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An object is placed 7.00 cm in front of a concave mirror. The radius of curvature of the mirror is 20.00 cm. Where is the image located? What is the magnification? Is this image real or virtual? Upright or inverted?
A laser used in a holography experiment has an average output power of 4.93 mW. Calculate the energy (in joules) radiated with each pulse
Next, a beaker of water is placed so that the iron block is submerged in the beaker not touching the bottom. What mass (in kg) is now necessary to balance the scales
A lump of mass 1.0 kg falls on it and sticks to the surface at a distance 0.7 m from the center. a) calculate the new angular speed of the disc b) if the lump gets unstuck and rolls of the disc.
question a projectile is launched from a platform 35 feet high with an initial velocity of 20 feet per second. the
a box rests on a frozen pond which serves as a frictionless horizontal surface. if a fisherman applies a horizontal
A high-voltage transmission line with a resistance of 0.30 /km carries a current of 1050 A, What is the power loss due to resistance in the line
A 15.0 ampere current flows through a 3.25 m section of wire, perpendicular to a 0.250 T magnetic field. What is the magnitude of the force exerted by the field on the wire section
what is the net effect of aerosols on climate? answer must be 400-500 words and fully
Primary side of transformer has a voltage of 44,000 volts and 220,000 turns. to step down to 220 volts, how many turns must secondary side have to have
A student is reading material written on a blackboard. Her contact lenses have a refractive power of 57.50 diopters; the lens-to-retina distance is 1.750 cm. How far (in meters) is the blackboard from her eyes
A 6.250 keV x-ray photon strikes a carbon atom and is scattered with a Compton scattering with one of the carbon’s electrons. The energy of the scattered photon is measured to be 6.175 keV. What is the wavelength of the scattered photon? During what ..
A gasoline engine takes in1.61×104 {\rm J} of heat and delivers3900 {\rm J} of work per cycle. The heat isobtained by burning gasoline with a heat of combustion of4.60×104 {\rm J}/{\rm g}.
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