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Blue light of frequency 6.0 1014 Hz falls on the surface of potassium, which has a work function of 2.26 eV. Find the maximum kinetic energy of emitted electrons.
The length of a simple pendulum is 0.77 m and the mass of the particle (the "bob") at the end of the cable is 0.25 kg. What is the angular frequency of the motion
A 50.0-g object is attached to a horizontal spring, What is the velocity of the object when it is halfway to the equilibrium position if the surface is frictionless
Sketch the shear force and bending moment diagram and Verify that the support reactions are correct.
A speeder passes a parked police car at 30 m/s. At that instant, the police car starts from rest with a uniform acceleration of 2.44 m/s2.
An ideal spring with a spring constant of 25.0 N/m is suspended vertically. A 1.00 kg object is attached to the unstretched spring and released. It then performs oscillations in the form of simple harmonic motions. Determine the magnitude of the o..
On a horizontal frictionless surface, a small block with mass 0.200 kg has a collision with a block of mass 0.400 kg, What is the total kinetic energy of the two blocks after the collision
question1the ozone concentration in an atmosphere is measured in dobson units. we say that the amount of ozone is 1 du
A man is riding on a flatcar traveling at a constant speed of 9.10, When the ball leaves the man's hands, what is the direction of its velocity relative to the frame of reference of the flatcar
A red ball is thrown down with an initial speed of 1 m/s from a height of 27 meters above the ground. How long does it take the red ball to reach the ground
The average intensity of sunlight reaching the earth is 1390 W / m2. A charge of 2.00 x 10^-8 C is placed in the path of this electromagnetic wave. What is the magnitude of the maximum electric force that the charge experiences
Two 2.3-cm-diameter electrodes with a 0.10-mm-thick sheet of Teflon between them are attached to a 9.0 battery. What is the charge before the Teflon is removed
A person wearing the shoes has a mass of 65kg. Estimate the pressure exerted on a floor by one wide heel of area 16 cm2
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