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In the picture two spheres of mass m and a third sphere of mass M form an equilateral triangle and a fourth sphere of mass m 4 is at the center of the triangle
When we look at stars in the sky we see a wide range of brightness. Explain the factors that would make one star appear brighter than another.
Consider a nuclear power plant that produces 1000 MW of power and has a conversion efficiency fo 30%.
Determine the energy (in joules) released by the complete fissioning of 0.9 gram of 235nucleons 92protonsU.
If the energy released per 23592U fission is 2.0e2 MeV, how many kilograms of coal must be burned to produce the same energy.
How many bound states does the particle have in a well of depth V_0 / 4 and width 2L? In a well of depth 4V_0 and width L/2?
Can an electron be confined in a nucleus? Answer the question using the following outline or some other method?
A spacecraft is in orbit around Jupiter. The radius of the orbit is 3.0 times the radius of Jupiter (RJupiter = 71,500 km).
Consider a small, natively disordered protein that exists in equilibrium with a highly ordered (folded) protein.
The weight of a object is the same on two different planets. The mass of planet A is only sixty percent that of planet B. Find ra/rb, which is the ratio
Doubly ionized lithium, Li^2+, absorbs a photon and jumps from the ground state to its n = 3 level. What was the wavelength of the photon?
The mass of Uranus is 9x10 to the 25th kg. Its mean distance from the earth is about 3x10 to the 12th meters. Estimate your mass in kilograms at birth
How can a spectrogrph be used to indicate that the rings of Saturn are not solid?
The wavelength of a photon emitted from the n=3 to n=2 transition is longer than that emitted for the n=2 to n=1 transition.
If you consider the Bohr model of the atom, where the proton and electron act as two bodies of mass, and the electron escapes.
Energy is required to separate a nucleus into its constituent nucleons. This energy is the total binding energy of the nucleus.
The change in potential energy of an object is equal to the net work done on the object.
Every few hundred years most of the plants line up on the same side of the Sun. Calculate the total forces on the Earth due to Venus, Jupiter
Distinguish the molecular mechanisms for competitive and noncompetitive inhibition.
Calculate the mass of the earth given the acceleration of gravity at the north pole is 9.830 m/s^2 and the radius of the earth is 6371 km from pole to pole.
Explain how the age of rocks can be determined by radioactivity. Give an exampl
Which is hotter, Mercury or Venus? Why? Which is hotter, Mercury or Venus? Why?
Explain what causes a lunar eclipse. Explain what causes a solar eclipse. Include a diagram. Why don't eclipses occur every month?
A cheetah is hunting. Its prey run for 2.5 s at a constant velocity of +6.9 m/s. Starting from rest, what constant acceleration must the +cheetah
A rock is thrown straight up from the earth's surface. Which one of the following statements concerning the net force acting on the rock at the top of its path