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If the proton proton chain is the only nuclear reaction that happens in a star, what is the total number of Hydrogen nuclei in the core of this star? How much energy is available in each Hydrogen nucleus from nuclear fusion through the proton proton chin in joules?
Find out the translational speed at the bottom of the fall where it is horizontal. Ignore the frictional losses and assume mass of the cylinder is distributed uniformly.
IF Earth's orbit were suddenly to become much more eccentric. keeping orbital semimajor axis as is, Is our solar system typical in having all of its planets in very low eccentricity orbits
a sample of rock from an asteroid is assayed and found to contain 3.62 parts per million uranium, how old is this sample
The density of ice is 917 kg/m3, and the density of sea water is 1025 kg/m3. What is the weight of the heaviest bear that the ice can support without sinking completely beneath the water
An electron initially at rest recoils after a head-on collision with a 5.94-keV photon. Determine the kinetic energy acquired by the electron
A person walks 25.0 north of east for 3.10 km. explain how far would another person walk due north and due east to arrive at the same location?
One liter of helium at STP is heated at constant volume to 100 C. It is then allowed to mix in an insulated container with one liter of methane which is initially at STP, the final volume being two liters.
A mass attached to a spring oscillates with an amplitude of 18.0 cm; the spring constant is k= 17.0N/m. Find the value of the mass
A proton is released from rest inside a region of constant, uniform electric field E1 pointing due North. 29.8 seconds after it is released, What is the ratio of the magnitude of E2 to the magnitude of E1
A light string is wrapped around a spool of radius 35 cm. Shape of spool is unknown, thus you do not know moment of inertia. find the angular acceleration of the spool
A block of wood of mass 4.85 kg rests on a horizontal frictionless surface. find the velocity of the wood after the bullet has passed through
A string on a musical instrument is 20cm long and is fastened at both ends. The total mass of the string is .02 kilograms. We desire to cause the string to vibrate at a fundamental tone of 500Hz when it is plucked or bowed. To what tension should ..
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