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Use the ideal gas as a model to estimate the rms speed of a free electron in a metal at the following temperatures.
a) 273 K
b) 2700 K (a typical temperature of the cathode in a CRT).
A recording engineer works in a soundproofed room that is 45 dB quieter than the outside. If the sound intensity in the room is 1.30 x10-10 W/m2, what is the intensity outside.
A rubber ball is dropped from a distance of 1.40 m above ground and bounces to 60% of its original height. how long is the ball in contact with the ground
You connect five identical resistors in series to a battery whose EMF is 12.0 V and whose internal resistance is negligible. obtain the potential difference across each resistor
A projectile is launched from a cliff 10 m high at a velocity of 40m/s in such a direction as to strike the top of a 30 m tower 100 m away in 2.951 seconds. Calculate the value of the angle
In the Bohr theory of the hydrogen atom, an electron,oves in a circular orbit about a proton, where the radius of the orbit is 9.51 A. find the electrostatic force between the two
Two identical metallic blocks are connected by a light spring having the spring constant 100 N/m and an unstretched length of .30 m. A total charge Q is slowly placed on the system, causing the spring to stretch to an equilibrium length of .40 m. ..
In a diesel engine, the piston compresses air at 302 K to a volume that is 0.0623 of the original volume, What is the temperature of the air after the compression
A box starts out at the top of a frictionless ramp, then slides down. The ramp has a height h = 3 meters and a slope of 5 degrees with respect to the ground. What does this make the velocity of the box at the bottom
A modified oscilloscope is utilized to perform an electron interference experiment. Electrons are incident on a pair of narrow slits 0.0720 µm apart. The bright bands in the interference pattern are separated by 0.400 mm on a screen 24.0 cm from the ..
A satellite in a circular orbit around the planet Glob-IV has an orbital period of 246 minutes. Find the height of the satellite above the planet's surface
Throughout liftoff, a hot-air balloon accelerates upward at a rate of 3m/s^2. The balloonist drops an object over the side of the gondola when the speed is 13m/s.
the potential in cylindrical coordinates is given as V(r,φ)= (100/r)sin(3φ). Find Where is the location of zero voltage? Find electric field intensity for all points.
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