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A gamma-ray photon produces an electron-positron pair, each with a kinetic energy of 230keV.
A. What was the energy of the photon?
B. What was the wavelength of the photon?
Four particles with masses 4 kg, 2 kg, 4 kg, and 2 kg are associated by rigid rods of negligible mass. The origin is centered on the mass in the lower left corner, and all the particles are located in Quadrant 1. The rectangle is 5 m wide and 4 m ..
A 40 kg child slides down a playground slide at a constant speed. The slide has a height of 3.6 m and is 7.6 m long. find the magnitude of the kinetic friction force acting on the child
A 1.6-cm-tall object is 30cm to the left of a lens with a focal length of 15cm . A second lens with a focal length of 42cm is 58cm to the right of the first lens, Calculate the image height
Two loudspeakers are placed above and below each other and driven by the same source at a frequency of 4.50x10^2 Hz. An observer is in front of the speakers (to the right) at point O.
A car wheel with a moment of inertia of 7.85 kg.m^2 is accelerating from 2160 rpm to 5040 rpm in a time of 10.0s. calculate The work done in raising the rotation frequency
The plane is inclined at an angle of 24.9 degrees with the horizontal. Using the accerlation due gravity from your reference table. Illustrate what is the magnitude of object's acceleration?
A box weighing 300N is shoved across the floor of an apartment by a force of 400 N exerted downward at an angle of 35.2° below the horizontal. If the coefficient of kinetic friction between the box and the floor is 0.540, how long does it take to mov..
A curve in a road forms part of a horizontal circle. As a car goes around it at constant speed 14m/s, the total force exerted on the driver has magnitude 120 N. What are the magnitude and direction of the total vector force exerted on the driver i..
If you were to send a beam of laser light to a space station above an atmosphere and just above the horizon, would you aim the laser above, below or at the visible space station.
A toaster operating on 120 V uses a current of 15.0 A. What is the toaster's power consumption, what is the cost of using the toaster for 3.2 min
An electron moves into a uniform magnetic field B = 0.182mT with initial speed with v = 12000m/s, What is the radius of the helical motion
A person lifts a 5kg cement block a vertical distance of 2.3m and after that aeries the block horizontally a distance of 6m. Determine the work completed by the person and by the force of gravity in this process.
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