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A solid sphere of radius a=10cm is concentric with a spherical conducting shell of inner radius b=20cm and outer radius c=24cm. The sphere has a net uniform charge q1=+10μC; and conducting shell has a net charge q2=-10μC. Please calculate the magnitude of the electric field at radial distances
(a) r=5cm
(b) r=21cm
(c) r=30cm
If the engine absorbs 141.0 kcal of heat from the hot reservoir, how much does it exhaust to the cold reservoir
a 5 litre pressure vessel contains 200g of propane. using the peng robinson eos calculate the pressure in the vessel
Mark and Clark are identical twins at the amusement park riding on the bumper cars. Both boys have the same mass, 85kg. The cars are identical with a mass of 120 kg.
A violin string 12.5 cm long and fixed at both ends oscillates in its n = 5 mode. The speed of waves on the string is 268 m/s, and the speed of sound in air is 348 m/s. What are (a) the frequency and (b) the wavelength of the emitted sound wave?
The space shuttle makes 1 revolution around the Earth in 1.5 hours when it is in an orbit 200 km above the Earth's surface. what is the radius of the new orbit
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In a tennis serve, a 0.070 kg ball can be accelerated from rest to 36 m/s over a distance of 0.75 m. Find the magnitude of the average force exerted by the racket on the ball
Air at 25 oC blows over a heated steel plate with its surface maintained at 200 oC. Calculate the heat loss per hour from the top surface of the plate
A 5.0-kg mass starts from rest and accelerates to a velocity of 8.0 m/s in a time of 10.0 seconds. Calculate the force that is acting on the mass
Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. What is the period of a satellite in a geosynchronous orbit
What is effectiveness of battery as an energy storage device
A diatomic molecule is excited to its first rotational energy level, corresponding to J = 1. what is the angular speed of the molecule about its center of mass
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