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When a resistor is connected across the terminals of an acgenerator (111 V) that has a fixed frequency, there is a current of0.351 A in the resistor. When an inductor is connected across theterminals of the same generator, there is a current of 0.459 A inthe inductor. When both the resistor and the inductor are connectedin series between the terminals of this generator, what is(a) the impedance of the series combination and(b) the phase angle between the current and the voltage of the generator? Note: The ac current and voltage are rms values and power is an average value unless indicated other wise.
Water has a mass per mole of 18.0 g/mol, and each water molecule(H2O) has 10 electrons. How many electrons arethere in 3 liters of water?(A liter is 1.00 multiplied by 10-3 m3) What is the net charge of all these electrons?
How is single slit diffraction pattern and intensity affected by the width of the slit, the distance of the slit from the screen, Which of these parameters affects the pattern most
A torsion pendulum is constructed of a copper rod of radius 3 mm and length 50 cm. what is the period of oscillation
A small statue has a height of 3.4 cm and is placed in front of a concave mirror. Find the focal length of the mirror
The helicopter in the drawing is moving horizontally to the right at a constant velocity. The weight of the helicopter is W=47800 N. What is the magnitude of the lift force
A block of mass m is slides down africtionless inclined surface. The height of the block changes from h at the top to zero at the bottom of theincline. The block then slides across a frictionless horizontal surface and collides elastically with as..
A ball is launched at 4.43 m/s at an angle of 66 degrees above teh horizontal and the time of flight is 0.84 s, then what is the maximum height of the ball
A coil of wire is connected to a galvanometer. When a bar magnet is moved in and out of the coil, the galvanometer records a current. The current results because: pick the best answer? the coil acts like a transformer.
What is the launch speed of a projectile that rises vertically above the Earth to an altitude equal to five times the Earth's radius before coming to rest momentarily
A small object, which has a charge q = 7.4 µC and mass m = 9.85 10-5 kg, is placed in a constant electric field. Determine the magnitude of the electric field
What is effectiveness of battery as an energy storage device
A proton and an electron are fixed in space with a separation of 957 nm. Calculate the electric potential at the midpoint between the two particles. Find the magnitude and direction of the electric field at the same point.
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