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A 0.85-cm-diameter microscope objective has a focal length of 2.2 mm. It is used in visible light with a wavelength of 538 nm. What is the objective's resolving power if used in air? What is the resolving power of the objective if it is used in an oil-immersion microscope with n=1.44?
A battery of ? = 2.70 V and internal resistance R = 0.700 ? is driving a motor. The motor is lifting a 2.0 N mass at constant speed v = 0.50 m/s. Assuming no energy losses, find the current i in the circuit. Enter the lower current.
A person pulls a toboggan for a distance of 41.6 m along the snow with a rope directed 33.8 ° above the snow. How much work is done on the toboggan by the tension force
A black, totally absorbing piece of cardboard of area A = 3.0 cm2 intercepts light with an intensity of 3.9 W/m2, What radiation pressure is produced on the cardboard by the light
An unpolarized light beam of intensity I = 14.0 W/m2 is directed along the x-axis and enters a sequence of three polarizers at normal incidence. Calculate the intensity of the light leaving the last polarizer
A golfer hits a shot to a green that is elevated 3.0 m above the point where the ball is struck. find the speed of the ball just before it lands
Two identical 1.70kg masses are pressed against opposite ends of a spring of force constant 1.70N/cm, Find the maximum speed of each mass when it has moved free of the spring on a smooth
A 12 kg block is at rest on a level floor. A 390 g glob of putty is thrown at the block such that it travels horizontally, hits the block, and sticks to it. what is the initial speed of the putty
You have designed a rocket to be used to sample the localatmosphere for pollution. It is fired vertically with aconstant upward acceleration of 20 m/s2. Determine the total time the rocket is in the air
Compute the index of refraction of the gas
A ball swings in a vertical circle at the end of a rope 1.30 m long. When the ball is 37.3 ° past the lowest point on its way up, Sketch a vector diagram showing the components of its acceleration
The best leaper in the animal kingdom is the puma, With what speed must the animal leave the ground to reach that height
Two wires are tied to the 300g Sphere as shown in figure below. The sphere revolves in a horizontal circle at constant speed of 7.5 m/s. Find the tension in each wire
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