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A concave shaving mirror has a radius of curvature of +28.3 centimeter. It is positioned thus that the (upright) image of a man's face is 3.24 times the size of the face. Estimate how far is the mirror from the face?
question1a mountain climber in procedure of crossing between two cliffs by a rope pauses to rest. she weighs 521 n. as
In a photoelectric effect experiment, visible radiation of energy 2.68 eV is incident upon a metal of unknown work function. determine the work function of the metal
The earth moves around the sun in a nearly circular orbit of radius 1.50 x 10^11 m. During the three summer months (an elapsed time of 7.89 x 10^6 s), What is the average speed of the earth
An engine absorbs 1.69 kJ from a hot reservoir at 277°C and expels 1.22 kJ to a cold reservoir at 27°C in each cycle. (a) What is the engine's efficiency? % (b) How much work is done by the engine in each cycle? J (c) What is the power output of the ..
During an adiabatic process, the temperature of 4.50 moles of a monatomic ideal gas drops from 515°C to 193°C. Find the change in internal energy
A candle is placed 16.85 cm in front of a convex mirror. When the convex mirror is replaced with a plane mirror, Find the focal length of the convex mirror
A light beam is traveling through an unknown substance. When it exits that substance and goes into air, the angle of reflection is 32.0°, What is the index of refraction of the substance
a describe internal normal shear force and moment inside a member of a frame. what causes these questions ?b describe
cirrus sr20 cruises at 155 kts at 8000 ft geometricnbspaltitude. its wing has span b 38.333 ft sref 144.9nbspft2 amp
A 900 N c rate s lides 12 m down a ramp that makes an angle of 3So with the horizontal. how much thermal energy is created
In an open RC circut, the total resistance is 15Kohms and the battery emf is 24 and constant is measured to be 35 microsecond calculate (a) the total capacitance of the circuit
the blade of a windshield wiper moves through an arc of 90deg in a time of 0.40s. the tip of the blade moves on the arc
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