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An object is in front of a diverging lens with a focal length of -19.0 cm. The image seen has a magnification of 0.5. (Include the sign of the value in your answers.)
(a) How far is the object from the lens?
(b) If the object has a height of -14.0 cm because it points below the principal axis (it is inverted), what is the image height hi?
An automobile crankshaft transfers energy from the engine to the axle at the rate of 53.6 kW when rotating at a speed of 1250 rev/min. What torque does the crankshaft deliver?
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
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A tungsten filament used in a flashlight bulb operates at 0.20A and 3.2 V. If its resistance at 20 degrees C is 1.7 ohms, What is the temperature of the filament when the flashlight is on
three charges q1 1.98 10-9 c q2 -3.15 10-9 c and q3 1.06 10-9 c are located on the x-axis at x1 0 x2 10.0 cm and
a penny is placed at the outer edge of a disk radius 0.124 m that rotates about an axis perpendicular to the plane of
a 17.0-g piece of styrofoam carries a net charge of -0.75 microc and is suspended in equilibrium above the center of a
Consider a spherical Gaussian surface which surrounds two electric charges (+Q), What is the net electric flux through the Gaussian surface
A 675 kilogram elevator starts from rest and moves upward for 3.40 second with constant acceleration until it reaches its cruising speed, 1.65 m/s. Find the average power of the elevator motor during this period
A charge of -4.26 micro-Coulombs is fixed at the center of a compass. find direction of the net electrostatic force acting on the charge
q1. a 2.00 kg metal block slides on a rough horizontal surface inside an insulated pipe. after sliding a distance of
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