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On a cold day, 16000 J of heat leaks out of a house. The inside temperature is 20.0° C, and the outside temperature is -18° C. What is the increase in the entropy of the universe that this heat loss produces?
A charged object has a potential of 40 V at a distance of 3 m. If the distance is increased to 42 m, then what will be the new potential
What is order of the layers from top to bottom
The focal lengths of the objective and the eyepiece in a microscope are 0.29 and 2.5 cm. what is the distance between the objective and the eyepiece?
a photocell that detects the amount of light transmitted through the finger at each wavelength. Identify the frequency of each of these light sources. If 66% of the energy of the red source is absorbed in the blood, by what factor does the amplitu..
A gymnast with mass m1 = 43 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 108 kg and length L = 5 m. Each support is 1/3 of the way from each end. at first the gymnast stands at the left end of..
The sodium D line is a doublet consisting of two wavelengths, 588.995 and 589.592 nm. Calculate the angular separation between these two lines in the first-order spectrum for a grating with 4000 lines per centimeter. Repeat for the second order.
An emf is induced in a conducting loop of wire 1.11m long as its shape is changed from square to circular.Find the average magnitude of induced emf if the change in shape occurs in 4.03s and the local 0.135-T magnetic field is perpendicular to the ..
A small plane departs from point A heading for an airport 500 km due south at point B, Determine the proper heading for the plane and the time of flight
At full power, how long would it take for car to accelerate from 0 to 56 mph? Neglect friction and air resistance.
He pulls on a rope that is fastened to the platform and runs over a pulley on the ceiling. Illustrate with what force does he have to pull in order to give himself and the platform an upward acceleration of 1.0 m/s^2?
the lowest pressure attained in a "vacuum" in a laboratory on the earth is 1X10^-17 atm at a termperature of 4.1 K. what is the number of molecules per cubic centimeter in this vacuum
what is the frequency of vibration of the string. If the shot was launched from 6.00 f above the ground at an initial angle of 42.0 degrees , what was its initial speed.
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