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How does the wavelength of a photon involved in pair creation compare to the wavelength of a photon involved in pair annihilation (larger/smaller/the same)? Explain your answer.
Cavities below the surface of the Earth cause anomalies in the value of g measured at the surface. a) Show that the vertical component of g a distance x from a point directly above a cavity is less
Outline the Quantum Confinement effects in quantum wells
The scale reads 28N when the lower spring has been compressed by 2.5cm. What is the value of the spring constant for the lower spring?
Write down the consumer and power source conditional marking and mark the directions of the electrical values in it. write down the ohms law and the power expression of them.
A 150g block on a frictionless table is firmly attached to one end of a spring with k = 30N/m . The other end of the spring is anchored to the wall. A 30g ball is thrown horizontally toward the blo
A 3.0W source of light produces monochromatic beam of wavelength 550 nm . This beam is incident on a metal surfae with work function of 0.5ev a) how many photons are produced in one second?
In a Haynes- Shockley Experiment, the distance between the cross R and A is d=0.1m, t=0.25 milliseconds, if the carriers are subject to a field 1,000 volts/meter, calculate the minority carrier mobi
When a laser beam reflects from a rotating mirror, it produces pulses of light with a band of frequencies centred on the fundamental optical frequency. Why do the light pulses give rise to a band o
A dielectric is pulled from between the plates of a capacitor which remains connected to a battery. What changes occur to the capacitance, charge on the plates, potential difference, energy stored,
After the collision, the orange disk moves along a direction that makes an angle of 35.0° with its initial direction of motion and the velocity of the yellow disk is perpendicular to that of the
A uniform piece of aluminium is 4m by 4m and 2cm thick. A 1m by am square piece is cut out from it. The center of the cutout piece is at the coordinate (1,2) in meter. Calculate the x coordinate of
A 0.452 kg block of ice is compressed a distance of 0.13 m against a spring with a spring constant of 378 N/m and is released. Use conservation of energy to calculate the height of the block when it
A 45.7 kg girl is standing on a plank that has a mass of 152 kg. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless supporting surface. The girl begins t
A Fabry-perot cavity is made from a 1.00 cm- tick slab of germanium, with index of refraction 4.02. Find the finesse, the coefficient of finesse, the resolving power and the free spectral range wh
Sodium light of wavelength 589 nm is focused through a pinhole before illuminating Young's double aperture with an aperture spacing of 1.00 mm. If the spacing between the pinhole and the aperture is
A 988 kg satellite orbits the Earth at a constant altitude of 106 km. How much energy must be added to the system to move the satellite into a circular orbit with altitude 192 km? Answer in MJ.
A billiard ball moving at 5.60 m/s strikes a stationary ball of the same mass. After the collision, the first ball moves at 4.59 m/s, at an angle of 35.0° with respect to the original line of mo
(a) If the collision is perfectly inelastic, calculate the speed and direction of the players just after the tackle. (b) Determine the energy lost as a result of the collision.
The movable mirrror in a Michelson interferometer is displaced to give an interferogram with 1000 local maxima. If the illumination wavelength is 633 nm, how far did the mirror move?
When a 0.5 kg mass is suspended from a spring, the spring stretches 4 cm. The mass is then displaced 2 cm from its equilibrium position and released. a) What is the spring constant? b) What is the m
(1) What happens to the capacitance and voltage of the capacitor? (2) Derive and explain why halving the distance between the plates of a disconnected, charged capacitor reduces the stored energy by
A sodium ion (NA+) is neutralized by capturing a 0.5 eV electron. What is the wavelength of the emitted radiation if the ionization potential of sodium (Na) is 5.41 volts? Please show your work.
A neutron passes two points 1.0 meter apart in 1.0 microsecond. Calculate the neutron's energy in units of both joules (J), ergs and electron volts. Please show all work.