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In a right angle triangle ABC, angle ABC = 90o, AB = 2 meter, and angle ACB is 41.81o. A point charge of 5 x 40 nC is placed at point C and another point charge 4 x 40 nC is placed at point A. Determine the electric field at B.
initially unpolarized light is sent into a system of three polarizing sheets whose polarizing directions make angles of ?1 = ?2 = ?3 = 51° with the direction of the y axis, What percentage of the initial intensity is transmitted by the system
A spacecraft flies towards the Earth at a speed of 0.8c and shines a laser at an observer on Earth. At what speed would the laser light be moving
q1. all through its evolution a star of 1 solar mass the mass of our sun expands to 3.33 times its original radius.
A wheel released from rest is rotating with constant angular acceleration of 2.2 rad/s2. Through what angle has the wheel turned
a generator has a 150-turn square coil 4cm on a side.a find the peak emf in this coil when its rotating at 110hz in
The two masses in the Atwood's machine shown in the figure have an initial speed of = 0.25 , and is moving upward. How high does rise above its initial position
a uniform cylindrical turntable of radius 2.00 m and mass 26.8 kg rotates counterclockwise in a horizontal plane with
A particle (at rest) of mass 900 MeV/c^2 decays into three particles of equal rest mass of 100 MeV/c^2, find the energies and momenta (including directions) of the three particles
The position of a cart that is oscillating on a spring is given by the equation x= 12.3 cm cos [(1.26 s-1)t] . When t= .805s , what are the (a) velocity and (b) acceleration of the cart ?
During spin-dry cycle of a washing machine, the motor slows from 90 rad/s to 30 rad/s while the turning the drum through an angle of 180 radians. What is the magnitude of the angular acceleration of the motor.
A uniform disk of radius 0.495 m and unknown mass is constrained to rotate about a perpendicular axis through its center. Find the mass of the disk
A series AC circuit contains a resistor, an inductor of 240 mH, a capacitor of 4.80 µF, and a source with ?Vmax = 240 V operating at 50.0 Hz. Calculate the capacitive reactance
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