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An electon is accelerated through 25000 V. If all of its kenetic energy is distributed equally between 5 photons, how much energy and what frequency will one photon have?
A rocket fires two engines simultaneously. One produces a thrust of 615 directly forward while the other gives a thrust of 474 at an angle 39.6 above the forward direction.
the near point of a person's eye is 52.8 cm. To see objects clearly at a distance of 24.0 cm, what should be the focal length and power of the appropriate corrective lens
De Broglie postulated that the relationship ? = h/p is valid for relativistic particles. What is the de Broglie wavelength for a (relativistic) electron
Two 4.0cm × 4.0cm square aluminum electrodes, spaced 0.70mm apart are connected to a 200Vbattery, What is the charge on the positive electrode
A car of mass m moving at a speed v1 collides and couples with the back of a truck of mass 3m moving initially in the same direction, What is the change in kinetic energy of the car-truck system in the collision
A football player runs the pattern by the three displacement vectors, , and . The magnitudes of these vectors are A = 4.00 m, B = 18.0 m, and C = 16.0 m. Using the component method, find out the (1) magnitude and (2) direction of the resultant vec..
A ball is thrown in the air at an initial angle 35 degrees above the horizontal. It takes 4 seconds for the ball to hit the ground
A certain superconducting magnet in the form of a solenoid of length 0.30 m can produce a magnetic field of 13.0 T in its core when its coils carry a current of 105 A. The windings, made of a niobium-titanium alloy, must be cooled to 4.2 K. Find o..
Consider a model thermodynamic system in which the allowed (nondegeerate) energy levels are 0, E, 2E, 3E. Compute the average occupation numbers for each energy level
A cube has sides of length = 0.320 . It is placed with one corner at the origin. The electric field is not uniform but is given by -4.95 2.17 .Find out the electric flux through each of the six cube faces.
If a car traveling at 66 km/h will skid 22 m when its brakes lock, how far would it skid if it is traveling at 120 km/h when its brakes lock.
A car driving directly north on the freeway at a speed of 110 km/h and a truck is leaving the freeway driving 85 km/h in a direction 35 west of north
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