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a voltage source given by v100sin754t is connected in series to a 20ohms resistor a 01x10-6 uf capacitor and 4x10-3
unpolarized light with an average intensity of 7500wm2 enters a polarizer with a vertical transmissionaxis the
an iron meteorite melts when it enters the earths atmosphere if its initial temperature outside of the atmosphere was
an ac voltage with an amplitude of 129 v is applied to a series combination of a 163 f capacitor a 121 mh inductor and
a metal wire of mass m can slide without friction on two parallel horizontal conducting rails the rails are connected
if a projectile is launched vertically from the earth with a speed equal to the escape speed how far from the earths
a 22 g dried sample of food is placed in an aluminum bomb calorimeter and burned completely the device consists of an
a 027-m-thick sheet of ice covers a lake the air temperature at the ice surface is -10degc in five minutes the ice
a spring gun is made by compressing a spring in a tube and then latching the spring at the compressed position a 497 g
a ray of light is incident on the surface of a block of clear ice at an angle of 440deg with the normal part of the
an underwater scuba diver sees the sun at an apparent angle of 360deg from the vertical what is actual direction of the
a pendulum of length l 421cm and mass m169g is released from rest when the cord makes an angle of 654 degrees with the
a beam of light traveling in air strikes a very smooth water surface in a glass bowl at an angle of incidence of 35
a 200 loop square coil 08m to a side lies in the xy plane the current in each loop of the coil is 8a clockwise the coil
a series rcl circuit contains a 470 ohm resistor a 200 microf capacitor a 400 mh inductor and a generator with a
a converging lens with two convex surfaces has a front surface with radius of curvature of 113 cm the back surface has
the electron in a hydrogen atom orbits the proton at a radius of 0053 nm what is the electric field due to the proton
a transmission line that has a resistance of 05omega per km of length is used to transmit 200 mw across 300 miles if
a solenoid is made by wrapping a wire so that it makes a solenoid coil having 500 turns of diameter 800 cm and length
a 10 mm diameter mall bearing has 20 x 109 excess electrons what is the ball bearings
a small plastic sphere with a charge of - 50 nc is near another small plastic sphere with a charge of - 12 nc if the
a firecracker explodes in reference frame s at t 20 s a second firecracker explodes at the same position at t 50s
white light is the incident from air onto a transparent material at an angle of 40 degrees the angles of refraction for
a movie camera with a single lens of focal length 70 mm takes a picture of a person standing 29 m away if the person is
a concave shaving mirror has a radius of curvature of 399 cm it is positioned so that the upright image of a mans face