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An x-ray of wavelength 86.8 pm strikes an electron, and is Compton scattered by an outgoing wavelength 88.2 pm.
What is the speed of the recoiling electron?
A series circuit has a peak voltage of 114 and a peak current of 3 . If the current lags the voltage by 42 , what is the average power of the circuit?
The total kinetic energy in one mole of nitrogen is 4,000 J. what is the root mean-square velocity of an individual particle in the ideal gas
The horizontal velocity of a projectile
a 3.6 vc change is moved from a position where its electric potential energy is 7.2 mj to a position where its
A starship is circling a distant planet of radius R. The astronauts calculate that the free-fall acceleration at their altitude is half the value at the planet's surface. Find how far above the surface are they orbiting
An automobile of mass 1500 kg moving at 25m/s collides with a truck of mass 4500 kg at rest. What is the final velocity of the car after the collision
In an electron microscope, there is an electron gun that contains two charged metallic plates 2.65 cm apart. Determine the time interval the electron spends between the plates
An electron is suspended at a distance of 1.36 cm above a uniform line of charge. What is the linear charge density of the line of charge
Two trains are traveling toward each other in still air at 27.6 m/s relative to the ground. One train is blowing a whistle at 330 Hz. The speed of sound is 343 m/s.
A refracting telescope is used to view the Moon (diameter 3480 km, distance from Earth 385,000 km). What should be the distance between the lenses
A thin film of MgF2 (n=1.38) coats a piece of glass. Constructive interference is observed for the reflection of light with wavelengths of 500nm and 625nm.
A light ray in the core (n = 1.40) of a cylindrical optical fibretravels at an angle θ1= 49.0 degrees with respect to the axisof the fibre. A ray is transmitted through the cladding (n = 1.20)and into the air. What angle θ2 does the exiting ray make ..
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