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What is the final temperature reached by the addition of 11.4 grams of steam at 100°C to 681 grams of water at 25°C in an aluminum calorimeter having a mass of 781 grams.
What is the minimum coefficient of friction that will prevent sliding. What should be the highest speed of the car so it can round the curve safely.
A 2000w air conditioner and 700w refrigerator each operate on 120V rms. find current through air conditioner
A nonconducting solid sphere of radius R has a volume charge density that is proportional to the distance from the center. That is, ? = Ar for r R, where A is a constant. (Use the following as necessary: 0, A, r, and R, as necessary.)
The allowed energies of a simple atom are 0.00 eV, 4.25eV , and 6.64eV. What wavelengths appear in the atom's emission spectrum
The proper length of one spaceship is three times that of another. The two spaceships are traveling in the same direction and, while both are passing overhead, determine the speed of the faster spaceship
A 54.5-kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.646 and 0.321, respectively. What horizontal pushing force is required to just start the crate moving
an airplane with a speed of 45 ms is climbing upward at an angle of 46deg with respect to the horizontal. when the
A runaway railroad car, with mass 30 x 10^4 kg, coasts across a level track at 1.5 m/s when it collides with a spring loaded bumper at the end of the track, What is the maximum displacement of the spring after the collision
A person drops a cylindrical steel bar (Y = 2.00 × 1011 Pa) from a height of 3.30 m (distance between the floor and the bottom of the vertically oriented bar). what is the maximum compression of the bar
A mass m1 = 3.2 kg rests on a frictionless table and connected by a massless string over a massless pulley to another mass m2 = 4.3 kg which hangs freely from the string, How much work is done by gravity on the two block system
suppose you have an electric hot water heater for your house which is an aluminum cylinder which has a 0.56 m radius
The nucleus of a hydrogen atom is a single proton. The radius of a proton is approximately 1 fm. What is the approximate volume of a proton
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