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the intensity of laser light of 620 nm wavelength incident on a solid surface with a work function of 0.5 ev is doubled. By what factor does the kinetic energy of the electrons increase?
A +6.4 µC charge is placed at the origin and a -3.3 µC charge is placed at x = 25 cm. At what coordinates can a third charge be placed
Consider a conical pendulum with a bob of mass m=82.0 kg on a string of length L=10.0 m that makes an angle of theta=8.00 degrees with the vertical, Determine the radical acceleration of the bob.
a block, m= 3 kg, slides on a frictionless horizontal surface.It then goes up a 15 degree incline having a coeffecient offriction uk=0.30 a distance L before stopping. find the acceleration of the block on the plane
question1a hollow sphere of radius 0.15 m with rotational inertia 1 0.040 kgm2 about a line through its center of mass
The upward velocity of the 5 kg block is v1 = 3 m/s when it is at a height ht = 10 m from the sandy surface. Determine time to stop the motion of the block if the average impulsive force acting on the block
A woman with mass 49.5 kg is standing on the rim of a large disk that is rotating at 0.490 rev/s about an axis perpendicular to it through its center. Calculate the magnitude of the total angular momentum of the woman-plus-disk system
For a simple harmonic oscillator with k = 4.0 N/m and A = 0.75 m, the time between maximum velocity and maximum acceleration is 2.50 s. (a) what's the oscillation period? (b) What's the mass? (c) find the maximum velocity and maximum acceleration.
An athlete has a large lung capacity, 7.0 L. Assuming air to be an ideal gas, how many molecules of air are in the athlete's lungs
Two beads slide along a straight, frictionless wire. The first has a mass of 0.5 Kg and a velocity of 5m/s moving to the left. They collide and stick together, moving as one object. A)Find the magnitude and direction of the velocity of the beads a..
Imagine that in a certain proton accelerator, roughly 1011 protons at a time go around a ring having a radius of 4.0 km, What is the current flowing in the ring, in amperes
A 200 g ball on a 55-cm-long string is swung in a vertical circle about a point 200 cm above the floor. What was the tension in the string an instant
a very long coaxial cable consists of a solid cylindrical inner conductor of radius 4mm surrounded by an outer
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