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In carbon-nitrogen nuclear fusion cycle, protons are fused to form a helium nucleus. Positrons releases some energy. The number of protons fused and the number of positrons released in this process respectively are
An isolated conductor of arbitrary shape has a net charge of +9.0 10-6 C. Inside the conductor is a cavity within which is a point charge q = +3.4 10-6 C. What is the charge on the cavity wall
A concave mirror produces a virtual image that is seven times as tall as the object. What is the focal length of this mirror
A photon with a wavelength of 7.50e-11 m is scattered by a loosely bound electron in a metallic target and exits at an angle of 135° from its original direction. What is the wavelength of the scattered photon
An oscillator vibrating at 1220Hz produces a sound wave that travels through an ideal gas at 325 m/s when the gas temperature is 22.0 ?C. What should the gas temperature be to achieve this wavelength
A solid disk with m=60.0kg and a diameter of 48.0cm is to be turned from rest through 12.0 revolutions in 6.00s. Calculate the torque required to accomplish this
A light bulb is connected to a 240-V wall socket. The current in the bulb depends on the time t according to the relation I = (2.828 A) sin[(345.4 Hz)t]. What is the average power delivered to the light bulb
What is magnetic flux through the desk surface
a falling flower pot passes a 1.5 m tall window of an apartment building in a time of .16 s. from what height above the top of the window was the pot dropped
A cylinder with a piston contains 0.300 moles of oxygen at 2.20×10^5 pa and 340 K . The oxygen may be treated as an ideal gas. Find the internal-energy change during the final cooling
A 30g dart is shot straight up at 10m/s . At the same instant, a 24g ball of cork is dropped from 2.0m above the dart. What is the speed of the cork ball immediately after it is hit by the dart
Yusef pushes a chair of mass m = 55.0kg across a carpeted floor with a force F? p of magnitude Fp = 148N directed at ? = 35.0degrees below the horizontal, What is the magnitude of the acceleration a of the chair
An ocean liner leaves New York City and travels 43° north of east for 189 km. How far east and how far north has it gone? In other words, what are the magnitudes of the components of the ship's displacement vector in the directions.
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