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an astronaut on a spaceship traveling at 075c relative to earth measures his ship to be 29m long on the ship he eats
an equilateral triangle 100m on a side has a 100-kg mass at one corner and a 250-kg mass at the each of the other two
a compact disk which has a radius of 60cm speeds up uniformly from zero to 43 revs in 32 swhat is the tengential
a distant galaxy is moving away from the earth with a speed that results in each wavelength received on the earth being
an inductor has a 570- reactance when connected to a 600-hz source the inductor is removed and then connected to a
a horizontal water main with a cross-sectional area of 208 cm2 necks down to a pipe of area 450 cm2 meters mounted in
a rectangular shape ferry boat is 477 m wide and 677 m long when a large loaded truck pulls onto it it sinks 365 cm
a particular garden hose has an inside diameter of 34 in the nozzle opening has a diameter of 14 in when the flow speed
a main supply pipe of radius 79 mm is connected to two pipes a and b of radii 483 mm and 340 mm respectively if the
a hydraulic jack is made with a small piston 12 cm in diameter that is used to move a large piston 61 cm in diameter if
suppose a radio station emits em waves uniformly in all directions what is the maximum power level of this radio
white light which is a mix of all visible wavelengths in the range of 400 nm to 700 nm reflects at normal incidence
a closely packed coil of 500 turns carriers a current of 20 a if the magnetic flux through the coil is 8 x 10-3 wb at
a 300 dc power supply has fully charged a 15 mf capacitor the charged capacitor is connected to a 20 mh inductor the
electric field of a sinusoidal electromagnetic wave obeys the equation e-375vm sin5971015radst199107radmxa what is the
a beam of light strikes a sheet of glass at an angle of 570deg with the normal in air you observe that red light makes
a rectangular wooden slab with length 20m width20m and height10m is used as a floating device in a play water pond the
suppose 20m long steel rods are used in 20m long slabs if on a hot day a speeding 18 wheeler can result an increase in
a hoop and a cylinder of the same mass and outer radius are rolled up an incline plane with the same speed which goes
a supertrain of proper length 200 m travels at a speed of 09 times the speed of light relative to the tunnel as it
red light n 1520 and violet light n 1538 traveling in air are incident on a slab of crown glass both colors enter the
king arthurs knights use a catapult to launch a rock from their vantage point on top of the castle wall 12m above the
an electron travels with v440 x 106 i ms through a point in space where e21 x 105 i -21 x105 j vm and b -12k t what is
an 18 mm wide diffraction grating has rulings of 710 lines per mm light is incident normally on the grating
x-ray photons wit a wavelength of 22nm are scattered off free electrons at an angle of 45 degrees what are the