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unpolarized light of intensity i0 is incident on three polarizing filters the axis of the first is vertical that of the
a 200 gram block attached to the end of an ideal spring horizontal with force constant k 70 nm undergoes simple
an inductor a capacitor and a 640- resistor are connected in series with an ac generator the generator produces an rms
water flowing through a hose at 4 ms fills a 900l childs pool in 8 mina what is the diameter in cm of the
1 find the buoyant force acting on the he balloon the volume of the balloon might be calculated from the following the
a 2250 kg satellite used in a cellular telephone network is in a circular orbit at a height of 510 km abouve the
it takes 280 s for a small ball with a mass of 0120 kg released from rest from a tall building to reach the grounda
a pilot claims to have seen a ufo moving initially at a speed of about 484 ms in an easterly direction and then in a
assume the helium-neon lasers commonly used in student physics laboratories have power outputs of 07 mwif such a laser
an earth satellite of the mass 3500 kg moves in a circular orbit with an orbital speed of 33 kms find the elevation of
a circuit that consists of a capacitor in series with a 50 ohm resistor draws 4 a from a 250-vrms 200 hz power sourcea
an archer wishes to shoot an arrow at a target at eye level a distance of 600 m away if the initial speed imparted to
a playground merry-go-round is a disk of radius 40 m and mass 50 x 102 kg initially stationary if a child of mass 48 kg
a 160l tank contains 0430kg of helium at 160c the molar mass of helium is 400gmolhow many moles of helium are in the
a 150 kg glider attached to the end of an ideal spring with force constant k 300 nm undergoes simple harmonic motion
a railroad car of mass 33 104 kg moving at 450 ms collides and couples with two coupled railroad cars each of the
a mortar crew is positioned near the top of a steep hill enemy forces are charging up the hill and it is necessary for
the robot hooru is lost in space floating around aimlessly and radiates heat into the depths of the cosmos at the rate
the displacement vectors 385 cm at 150deg and 230 cm at 620deg both start from the origin and form two sides of a
1 the pressure in a traveling sound wave is given by p 16 pa sin 130 m-1x - 375 s-1ta what is the pressure
a transparent oil with index of refraction 121 spills on the surface of water index of refraction 133 producing a
suppose you aim to suspend in air a perfectly reflecting 4cmx4cm surface with mass m 000045kg what intensity of light
1 the length of a simple pendulum is 079 m and the mass of the bob at the end of the cord is 024 kg the pendulum
in an experiment to study magnetic induction in the north pole of a permanent magnet is moved left to right toward a