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A doctor examines a mole with a 16.0 cm focal length magnifying glass held 12.0 cm from the mole.
(a) How far is the image from the lens? Is the image real or virtual?
(b) What is its magnification?
(c) How big is the image of a 5.00 mm diameter mole?
a person stands on a platform initially at rest that can rotate freely without friction. the moment of inertia of the
A lead block is suspended from the underside of a 0.8 kg block of wood of density of 720 kg/m3. what is the mass of the lead block
An airplane with a mass of 2.2 x106 kg. has the air flow past the lowersurface of the wings at 80 m/s. how fast must theair flow over the upper surface of the wing
The figure shows a simple harmonic wave at time t = 0 (blue curve) and later at t = 1.9 s (red curve). Write a mathematical description of this wave. (Use the following as necessary: x and t. Assume the wave is traveling to the right and that less..
A venturi is constructed of a 9.0 cm diameter pipe with a 2.0 cm diameter throat. What is the pressure in the throat
Find the critical angle for an optical fiber whose core has n value of 1.50 and whose cladding has n value of 1.15
To pass a slow moving truck, you want your 1300 kilogram car to accelerate from 30.0 mph to 40 mph in 3 sec. Find the minimum power required for this pass
A uniform electric field of magnitude 400V/m is directed in the positive x-direction. A10 µC charge moves from the origin to the point (x, y) = (20 cm, 50 cm). What was the change in the potential energy of this charge?
A gold nucleus contains 197 nucleons packed tightly against each other. A single nucleon (proton or neutron) has a radius of about 1.310-15 m. Calculate the approximate radius of the gold nucleus. (Hint: Remember that the volume of a sphere is (4/..
sound exits a diffraction horn loudspeaker through a rectangular opening like a small doorway. a person is sitting at
A 21g particle is moving to the left at 29 m/s. How much work must be done on the particle to cause it to move to the right at 41 m/s.
A 2 kg mass is placed at rest against a spring of spring constant 5 N/m, which is compressed by 10 cm from its equilibrium position. compute the amount of potential energy stored in the spring
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