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Two capacitors C1=2.5mF and C2=5.0mF are connected in parallel. If a voltage of V=120 volts is applied across the capacitors, what is the energy stored in capacitor C2?
The arm of a crane at a construction site is 14.4 m long, and it makes an angle of 40° with the horizontal. Assume that the upmost load the crane can handle is limited by the amount of torque the load produces at the base of the arm.
A 400kg piano slides 4.0 m down a 30 degree incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. Find out the force exerted by the man.
Two identical small insulating balls are suspended by separate0.211 m threads that are attached to a common point on the ceiling. Each ball has a mass of 8.06E-4 kg. Initially the balls areuncharged and hang straight down.
you shine a laser on a pair of closely spaced slits. by turning a knob you can change the spacing of the slits. the
A soccer ball is kicked with the initial speed of 10.8 m/s . After 0.720 s it is at its highest point. What was its initial direction of motion
Three moles of an ideal gas undergo a reversible isothermal compression at 21.5°C. During this compression, 1870 J of work is done on the gas. What is the change of entropy of the gas?
A wheel with a tire mounted on it rotates at the constant rate of 2.87 times a second. find the tack's tangential speed
A system consists of 0.697 kg of water at 80 degrees C. A paddle wheel does 42 kJ of work stirring the water. The heat energy lost to the environment is 15 kJ. What is the final temperature of the system in degrees C?
A tiny sphere with a charge of q = +6.4 µC is attached to a spring. Two other tiny charged spheres, each with a charge of ?4.0-µC, are placed in the positions shown in the figure, in which b = 4.1 cm.
Treat a Boron atom as 5 protons at the origin, 2 electrons spread uniformly on a shell (radius 13.2[pm] centered on the origin) , 2 more electrons spread on a shell (radius 105.8[pm] centered on the origin), and its outer electron at x= 211.6 pm.
Describe how to find moment of inertia. Provide equations allowing to find moment of inertia of a solid cylinder and of a cylindrical ring. State Newton's Second Law for rotational motion
The burning of gasoline in a car releasesabout 3.0 * 10^4 kcal/gal. what is the efficiency of the engine under those conditions
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