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In a photoelectric effect experiment, which metal will have a higher cutoff wavelength (i.e. the wavelength above which no electrons are emitted), silver which has a work function of 4.73 eV or lead which has a work function of 4.14 eV? Explain why.
A rifle can fire a 4.20-gram bullet at a speed of 965 m/s. How much work is done on the bullet
The volume flow rate of the water supplied by a well is 1.53 x10-4 m3/s. The well is 31.8 m deep. Find the pressure difference the pump must maintain
According to recent test data, an automobile travels 0.250 mi in 19.9 s, starting from rest. The same car, when braking from 60.0 mi/h on dry pavement, stops in 146 ft. Find the acceleration of this car when it is speeding up
A ray of light strikes the midpoint of one face of an equiangular (60°-60°-60°) glass prism (n = 1.5) at an angle of incidence of 32.5°. find the angles of reflection at the surfaces
When an object of 180 kg hangs from a cord around light pulley of the cord between point P and the pulley is lenght L = 2.0 m. how many loop will be formed
A woman with a package in her hand is riding in a hot air balloon which is climbing at a constant speed of 8.0 m/s. How long does it take for the package to hit the ground
2. The Horseshoe Falls on the Canadian side of Niagara Falls have water that moves horizontally at 9.0 m/s which then falls 53 m vertically into the Niagara River below. Ignoring any air resistance, at what angle does the falling water enter th..
A magnetic field can force a charged particle to move in a circular path. What is the period of the motion
A 3000 kg lunar lander is in orbit 50 km above the surface of the moon. how much work must the thrusters do
In this problem two moles of an ideal gas at 400 K expand quasi-statically and isothermally from an initial volume of 49.0 L to a final volume of 83.0 L. What is the entropy change of the gas
Find the minimum diameter of an l = 16.3 m long steel wire that will stretch no more than 7.39 mm when a mass of 343 kg is hung on the lower end
A sea lab 5.0 m high is to be designed to withstand submersion to 150 m, measured from sea level to the top of the sea lab. Calculate the pressure on top of the sea lab
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