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The Sun rotates on its axis every 25 days. The sun currently has a radius of 7x108m. When it expands into a Red Giant (in about 4 billion years) it will have a radius of 1.5x1011m. What will its rotational period be assuming the same mass for both, and they are both uniformly distributed spherical masses?
A computer monitor uses 2.0 Amp of current when it is plugged into a 120 Volt outlet. The monitor is never turned off. Find the yearly cost of operating the monitor
a freezer with a coefficient of performance of 3.88 is used to convert 1.75 kg of water to ice in one hour. how much electrical energy does the freezer use during this hour of operation
Consider a fusion reaction in which two deuterium nuclei fuse to form a tritium nucleus and a proton. How much energy is released in this reaction
An object of mass m1 = 4.90 kg is connected by a light cord to an object of mass m2 = 3.00 kg on a frictionless surface. Find the acceleration of the two masses
White light passes through a piece of crown glass and strikesan interface with air at an angle of 41.15^\circ. The index of refraction of crown glass is 1.515 for redlight and 1.523 for blue light.
Two point particles of charge Q1 = 48 μC and Q2 = 79 μC are found to have a potential energy of 43 J. What is the distance between the charges in m?
A vibrating source generates a harmonic wave on a string underconstant tension. If the power delivered to the string is doubled, by what factor does the speed change
one of the most powerful cranes in the world operates in switzerland. it can slowly raise a load of m 6900 tonnes to a
A double convex lens (convex on both sides) is made of glass with an index of refraction of 1.65. What is the magnitude of the larger radius
developing a more realistic model the bioengineer models the acceleration of the snow petrl by an equation of the form
What is the magnifying power of an astronomical telescope using a reflecting mirror whose radius of curvature is 4.09m and an eyepiece whose focal length is 3.29cm
A particle of mass 2 units moves along the x-axis attracted toward the origin by the force whose magnitude is numerically equal to 8x. find the differential equation describing the motion
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