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In the steady state 1.8 1018 electrons per second enter bulb 1. There are 6.3 1028 mobile electrons per cubic meter in tungsten. The cross-sectional area of the tungsten filament in bulb 1 is 1 10-8 m2. The electron mobility in hot tungsten is 1.2 10-4 (m/s)/(N/C). Calculate the magnitude of the electric field inside the tungsten filament in bulb 3. V/m
The first person is initially moving forward with a speed of 2.5m/s and second person is initially at rest. What are the velocities of the two people after the snowball is swapped? Disregard friction between the skate and the ice.
q1. a hydrogen atom has a diameter of around 1.05times10-10 m as defined by the diameter of the spherical electron
A rifle is aimed horizonatally at a target 50 m away. The bullet hits the target 2.0cm below the aim point. what was the bullets speed as it left the barrel
An ac generator with a frequency of 135Hz and an rms voltage of 20.5V is connected in series with a 11.0 kOhms resistor, What is the rms current in this circuit
There is a charge of -3e locked down at a point on a table. 15 meters away, a charge of 3e is released from a scientists hand. What is the potential energy of the charge just as it is released from the scientists hand
Green light at 532 nm lights a diffraction grating with 800 lines per cm. Diffraction pattern is on screen 7.5m away. Calculate distance between the diffraction peaks on the screen
A hunter on a frozen, essentially frictionless pond uses a rifle that shoots 4.20 g bullets at 975 m/s. The mass of the hunter (including his gun) is 68.5 kg, and the hunter holds tight to the gun after firing it. a) Find the recoil velocity of the h..
It is 170cm from your eyes to your toes. You're standing 230cm in front of a tall mirror. How far is it from your eyes to the image of your toes
Three charged particles are placed at each of three corners of an equilateral triangle whose sides are of length 4.0 cm. What is the net electric force acting on particle 3
A solid ball encounters a 0.760 m vertical rise on the way back to the ball rack. Find the translational speed at the top
Starting from rest, a 12 cm diameter compact disk takes 3.0s to reach its operating velocity of 2000 rpm. Assume angular acceleration is constant. How much torque is applied to the disk
The original Ferris wheel, built by George Ferris, had a radius of 38 m and a mass of 1.9 X 106 kg. What force exerted on the rim of the wheel would have given such a torque
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