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A sinusoidal voltage E=200sin314t is applied to a resistor of 10 ohm resistance. Calculate
(i) r.m.s of the voltage.
(ii) rms of the current
(iii) power diddipated as heat in watt.
A projectile is fired in such a way that its horizontal range is equal to 12 times its maximum height. What is the angle of projection
Water flows though a 20mm diameter pipe at 3L/min and static pressure of 100mmHG. What is the wall stress of the pipe. The pipe is 1.5mm thick
A balloon carrying a basket is descending at a constant velocity of 20.0m/s. At the instant the rock hits the ground, how far is it from the basket
An object is 24.2 cm from the center of a silvered spherical glass Christmas tree ornament 5.90 cm in diameter. What is the magnification of its image
q1. when a surface is irradiated with light of wavelength 4950 a a photo current appears that vanishes if a retarding
An artificial lens is implanted in a person's eye to replace a diseased lens. The distance between the artificial lens and the retina is2.82cm. What is the power of the implanted lens
a 600 ton Boeing business jet is flying at 500 mph at a constant altitude of 35,00 ft. if the jet is holding passengers as cargo amounting to a weight of 37 tons, what is the lifting force acting on the jet provided by the air?
A curve in a highway has radius of curvature 120 m and is banked at 2.8°. what is the safest speed to go around the curve
Three capacitors all have the same capacitance. When they are wired in series, the equivalent capacitance is 57 ?F. what would the charge on the capacitors be
During the launch from a board, a diver's angular speed about her center of mass changes from zero to 4.50 rad/s in 220 ms. FIND the magnitudes of her average angular acceleration
a jet plane has a takeoff speed of vto 74 ms and can move along the runway at an average acceleration of 2.0 ms2. if
A rod of length 0.850 m is attached to a pivot at one end. A force F of 2.30 N is applied to the end of the bar opposite the pivot. The force makes an angle of 65.0o with the bar. (The ? in the figure is the angle for the "line of action" of the f..
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