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When the wavelength of an incident radiation exceeds 560nm the emission of photoelectrons from a surface ceases.
What is the maximum energy of the electrons emitted when the surface is irradiated with. electromagnetic waves of wavelength 420nm?
What is the stopping potential for this electrons?
A planet can have an atmosphere if the escape speed of the planet is 6 times larger than the thermal speed of molecules in the atmosphere. What is the radius of this object's orbit around the sun
An iron-core solenoid is 43cm long and 1.7cm in diameter, and has 720 turns of wire. What is the permeability %u03BC at this high field strength
Fleas have remarkable jumping ability. A 0.55mgflea, jumping straight up, would reach a height of 40cm if there were no air resistance. What is the flea's kinetic energy as it leaves the ground
q1. a 36.0 g bullet moving at 478 ms strikes a 3.7 kg bag of flour that is on ice at rest. the bullet passes during the
In a very busy off-campus eatery one chef sends a 239-g broccoli-tomato-pickle-onion-mushroom pizza sliding down the counter from left to right at 1.79 m/s. n what direction does the delectible dish move, if it moves at all
a 0.400 ice puck moving east with a speed of 2.50 has a head-on collision with a 0.900puck initially at rest. what
Gas is confined in a tank at a pressure of 1.04E+6 Pa and a temperature of 14.4°C. what is the new pressure in the tank
Two trains, each having a speed of 28 km/h, are headed at each other on the similar straight track. A bird that can fly 56 km/h flies off the front of one train, when they are 66 km apart and heads directly for the other train. On reaching the other ..
Suppose you are on Mars, where the free-fall acceleration is just 3.7 m/s^2. How far can you hit a golf ball with your club from a 300 meter elevated cliff, How long will the ball fly before hitting the ground
A crate of 45.2-kg tools rests on a horizontal floor. You exert a gradually increasing horizontal push on it and observe that the crate just begins to move when your force exceeds 310N. find the coefficient of static friction between the crate and ..
A piece of cheese with a mass of 1.30kg is placed on a vertical spring of negligible mass and a force constant k= 1600 N/m that is compressed by a distance of 16.2cm. how high does the cheese rise from this initial position
A hollow sphere of radius R has a potential on its surface specified by the function V(R,θ) = Vocos2θ. Find the electric potential inside and outside the sphere
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