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The Sun generates most of its light during a series of nuclear reactions called the proton-proton chain. The overall process of these nuclear reactions can be summarized as4 1H → 2He + 2ν + 2γ + 2? Where ν is a small neutral particle called a neutrino, and γ is a photon (a particle of light), which is also neutral. The pre-subscripts on the element symbols H (hydrogen) and He (helium) indicate the number of protons in the nucleus of each element. What is the charge of the unknown entity "?"
An electron traveling at 503 m/s enters a9.4 T magnetic field. The angle betweenthe velocity and the field is 109o. Find the radius of the resulting circular path.
The position of an object connected to a spring varies with time according to the expression x = (4.8 cm) sin(9.3 ?t). Find the amplitude of the motion
Two rods, one of aluminum and the other of copper, are joinedend to end. find the temperature of the aluminium copper interface
A large wooden turntable in the shape of a flat disk has a radius of 2.25m and a total mass of 135kg, Find the angular speed of the turntable after the parachutist lands
You throw a 13.0N rock into the air from ground level and observe that, when it is 13.0m high, Use the work-energy principle to find the maximum height the rock will reach
A plane accelerates from rest at a constant rate of 5.00m/s2 along a runway that is 1800m long. What is the time tTO needed to take off
a proton and an alpha particle q 2e m 4 u are fired directly toward each other from far away each with an initial
Electrons are ejected from a metallic surface with speeds ranging up to 4.5 105 m/s when light with a wavelength of ? = 625 nm is used. What is the work function of the surface
A parallel beam of light containing red (660 nm) and blue (470 nm) wavelengths goes from polystyrene to water, What is the angle between the two colors in water
If you were to build a pipe organ with open-tube pipes spanning the range of human hearing (20 Hz to 20 kHz), what would be the range of the lengths of pipes required
In a classroom demonstration, a 79.2-kg physics professor lies on a "bed of nails." what is the average pressure at each contact
An engine develops 490 N m of torque at 3750 rev/min. Find the power developed by the engine
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