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The following table gives the reactance and rms voltage across the elements of a series RCL circuit: Circuit element Reactance Voltage across element resistor 2.00 × 102 : 86 V capacitor 6.63 × 102 : 285 V inductor 3.77 × 102 : 162 V
What is the power factor for this circuit? A) 0.40 B) 0.57 C) 0.81 D) 1.4 E) 5.5 Ans: B
What is the average power consumed by the circuit?
A rectangular loop of wire with sides 0.20 and 0.35 m lies in a plane perpendicular to a constant magnetic field. Assuming the loop is complete, in which direction will any induced current flow
consider an object with s12cm that produces an image with s115cm. note that whenever you are working with a physical
The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.67 m and 1.05 m, respectively. The respective rotational speeds are 456 rev/min and 4,130 rev/min.
a mass m neutron has elastic collision with a mass m' stillnucleus. How much kinetic energy does the neutron lose
A charge of q = +7.50 µC is located in an electric field. The x and y components of the electric field are Ex = 4.80 103 N/C and Ey = 7.40 103 N/C, respectively. (a) What is the magnitude of the force on the charge? (b) Determine the angle that th..
Andy drops a ball from a height of 1.28 m. The ball hits the ground and rebounds to 40 percent of its original height. What is the y-component of the velocity of the ball the instant before it hits the ground? What is the y-component of the velocity ..
A bowling ball of mass 7.2kg and radius 10cm rolls without slipping down a lane at 2.6m/s. Calculate its total kinetic energy
A baseball can be thrown from the outfield in two manners, one withno bounce at all and the other with a single bounce. Theorysays that the ball arrives sooner after the first bounce.
An unknown material has a normal melting/freezing point of -25.1° C, and the liquid phase has a specific heat capacity of 160 J/(kg · C°). What is the latent heat of fusion of the unknown material
It takes a force of 109 Newton to lift a stone straight up. This force gives the stone an acceleration of 12 m per sec quaked. Compute the mass of the stone
if only electric forces are important conservation of mechanical energy tells us kinit uinit kfinal ufinal. in
welding machine draws a 18A of current at 240V. When it is inadvertently connected to a 120V outlet, the current in it is 10A. Is the machine's resistance ohmic
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