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A 40 mH inductor with 4.0 resistance is connected in series to a 20 µF capacitor and a 60 Hz, 30-V (rms) source. Calculate the following value.
(a) rms current
A
(b) phase angle
°
(c) power dissipated in this circuit
W
A round loop of diameter 12 cm, carrying a current of 0.40 A, is placed inside a magnetic field = 0.20 T + 0.40 T . The normal to the loop is parallel to the unit vector = -0.60 - 0.80 . What is the potential energy of the loop?
Small spheres of diameter 1.03 mm fall through 20°C water with a terminal speed of 1.00 cm/s. Calculate the density of the spheres
A concave spherical mirror has a radius of 20 cm. A real object is placedon the optical axis 15 cm from the mirror. Compute where the image is and describe i
A solar cell generates a potential difference of 0.95 V when a 380 ? external resistance is connected across it, What is the internal resistance of the solar cell
An object has a total energy of 5.0 x 10^15 J and a kinecticenergy of 2.0 x 10^15 J. What is the magnitude of the object's relativitic momentum
A nozzle is now attached to the end of the hose. If the nozzle diameter is one-third the diameter of the hose, what is the speed of the water leaving the nozzle
a rocket blasts off from rest and attains a speed of 49 m/s in 14 s. What is the astronaut's apparent weight during take off
An astronaut weighs 185 lb on earth. What is her weight on the moon, where the acceleration due to gravity is 5.28 ft/s2
A student in an undergraduate physics lab is studying Archimede's principle of bouyancy. The student is given a brass cylinder and using a triple beam balance finds the mass to be 1.25 kg
A dampled harmonic oscillator is made from a 0.8kg mass on a k=14N/m spring with a damping constant of 400g/s, What is the energy of the oscillator after one oscillation
A uniform cylinder (radius = 10.0 cm) is mounted so as to rotate freely about a horizontal axis that is parallel to and 5.0 cm from the axis of the cylinder, what's the angular speed of the cylinder
The primary coil of a transformer hasN1=360turns, and the secondary coil hasN2=1 890turns. what rms voltage is developed across the secondary coil
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