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A beam of ultraviolet radiation, with frequency of 2.64x1015 Hz is directed on a clean metal surface. The work function of the metal is 3.40 eV. Calculate the maximum kinetic energy for an electron dislodged from the surface by the radiation.
The center of the spherical metal ball of radius R, carrying a negative charge -Q, is located a distance r from the center of a short, thin, neutral copper wire of length L. The induced charges at the two ends of the wire is ±q. Determine the polariz..
A light ray in air enters a glass slab at point A at incident angle theta1 and then undergoes total internal reflection at point B,. What is the maximum value of theta1if the index of refraction of the glass is 1.4? For the ray of light that goes fro..
A series RLC circuit with R = 12.5 omega, L = 56.0 mH and C= 0.022 MuF is driven by an AC generator with voltage amplitude of 10.0V and an adjustable frequency. At what frequncy will the current amplitude from the generator be the greatest? Find th..
A 0.4 guitar string is vibrating in its fundamental frequency. The maximum acceleration of a point at the middle of the string is 8400m/s^2 amd the maximum velocity of that point is 3.80m/s. What is the amplitude of the wave? what is the wave speed..
The stationary siren on a firehouse is sounding at 85 Hz. What is the frequency received by a firefighter racing toward the station with a speed of 108km/h?
You are to design a tungsten filament light bulb that has a power of 60W when it is connected to 120V at which condition its temperature is expected to be 1020C. You have a tungsten wire of diameter 0.05mm. Calculate the length of filament that yo..
An electric point of 6 mill- coulomb is placed in the center of a metallic spherical shell of inner diameter 15 cm and thickness 18 cm. Calculate the electric field at the following distances from the point charge. 10cm, 16cm, 25 cm. The charge is..
Calculate the total number of electrons in a coin of mass of 3.00 grams made of pure copper. Each copper atom has 29 electrons, its atomic weight is 63.5 grams, and density is 8.9 gram / cm^3.
A wire in the shape of a square has sides of 35 cm and a resistance of 8 ohms. the wire is being pulled out of a uniform magnetic field, B=650mT at a speed of 50cm/s. How much force does it take to pull the wire if the speed remains constant.
An asteroid has been discovered revolving around the sun on a circular orbit with radius 4.2 times of the Earth's orbit around the SUN ( about 149.6 million km ). Knowing that it takes the Earth 1 year to complete a revolution, how may years does it ..
Calculate the first-excited state energy (in eV) for an electron in a box (an infinite well) having a width of 0.050 nm
A uniform disk, of mass 2.0kg and radius 45cm, rolls from rest without slipping down an incline of length 35m and slope 30 degrees. find the time needed to reach the bottom of the incline
A series RLC circuit is connected across a 10.0 kHz source. The 1.2 H inductor and 1000 ? resistor are fixed whereas the capacitor is variable. What average power will be dissipated
An electron moving parallel to the x axis has an initial speed of 3.70x10^6 m/s at the origin. Calculate the potential difference between the origin and that point.
To improve the efficiency of the engine, it is decided either to raise the temperature of the hot reservoir by 39 K or to lower the temperature of the cold reservoir by 39 K.
from the scattering of sunlight, J. J. Thomson calculated the classical radius of an electron as having the value 2.82 ×10-15 m. Sunlight with an intensity of 500 W/m2 falls on a disk with this radius.
What is the net upward force on an airplane wing of area 21.9 m2 if the speed of air flow is 293 m/s across the top of the wing and 278 m/s across the bottom
An electron is released from rest at the negative plate of a parallel plate capacitor and accelerates to the positive plate, What is the kinetic energy of the electron just as it reaches the positive plate
A 6.0 kg box slides down an inclined plane that makes an angle of 39° with the horizontal. at what rate does the box accelerate down the slope
a child on a swing set swing back and forth if the length of the supporting cables for the swing is 2.1 m long, what's acceleration does to gravity or oscillation
q1. a swimming pool has dimensions 50.0 m multiplied by 15.0 m and a flat bottom. when the pool is filled to a depth of
He pushes just hard enough to get the desk moving and continues pushing with that force for 5.00 s. Explain how much work does he do on the desk?
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