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A small object is on the optical axis, 25.3 cm from a +21.2 cm lens. Find the image distance and magnification by calculation.
Two skiers, one of mass m and the other 2m, start at the top of a mountain. The more daring skier (2m) takes the double black diamond trail to arrive at the bottom more quickly, while the other skier meanders back and forth on a green beginner tra..
A small compass is held horizontally, the center of its needle a distance of 0.140 m directly north of a long wire that is perpendicular to the earth's surface, What direction does the current in the wire flow, toward or away from the earth's surfa..
A student sees a newspaper ad for an apartment that has 1630 square feet (ft2) of floor space. How many square meters of area are there
question a 60 year old person has a threshold of hearing of 75.0 db for a sound with frequency f 10000 hz. by what
A 4.55kg block of ice at 0.00oC falls into the ocean and melts. The average temperature of the ocean is 3.55oC, including all the deep water. By how much does the melting of this ice change the entropy of the world? (J/K)
What would be the apparent depth (below the air-oil interface) of a small particle at the bottom of the water layer viewed from directly above the container?
A bedroom bureau with a mass of 40 kg, including drawers and clothing, rests on the horizontal floor. compute the static friction force on the bureau initially
One cylinder in the diesel engine of a truck has an initial volume of 600cm^3. air is admitted into the cylinder at 30 degrees C and a pressure of 1.0 atm. the piston rod then does 400J of work to rapidly compress the air. what are its final temperat..
A sealed cubical container 12.0 centimeter on a side contains three times Avogadro's number of molecules at a temperature of 17°C. Obtain the force exerted by the gas on one of the walls of the container
An ideal gas is allowed to expand adiabatically until its volume increases by 50%. By approximately what factor is the pressure reduced
upon what properties of the sound wave do the a loudness b pitch and c quality of a musical note depend? why do the
An object is dropped from rest from a height of 4.36E+6 m above the surface of the earth. If there is no air resistance, what is its speed when it strikes the earth
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