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The lenses used in a compound microscope have powers of + 90 D and + 60 D . If a total magnification of -250 x is desired, what should be the distance between the two lenses?
A convex lens with f1= 20.3cm is mounted 39.5cm to the left of a concave lens. When an object is placed 29.4cm to the left of the convex lens, What is the focal length f2 of the concave lens
An ideal monatomic gas expands isothermally from 0.500 m3 to 1.25 m3 at a constant temperature of 630 K, Find the thermal energy transfer Q
A stone is thrown straight up with a speed of 25.0 m/s from the top of a building 55.0 m tall. How far above the ground will the stone go
In a Young's double slit experiment, if the separation between the two slits is 0.050mm, find the spacing between the first order and second order bright fringes for light with wavelength of 600nm
A block with mass m = 7.0 kg is attached to two springs with spring constants kleft = 37.0 N/m and kright = 48.0 N/m. The block is pulled a distance x = 0.21 m to the left of its equilibrium position and released from rest. 1) What is the magnitud..
A 6.30 x 10 -5 H solenoid is constructed by wrapping 54 turns of wire around a cylinder with a cross-sectional area of 6.4 x 10-4 m2. Determine the change in the length of the solenoid
You wish to design a velocity selector that will allow protons to pass through only if they have a speed of 500 m/s, You decide to produce this electric field using a parallel-plate capacitor with a plate spacing of 1.0 mm. What is the electric pote..
A neutral conductor contains a hollow cavity in which there is a +100 nC point charge. what is the charge on the exterior surface of the conductor
A wrecking ball (weight = 4600 N) is supported by a boom, which might be assumed to be uniform and has a weight of 3600N. As the drawing shows, a support cable runs from the top of the boom to the tractor. The angle between the support cable and t..
A mortar crew is positioned near the top of a steep hill. Enemy forces are charging up the hill and it is necessary for the crew to spring into action. find How long will the mortar shell remain in the air
what magnitude of horizontal force must the person apply to keep it moving with constant velocity? c) If the person continued to push with the force used to start the motion, what would be the acceleration of the trunk.
A space station in the form of a large wheel, 311m in diamter, rotates to provide an "artificial gravity" of 5.2m/s^2 for people located on the outer rim. Find the rotational frequency of the wheel
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