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Question: A metal surface illuminated by 8.5 x 1014 Hz light emits electrons whose maximum energy is 0.52eV. The same surface illuminated by 12.0 x 1014 Hz hight emits electrons whose maximum energy is 1.97eV. From these data find Planck's constant and the work function of the surface.
two point charges q and 2q lie on the x-axis . which regions on the x-axis include a point where the electric field due to the two point charges is zero?
What was the speed of the car when the brakes were applied.
The four tires on the author's car are inflated to an absolute pressure of 2.8 multiply.gif 105 Pa.what is the contact area between each tire and the ground
a pitcher delivers a fast ball with a velocity of 43 m/s to the south. the batter hits the ball and gives it a velocity of 51 m/s to the north. what was the average acceleration of the ball
How many excess electrons must be added to an isolated spherical conductor of diameter 38.0cm to produce an electric field of 1105N/C just outside the surface
A driver in a car travelling at a speed of 58.0 mi/h sees a deer 126 m away on the road. Calculate the minimum constant acceleration that is necessary for the car to stop without hitting the deer (assume that the deer does not move in the meantime).
Two large identical flat metal plates are placed parallel to one another, seperated by a small distance compared to their linear size. One plate is given a charge per unit area 2.50E-5 C/m2 and the other a charge per unit area -2.50E-5 C/m2. Using..
A box of mass 5 Kg is connected by a massless rope to a 10.0 Kg. A force of 60.0 N is applied to the 5 Kg. What is the tension in the rope connecting the 2 masses
a bullet of mass m traveling with velocity v strikes and lodges in a wooden block of mass m. the block is initially at
Two 20 microfarad capacitors are wired in parallel with each other in series with a single 5 ohm resistor. What is the maximum energy stored in the capacitor
The nucleus of 8Be, which consists of 4 protons and 4 neutrons, is very unstable and spontaneous breaks into two alpha particles, what is the force between the two alpha particles when they are 7.00 x 10^-15 m apart
You need to make a series ac circuit having a resonance angular frequency of 1600 rad/s using a 148 ohm resistor, a 10.9 uf capacitor, and an inductor. What should be the inductance of the inductor
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