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A bungee jumper with mass 56.5 jumps from a high bridge. After reaching his lowest point, he oscillates up and down, hitting a low point eight more times in 37.2 . He finally comes to rest 22.5 below the level of the bridge. Calculate the spring stiffness constant and the unstretched length of the bungee cord.
A solenoid of radius 2.4 cm has 420 turns and a length of 16 cm. Find the rate at which current must change
Io, a satellite of Jupiter, has an orbital period of 1.77 days and an orbital radius of 4.22 105 km. From these data, determine the mass of Jupiter
Near Earth, the density of protons in the solar wind (a stream of particles from the Sun) is 12.8 cm-3, and their speed is 615 km/s. Find the current density of these protons
A flask with a volume of 2.40L , provided with a stopcock, contains ethane gas (C2H6) at a temperature of 284 K and atmospheric pressure 1.013×105 Pa. What is the final pressure of the ethane in the flask
Three charges are on the y-axis. Two of the charges, each ?2q, are locatedy=±d, and the third charge, +4q, Derive an expression for the electric field at a point P on the x-axis
At a party,3.00kg of ice at-4.20°C is added to a cooler holding 30 liters of water at 20.0°C. What is the temperature of the water when it comes to equilibrium
An electron is released from rest at the negative plate of a parallel plate capacitor. The charge per unit area on each plate is = 1.6 x 10-7 C/m2, and the plates are separated by a distance of 1.3 x 10-2 m. How fast is the electron moving just befor..
You measure the length of a futuristic car to be 3.50m when the car is at rest relative to you. what result do you get
A wire of resistance 9.0 is connected to a battery whose emf script e is 5.0 V and whose internal resistance is 1.0. How much energy appears in the wire as thermal energy in that time
A 4.00-kg mass is connected by a light cord to a 3.0 kg mass on a smooth surface. The pulley rotates about a frictionless axle and has a moment of inertia of 0.50 kg · m2.
how would you calculate many electrons are transferred with each rotation by the van de graff generator? as is known
The space shuttle typically orbits 400 km above the earth's surface. The earth has a mass of 5.98 × 1024 kg, Use your knowledge of gravitation to determine the orbital speed of the shuttle's cargo
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