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The lenses used in a compound microscope have powers of + 90D and + 60D . If a total magnification of -250x is desired, what should be the distance between the two lenses?
0.16mol of argon gas is admitted to an evacuated 40cm3 container at 10 ?C. The gas then undergoes an isochoric heating to a temperature of 500 ?C
A cylindrical storage tank has a radius of 1.22 m. When filled to a height of 3.71 m, it holda 14 300 kg of a liquid industrial solvent.
A test rocket is fired vertically upward from a well. A catapult gives it an initial speed of 80.6m/s at ground level. Its engines then fire and it accelerates upward at 3.80 m/s2 until it reaches an altitude of 930m. At that point its engines fai..
A dissecting microscope is designed to have a large distance between the object and the objective lens. What is the angular magnification
A car accelerates from 17 m s1to 31 m s-1 with a uniform acceleration of 2.5 m s-2. Calculate the displacement of the car during the acceleration.
A student sucks on the end of a long tube which is initially filled with air and whose other end is in a large bucket of water which is open to the atmosphere. They manage to draw the water up a vertical distance of 5.09 m
A 1.80 kg block slides on a frictionless horizontal surface. The block hits a spring with a speed of 2.00 m/s and compresses it a distance of 11.0 cm before coming to rest. Illustrate what is the force constant of the spring?
A hydraulic system uses a large piston with a 1-m radius and a small piston with a 0.10-m radius. If the smaller piston is displaced two meters then how far is the larger one displaced
An electromagnetic wave travelling the +z direction has a maximum magnetic field of 10^-7 T in the negative y direction at z = 0 and t = 0. The magnetic field falls to zero in 3 x 10^-16 seconds.
A driver travels 10 km east, 20 km north and 50 km in a direction 30 degrees south of west. What is the drivers average velocity if the trip takes 90 minutes
A ring of charge is centered at the origin in the vertical direction, Find the total electric field, E, of the ring at the point P = (2.25 m, 0.00 m)
A car with a mass of 950kg is travelling east when it collides with a truck of mass 1900kg that is travelling south. What is the speed of the truck before the collision
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