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An electron moves from point i to point f, in the direction of a uniform electric field of magnitude 9.22 x 106 Vm . The initial and final points are 1.12 cm apart. What is the change in potential energy of the electron?
A raindrop falls at a constant speed. How much work is done byair resistance as the drop falls 250 m? (The raindrop's mass is 3 x10^-5 kg)
What is the direction of the electric field at the position indicated by the dot in the figure? Specify the direction as an angle above the horizontal line.
A ladder is leaning against a vertical wall. The coefficient of friction between the ladder and the horizontal surface is u1=1.265, Determine the maximum angle with the vertical the ladder can make
An electron in a cathode-ray-tube (CRT) accelerates uniformly from 2.00*104 m/s to 6.00*106 m/s over 1.00 cm. What is its acceleration?
Two lenses that are L = 42 cm apart are used to form an image, as shown in figure. Find the distance from lens and magnification of the image.
Three moles of nitrogen gas, N2, at 27.0°C are contained in a 25.8 L cylinder. Find the pressure the gas exertson the cylinder walls
The coeffiecient of static friction between Jimmy's hand and his tennis racket is 0.45. How hard must he squeeze the racket if he wants to exert a force of 200 N along the longitudinal axis of the racket
The magnitude of the Poynting vector of a planar electromagnetic wave has an average value of 0.939 W/m2. How much total electromagnetic energy falls on the area during 1.0 minute
a uniform electric field is established by connecting the plates of a parallel-plate capacitor to a 12-v battery. the
A mass of 0.25 kilogram, hanging from a spring with a spring constant of 25 N/m, is set into an up-and-down simple harmonic motion. Find the speed of the mass
q1. a ball in flight is recorded and analyzed using digital video analysis software. the analysis produced the result
A stent is cylindrical tube, often made of metal mesh, hats inserted into a blood vessel to overcome a constriction. It’s sometimes necessary to heat the stent after insertion to prevent cell growth that could cause constriction to recur.
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