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The wave length associated with the cutoff frequency for silver is 325.0 nm. Find the maximum kinetic energy of the electrons ejected from the silver surface by ultraviolet light of wavelength 222.0 nm? (eV)
Given a capacitor whose plates measure 15cm by 3.7 cm and are separated by a 2.2mm air gap. Calculate he maximum amount of energy which can be stored in the capacitor under these conditions
q1. a 0.48 kg object is attached to a spring with a spring constant 178 nm so that the object is authorized to move on
In a head-on collision, a car stops in 0.17s from a speed of 30m/s . The driver has a mass of 78kg, What force is applied to the driver by his seat belt during that fraction of a second
An object with a mass of 5.10 kg is attached to the free end of the lightstring wrapped around a reel radius R=0.25 m and mass 3kg the reel is a solid disk, free to rotate in a vertical plane about the horizontal axis paasing through its center th..
Copper at 20C has a resistivity of 1.72x10^-8 ohm-m. A potential difference of 2.0V is applied to a 1.00m long copper wire of radius 0.200mm. Find the resistance of the wire
Under controlled darkened conditions in the laboratory, a light receptor cell on the retina of a person's eye can detect a single photon of light of wavelength 505 nm, What is the intensity (in W/m^2) delivered to a rod
How do you measure the mass of an astronaut in orbit? (You can't just use a scale!) For the Skylab program, What is the mass of the astronaut
What is the center of gravity? How can you find it in various objects? How dooes it effect the equilibrium of an object, What are the types of stability
A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 10.9 m/s due north relative to the water. If the river is 362 m wide, explain how far downstream is the boat when it reaches the north shore?
Suppose the slope of a beach underneath the ocean is 20 cm of dropoff for every 1.6 m of horizontal distance. A wave is moving inland, slowing down as it enters shallower water. What is its acceleration when it is 11 m from the shoreline?
A coil of wire with 217 circular turns of radius 3.20cm is in a uniform magnetic field along the axis of the coil. The coil has R = 41.5?, calculate the average emf induced in the coil
Light moving from glass to air changes wavelength from 448.5 nm to 653.7 nm. find the frequency of the light in air
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