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A spherical charged shell of radius R1 is concentric with a spherical charged shell of radius R2=2R1. The surface density of outer shell is +4.0 uC/m2. The electric field out of the outer shell is 0. What is the surface density of inner shell?
An insulated Thermos contains 210 cm3 of hot coffee at 88 °C. You put a 19.00 g ice cube at its melting point to cool the coffee. By how many degrees has the coffee cooled once the ice has melted and equilibrium is reached? Treat the coffee as though..
The sensor on the torso of a crash-test dummy records the magnitude and direction of the net force acting on dummy. If the dummy is thrown forward with a force of 130-N while simultaneously being hit from the side with a force of 4500N, what force..
One way to measure on another planet or moon by remote sensing is to measure how long it takes an object to fall a given distance. A lander vehicle on a distant planet records the fact that it takes 3.17 for a ball to fall freely 11.26.
Consider the following fission reaction (1n)+235U --> 90Kr + 142Ba +4(1n) +6 \(\gamma\) where 90Kr and 142Ba are the initial fission fragments. What is the total energy eventually emitted
A car of mass 920.0 kg accelerates away from an intersection on a horizontal road. When the car speed is 41.0 km/hr (11.4 m/s), the net power which the engine supplies is 4300.0 W (in addition to the extra power required to make up for air resista..
An electromagnetic wave in a vacuum has a maximum magnetic field amplitude of 5.67×10?7 T. find the maximum electric field amplitude of the wave
Calculate how long it will take a ball to hit the ground if dropped from a height of 44 m,
A helium gas cylinder has a pressure of 28 atm. What fraction of the original amount of helium remains in the cylinder
A scaffold that weighs 275N supports two painters, one weighing 150N and the other weighing 325N, What should the reading on the right scale be
A 320 kg rocket sled can be accelerated at a constant rate from rest to 1400 km/h in 2.0 s. What is the magnitude of the necessary net force.
A 500- kg ice boat moves on runners on essentially frictionless ice. A steady wind blows, What was the force due to the wind
A U-shaped tube is filled mostly with water, but some vegetable oil has been added to both sides of the U tube. Find the difference in fluid level between the two sides of the tube
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