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Electerons and protons each with energies of 0.4 eV are incident on a square barrier 3 eV high and 0.1 nm wide. Compute the transmission coefficient for penetration of the barrier for the electrons and the protons?
An electric vehicle starts from rest and accelerates at a rate of 1.8 m/s2 in a straight line until it reaches a speed of 29 m/s. How far does the vehicle move from start to stop
Bulb of resistance 10 ohm, connected to an inductor of inductance L is in series with ac source marked 100 V %u2013 50 Hz. Calculate the value of L
If the radius of a pipe is reduced from 2.87 m to 0.75 m along the direction of a gas flow, how many times does the speed of gas flow increase
A 1700kg car drives around a flat 200m -diameter circular track at 24m/s, What is the magnitude of the net force on the car
Andy, age 16, lacks self-discipline, fails to plan ahead, and is rapidly frustrated by challenging tasks. He is nervous and overly critical of others. Make use of the psychoanalytic, humanistic and social-cognitive perspectives to give three contr..
A mass of 0.32 kg, attached to a spring with a spring constant of 73.0 N/m, is set into simple harmonic motion. What is the magnitude of the acceleration of the mass
When red light in a vacuum is incident at the Brewster angle on a certain type of glass, the angle of refraction is 31.0°. What is the Brewster angle
a car is moving with speed 16.6 ms due south at one moment and 29.3 ms due east 9.00 seconds later. determine the
How far should you place the lens from the slide. Express the direction as an angle with respect to the +x axis.
A net force of 30 N accelerates a 6 kg mass over a distance of 12 m. What is the work done by this net force
a small coil has a cross section of 5.5 cm2 and consists of 18 turns of wire. if the loop carries a current of 100 ma
A ball of mass 10.7 g with a speed of 27.1 m/s strikes a wall at an angle 24.0o and then rebounds with the same speed and angle. calculate the average force exerted by the ball on the wall
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