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An Olympic long jumper is capable of jumping 8.0 meter. Suppose that his horizontal speed is 9.2 m/s as he leaves the ground and that he lands standing upright-that is, the same way he left the ground. Find how long is the jumper in the air? Determine how high does the jumper go?
A 184.0 g piece of lead is heated to 80.0oC and then dropped into a calorimeter containing 681.0 g of water that initally is at 18.0oC
The power is off for 34.0 s and throughout this time the flywheel slows as a result of friction in its axle bearings. Throughout the time the power is off, the flywheel makes 180 complete revolutions.
In an experimental set-up, where a wire with a linear mass density of 1 g/m was clamped at one end, at what frequency would you need to vibrate the wire
A 821 kg car is going 29 m/s and the driver has to slam on his brakes to prevent an accident. what is the change in temperature of the brake pads and rotors
When the space between two parallel plates is devoid of matter, the capacitance is .47 micro farrads. The dielectric constant is
The loaded cab of an elevator has a mass of 3.0 x 10^3 kg and moves 145 m up the shaft in 23 s at constant speed. At what average rate does the force from the cable do work on the cab.
A 2-2-2 kinematic coupling uses 19-mm silicon nitride balls and tungsten carbide vees. Determine the Hertz contact stresses for a 50 N coupling load. Is this kinematic coupling overloaded? Where are the locations of maximum compressive, shear and ten..
a particle of mass 6kg traveling with speed 4m/s in the direction 30 degrees S of W on a horizontal plane suddenly shoots one-third its mass in the north direction with speed 5.5 m/s
A shuttle with a mass of 18,000 kg is traveling at 6,750 m/s when retrorockets are fired to increase the shuttle's speed. What is the final speed of the shuttle after the engines shut down
A long, thin rod (length = 4.5 m) lies along the x axis, with its midpoint at the origin. find the magnitude of the net torque applied to the rod
The magnetic field in a Stern-Gerlach experiment varies along the vertical direction as dBz/dz = 20 T/cm. The horizontal length of the magnet is 7.1 cm and the speed of the silver atoms averages 925 m/s. The mass of the silver atoms is 1.8 x 10^-2..
three vectors a b and c each have a magnitude of 50m and lie in the x-y plane. their directions relative to the
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