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an object which has a height of 270 cm is placed 180 cm from a concave mirror which has a radius of curvature of 220 cm
a a high speed train is traveling at a speed of 48 ms when the engineer sounds the 411 hz warning horn the speed of
assume that a parallel-plate capacitor has circular plates with radius r 29 mm and a plate separation of 70 mm assume
an interstellar space probe is launched from earth after a brief period of acceleration it moves by a constant velocity
a bridge 1210 m long is constructed of steel having a coefficient of expansion of 111 times 10-6k if it is built as a
a beam of light is incident from air on the surface of a liquid if the angle of incidence is 400degand the angle of
1 an ice cube at 00degc is gradually melting what is the change in the ice cubersquos entropy for each 100 g of ice
when a single person shouts at a football game the loudness of sound at the center of the field is 55 db than all the
a playground carousel is free to rotate regarding its center on frictionless bearings and air resistance is negligible
a gaussian surface in the shape of a right circular cylinder by end caps has a radius of 137 cm and a length of 105 cm
the induced magnetic field at radial distance 67 mm from the central axis of a circular parallel-plate capacitor 20
at what rate should the potential difference among the plates of a parallel-plate capacitor with a 22 muf capacitance
red light n1520 and violet light n1538 traveling in air are incident on a slab of crown glass both colors enter the
at a distance of 25m from an isotropic 100 mhz radio source the intensity is 120wm2a what is the rms electric field at
point a is the midpoint of one of the sides of a square on the side opposite this spot two in-phase loudspeakers are
several bacteria are propelled by motors that spin hair-like flagella a characteristic bacterial motor turning at a
an airplane is in level flight over antarctica where the magnetic field of the earth is mainly directed upward away
a typical neutron star might have a mass equal to that of the sun however a radius of only 100 kma what is the
a drop of water on a countertop reflects light from a flower held 36cm directly above it the flowers diameter is 22cm
a battery charger is associated to a dead battery and delivers a current of 51 a for 61 hours keeping the voltage
when a 20 v emf is placed across two resistors in series a current of 20a is present in all of the resistors when the
two narrow parallel slits separated by 085 mm are illuminated by 600 nm light and the viewing screen is 28 m away from
a convex mirror has a focal length of -24cm discover the magnification produced by the mirror when the object distance
the near point of a naked eye is 30 cm when an object is placed at the near point and viewed by the naked eye it has an
1 what will an object weigh on the moons surface if it weighs 100 n on the earths surface2 compute go on the moon from