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a beam of polarized light has an average intensity of 15 wm2and is sent through a polarizer the transmission axis makes
suppose that you are traveling on board a spacecraft that ismoving with repect to the earth at a speed if 985c you
a metal cylinder with rigid walls contaions 250 moles of oxygengas the gas is cooled until the pressure decreases to
a train traveling east at a speed of 250 ms moving directly awayfrom a stationary observer a strong steady wind of 200
an fm radio station broadcasts at a frequency of 924 mhz thepower radiated from the antenna is 68 kw in one second how
a slit of width 048 mm isilluminated with light of wavelength 464 nm and a screen is placed 124 cm in front of the slit
the following charges are located inside a submarine 400 microc -900 microc 270 microc and-480 microc a calculate the
a tungsten cathode with work function 45 ev is heated torelease electrons that are then initially at rest outside the
an oil drop whose mass is determined to be 28x10-15 kg isheld at rest between two large plates separated by 10 cm when
sound propagating through air at 30oc passesthrough a vertical cold front into air that is 40oc ifthe sound has a
a spring causes a textbook attached to its end to oscillate back and forth the end of the springs position at time t is
a 10g pellet shot from a gun is moving horizontally with aspeed of 100ms when it hits and stops in a 400g woodblock the
a flywheel i 100kgm2 rotating at 500revmin is brought to rest by friction in 20 minutes what is the frictional torque
a firefighter with a weight of 715 nslides down a vertical pole with an acceleration of 285 ms2 directed downwarda what
a 35-kg box is pulled with a 55-n force at 38 degrees above the horizonal surface coefficent of kinetic friction
a thin film of polystyrene is used as a nonreflecting coating for fabulite the index of refraction of polystyrene is
a spacecraft is in a circular orbit of radius 33104 km arounda 191030 kg pulsar the magnetic field of the pulsar at
a tuning fork vibrating at 514 hzfalls from rest and accelerates at 980 ms2 how far below the point of release is the
a bicycle has wheels with adiameter of 0640 m it accelerates uniformly and the rate ofrotation of its wheels increases
masses 2m 4m and 3m are located at the points 1-1 2 0and 3 -1 respectively find the centre of mass of this
0085 nm photon collides with astationary electron after the collision the electron movesforward and the photon recoils
a mass attached to a spring experiences a displacement x 3cost 4sint what is the amplitude of the simple harmonic
a parallel plate capacitor has a voltage of 111v appliedacross its plates then the voltage source is removed what is
two charged particles areprojected in the same direction into a magnetic field perpendicularto their velocities if the
when red light in a vacuum is incident at the brewster angleon a certain type of glass the angle of refraction is