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Question: The light intensity incident on a metallic sur- face with a work function of 2.03 eV produces photoeletrons with a maximum kinetic energy of 3.95 eV.
If the frequency of the light is doubled, what is the maximum kinetic energy of the photoeletrons?
A very long, straight wire has charge per unit length (lambda) . At what distance from the wire is the electric field magnitude equal to E ? How do you solve this problem?
A uniform 210N ladder rests against a perfectly smooth wall, making a 40.0 degrees angle with the wall. Find the normal forces that the wall exert on the ladder
A submarine (sub A) travels through water at a speed of 10.00m/s, emitting a sonar wave at a frequency of 1500 Hz. find the sound velocity in this water
uniform thin rod of length L=2.5 m and mass 2 kg can rotate in a horizontal plane about a vertical axis through its center. what is the angular velocity of the rod immediately after the collision
A worker on the roof of a house drops his 0.55 kg hammer, which slides down the roof at constant speed of 4.93m/s. What is the horizontal distance traveled by the hammer from the time it leaves the roof to the time it hits the ground
A playground merry-go-round of radius R = 1.20 m has a moment of inertia I = 265 kg · m2, What is the new angular speed of the merry-go-round
A 250 g block of wood hangs from a light string 0.78 m long. The block is shot with a bullet of mass 4.2 g, what was the velocity of the bullet just before it hit the block
What is the change in Marys potential energy. Find the final speed of the particle.
An airplane is flying in a horizontal circle at a speed of 520 km/h. If the wings of the plane are tilted 34° to the horizontal, what is the radius of the circle (in m) in which the plane is flying
With the switch in position A, the capacitor becomes charged. After a long time, the capacitor charge approaches q = C ?. Determine the energy of the capacitor U(t) as a function of time t
What is the combined contact force on the log by ropes 1 and 2? In this case, give your direction in terms of an angle in degrees measured counterclockwise (CCW) from the Easterly direction. The angle may be anything between 0 and 180 degrees.
A construction worker uses a steel tape to measure the length of an aluminum support column. what is the measured length when the temperature rises to 29.4°C
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