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An inexpensive microscope has a tube length of 12.0cm , and its objective lens is labeled with a magnification of 10x. Calculate the focal length of the objective lens. (Assume the normal reading-distance equals to 25cm.)
What is corresponding free energy change
A system does 112 J of work on its environment and gains 72 J of heat in the process. What is the change in the internal energy of the environment
A gas in a cylinder is held at a constant pressure of 2.20×10^5 Pa and is cooled and compressed from 1.70m^3 to 1.40m^3. Find the amount of the heat that flowed into or out of the gas
A circular coil with one turn is in a perpendicular (time dependent) magnetic field given by B = 1.400 - 0.0500 t Tesla, where time t is in seconds. Calculate the radius of the coil
A thin, horizontal copper rod is 1.10 m long and has a mass of 203 g. What is the minimum current in the rod
If it takes 9.19e5 J of heat to bring 0.30 kg of ice at -17*C to water vapor at 108*C, what is the specific heat of the water vapor
The position vector,r, in meters, of a particle moving in the x-y plane, is giving by the following equation: r=i(2t^2-8t-12)+j(2t^3-18t^2+48t+25), find the direction of the velocity vector at the instant
You spray your sister with water from a garden hose. The water is supplied to the hose at a rate of 0.437 × 10-3 m3/s, At what speed does the water exit the nozzle
A particle with a charge of -60.0 nC is placed at the center of a nonconducting spherical shell of inner radius 20.0 cm and outer radius 24.0 cm, Calculate the speed of the proton
A 70 m3 incompressible box is completely submerged in a fluid. What volume of fluid is displaced by the box if the fluid is air? The density of air is 1.2 kg/m3
For a diverging lens (f = -22.0 cm), find the image distance for an object that is 22.0 cm from the lens. Determine the magnification of the lens
A child is twirling a 0.0215-kg ball on a string in a horizontal circle whose radius is 0.143 m. The ball travels once around the circle in 0.586 s. Determine the centripetal force acting on the ball
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