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An electron in an oscilloscope tube is traveling horizontally with a speed of 4.1×106m/s . It passes through a 2.0cm long region with an electric field pointing upward by a magnitude of 1700N/C .
1. What is the magnitude of the electron’s velocity when it emerges from the electric field region?
2. What is the direction of the electron’s velocity when it emerges from the electric field region?
Find the critical angle of total internal reflection from glass with refraction index n = 1.51 into air
A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1230 Hz. The bird-watcher, however, hears a frequency of 1260 Hz. What is the speed of the bird, expressed as a percentage of the speed of sound?
Model rocket engines are sized by thrust, thrust duration, and total impulse, among other characteristics, What is the average exhaust speed of the engine
A rectangular plate has a length of (20.4 0.2) cm and a width of (8.7 0.1) cm. Calculate the area of the plate
A 0.70 kg iron horseshoe is taken from a forge at 900°C and dropped into 3.00 kg of water at 13.0°C. find the total entropy change of the horseshoe-plus-water system
Through one engine cycle, a lawnmower engine does 55.2 J of net work. In the process, it expels 153 J of energy as heat. Determine what is the percent efficiency of the engine?
A 60 kg woman in an elevator is accelerating upward at 1.2 m/s^2. what is the normal force pushing upward on her feet
A straight 2.30 wire carries a typical household current of 1.50 (in one direction) at a location where the earth's magnetic field is 0.550 gause from south to north. Find the magnitude of the force that our planet's magnetic field exerts on this c..
A 3.9×10-24-kg particle is vibrating with simple harmonic motion with a period of 1.8×10-5 s and a maximum speed of 1.70×103 m/s. Find the maximum displacement of the particle
At its narrowest point the femur bone in the human leg resembles a hollow cylinder that has an outer radius of roughly 1.1 cm, how much force will be required to rupture it
A certain part of aircraft engine has a volume of 1.3ft3. Find the weight of the piece when it is made of iron
The lowest pedal note on a particular large pipe organ has a fundamental frequency of 15.7 Hz. What is the length of pipe between the sounding hole and the open end
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