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Light of frequency 1.26 × 1015 Hz illuminates a sodium surface. The ejected photoelectrons are found to have a maximum kinetic energy of 2.94 eV. Calculate the work function of sodium. Planck's constant is 6.63 × 10-34 J · s.
In slow pitch softball the underhand pitch must reach a maximum height of between 1.8 m and 3.7 m above the ground. A pitch is made with an initial velocity v0 of magnitude 13 m/s at an angle of 33° with the horizontal. Determine
Calculate the wavelength of light in vacuum that has a frequency of 7.8 108 Hz. and What is its wavelength in carbon tetrachloride
The terminals of a generator are connected to inductors. Inductor 1 is equal to 30.0 mH and the second inductor has a value of 60.0 mH. What is the value of the third inductor
Another particle, of mass 8.46 10-27 kg, moves along the x axis with a speed of 4.00 106 m/s. (a) Find the velocity of the third particle. ( i hat + j) (b) Find the total kinetic energy increase in the process.
A beaker of mass m-beaker containing oil of mass m-oil (density = p-oil) rests on a scale. A block of iron of mass m-iron is suspended from a spring scale and completely submerged in the oil. Determine the equilibrium readings of both scales.
A block of mass m is at restlying on the face of an incline plane.Theplane makes an angle (theta) with the horizontal. Draw the free-body diagram showing all forces acting on theb lock.
A small drop of water is suspended motionless in air by a uniform electric field that is directed upward and has a magnitude of 10200 N/C. How many excess electrons or protons reside on the drop
The primary coil of a transformer makes 40 turns around the iron core and the secondary coil of that transformer makes 600 turns. what is the secondary voltage
Darius the dare devil plans to launch his rocket carat the top a ramp inclined at 20.0 degrees to the horizontal over apit of fire 20 m in diameter, unfortunately the rocket motor failsat the foot of the ramp, when his speed is 12.6 m/s.
q1. an automobile with a mass of 1340 kg has 3.00 m between the front and rear axles. its center of gravity is located
An oscillating LC circuit consistingof a 2.0 nF capacitor and a 3.8 mH coil has a maximum volatage of6.0 V. What is the maximum current through the circuit
The same potential difference is applied across two wires. wire A carries half the current of wire B. If the resistance of wire B is r, what is the resistance of wire A
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