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A champion archer hits a bullseye in a target mounted on a wall a distance L away and situated at a height h above his bow. Deduce the equation between the speed (at which the arrow left his bow), the arrow's initial angle θ with the horizontal, the height, and the distance of the target (whose solution the archer evidently knew. Neglect air resistance).
A concrete highway curve of radius 80.0m is banked at a 19.0 degree angle. What is the maximum speed with which a 1500kg rubber-tired car can take this curve without sliding
Air that initially occupies 0.16 m3 at a gauge pressure of 100 kPa is expanded isothermally to a pressure of 101.3 kPa and then cooled at fix pressure until it reaches its initial volume. Estimate the work done by the air
A 3.0 μC charge is located at x=0 and a -2.0 μC is located at x=6 centimeter. Find at what points along the line joining them is the electric field zero
A 12 Volt battery remains connected to a parallel plate capacitor with a plate area of 0.294 m2 and a plate separation of 5.24 millimeter. Obtain the electric field between its plates
a long straight wire with radius r carries electric current i uniformly distributed over the cross section of the
You see the boy next door trying to push a crate down the sidewalk. He can barely keep it moving, and his feet occasionally slip. Estimate the mass of the crate
In a hydraulic lift, the maximum gauge pressure is 18.5 atm. If the diameter of the output line is 18.7 cm, what is the heaviest vehicle that can be lifted
A hiker plans to swing on a rope across a ravine in the mountains, as illustrated below L=6 meter and X=2.8, Find at what minimum horizontal speed should she be running when she starts to swing
A steel section of the Alaskan pipeline had a length of 63.8 mand a temperature of 21.8 °C when it was installed. What is itschange in length when the temperature drops to a frigid -46.6°C?
Two physical pendulums (not simple pendulums) are made from meter sticks that are suspended from the ceiling at one end. Determine the period of the wood pendulum
for a particle in a cubical box and in its ground state given an accurate estimate of the probability for finding the
A scuba diver is 40 m below the surface of a lake, where thetemperature is 5 degrees C. He releases an air bubble with avolume of 15 cm^3. What is the volume of the bubbleright
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