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Calculate the energy of each of the two photons produced from electron-positron pair annihilation when the electron and positron were nearly at rest
An equilateral glass prism is to be designed so that a light beam entering the prism perpendicular to the first face will be totally internally reflected once off the second face
An AC generator has an output rms voltage of 94 V at a frequency of 76 Hz.find the inductive reactance and rms current
A 295 turn solenoid has a radius of 4.00 cm and a length of 22.0 cm. Find the energy stored in it when the current in its windings is 0.497 A
A virtual object is located to the right of a diverging lens whose focal length is -f cm. Find the distance of the image of the virtual object measured with respect to the the lens
A wire of radius a is surrounded by a cylindrical conductor of inner radius a and outer radius 2a,. find the radius at which the magnetic field is zero
A long straight wire carries a current that is increasing at the rate of one ampere per microsecond. find In which direction will current flow in each loop
The negative terminals of three batteries (3V, 6V, 9V) are each connected to a 150 ohm resistor. what is the voltage across the gap in the broken wire
During an experiment you determine the cat off wavelength of a cathod ray tube to be λ0. What are the stopping voltage(potential) and electron velocity in terms of λ0 for sec
A thin glass rod is submerged in oil. What is the critical angle for light traveling inside the rod
if an electron is confined to a region of size 35.2 nm, what is the minimum possible uncertainty in its momentum
A 36.0 µF capacitor is connected to a 49.0 omegacap.gif resistor and a generator whose rms output is 30.0 V at 60.0 Hz. find The rms voltage drop across the resistor.
The nucleus of a hydrogen atom is a single proton. The radius of a proton is approximately 1 fm (1 multiplied by 10âˆ'15 m). What is the approximate volume of a proton
If 15 g of radon gas with a half-life of 4 days is present in a balloon at t = 0, what is the mass of radon gas present
This question has to do with the oil drop experiment and how much voltage must be applied to keep a drop suspended in air. how much voltage must be used to keep the oil drop suspended
What is the minimal mass of helium (density 0.18 kg/m^3) needed to lift a balloon carrying two people in a basket, if the total mass of people, basket
A bar of length .15 m, width .05 m and negligible height is spinning about its center of mass at 2 radians per second. what is their final angular velocity
A guy is spinning initially at a constant rate with his arms at his sides. He then puts his arms straight out. How much does his moment of inertia change when he sticks his arms out
A string with a length of 3.0 m has two adjacent resonances at frequencies 112 Hz and 140 Hz. What is the wavelength of the first harmonic
The distance between successive crests of a sound wave is 33m. what is the approximate frequency of the sound wave
what happens to speed of sound in air if you quadruple the temperatur of the air, How many times larger does it become
The current through a 908 ohm resistor is 189 mA; to the nearest volt, what is the potential difference across the resistor
A box of bananas weighinh 40 N rests on a horizontal surface. The coefficient of static friction between the box, the magnitude of the frictional force is
A charged particle of mass m and charge q is suspended from a light thread in a region of space where there is a uniform horizontal electric field. find the angle between the thread and a vertical l
A light-rail train going from one station to the next on a straight section of track accelerates from rest at 2.37 m/s2 for 15.9 s. What is the distance between the stations