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The work needed to remove an electron from the surface of sodium is 2.3 eV. Dind the maximum wavelength of the light that will cause photoelectrons to be emitted from sodium. How big maximal velocity will have electrons if the surface of sodium will be illuminated with ultraviolet light wave length (wavelengt 400 nm)?
Presume you carry a bag of groceries weighing 148 N from your car to the kitchen, a distance of 59m, without raising or lowering the bag.
A standing wave on a 75.0cm long string has three antinodes. The Wavelength is .50m. If the string has linear mass density 3.78×10?5kg/m and tension 10.5N , what are the wave's frequency
The microwave radiation left over from the Big Bang explosion of the universe has an average energy density of 3.88 Ã- 10â€"14 J/m3
An electron in a television picture tube has a classical kinetic energy of 60 keV, which is the kinetic energy that Newton would calculate using the measured speed, What is the actual kinetic energy of the electron
The nucleus of a hydrogen atom is a single proton. The radius of a proton is approximately 1 fm. What is the approximate volume of a proton
In what direction should the pilot travel in this direct flight. Find out the distance she walks.
If you have five capacitors with capacitances 1.2×10-6 F, 3.2×10-6 F, 5.9×10-6 F, and two 6.4×10-6 F in series, What is the equivalent capacitance of all five
A meter stick lies on the bottom of a 100 cm long tank with its zero mark against the left edge. You look into the tank at a 30 angle, with your line of sight just grazing the upper left edge of the tank.
An infinitely long line of charge has linear charge density 5.00 x10-12 C/m. A proton (mass 1.67 x10-27 kg, charge +1.60 x10-19 C) is 18 cm from the line and moving directly toward the line at 1.50 x103 m/s. How close does the proton get to the li..
If the coefficient of static friction is 0.951, illustrate what is the maximum speed that the car can take without skidding?
A projectile is red from level ground at an angle of 30 degree above the horizon. It hits the ground at t = 4 s. What is the magnitude of the initial velocity, v?
A potential difference V is applied to a wire of cross section A, length L, and resistivity ?. You want to change the applied potential difference, What should be the new values of L and A in terms of the old values
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