 45m from where it was kicked. Suppose that the ball leaves 1.0 m above the ground.
Part A
At what angle must the ball be kicked?
Part B
With what initial speed must the ball be kicked?
A space station is constructed in the shape of a hollow ring of mass 6.00 x 10^4 kg and radius 130 m. how much work is done to get the space station spinning
Neptune is an average distance of 4.50 x 109 kilometer from the Sun. Find the length of the Neptunian year given that the Earth is 1.50 x 108 kilometer from the Sun on the average
A convex mirror has a radius of curvature of 89 cm. An image is produced 40 cm in front of the mirror. Where is the object
A 3.3 kg block, initially in motion, is pushed along ahorizontal floor by a force F of magnitude 17 N at an angle 45degrees with the horizontal. The coefficient of friction betweenthe block and the floor is .25.
You are given a parallel plate capacitor that has plates of area 4.00 m2 which are separated by 0.0100 mm of nylon, Calculate what the applied voltage in kV should be for this capacitor
A uniform electric field of magnitude 430 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 3.60 cm. find the work done by the field on the electron
Three resistors of 40 ohms, 60 ohms and 100 ohms connected on a close circuit with 200 Volt source (assume ideal circuit). With Resistors connected in Parallel: determine the voltage drop across each resistor
A grandfather's clock is calibrated at a temperature of 20 C. The pendulum is a thin brass rod with a heavy mass attached to the end. On a hot day, when the temperature is 30 C, does the clock run fast or slow? How much time does it gain or lose i..
the large swimming pool has a thermal cooling time constant of 12 days. how long will it take for the water temp. to
A river barge loaded with gravel approaches a low bridge that it cannot quite pass under. Find should gravel be removed from or added to the barge
A spring has a spring stiffness constant, K, of 430 N/m. Find how much must this spring be stretched to store 50 Joule of potential energy
How much energy is required to move a600kg object from the Earth's surface to an altitude twice the Earth's radius
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