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A light bulb is wired in series with a 131-? resistor, and they are connected across a 120-V source. The power delivered to the light bulb is 22.0 W. What are the two possible resistances of the light bulb? lower value ? higher value ?
The truck is parked on the platform of a weight scale. Explain by how much does the scale reading exceed the weight of the truck and sand?
A person who weighs 684 N steps onto a spring scale in bathroom, and the spring compresses by 0.518 cm. (a) What is the spring constant? (b) What is the weight of another person who compresses spring by 0.328 cm.
Three capacitors, C1 = 3.30 µF, C2 = 7.26 µF, and C3 = 1.23 µF, are connected in series, What is the charge on the positive plate of the capacitor C2
The average intensity of sunlight at the top of the earth's atmosphere is 1385 W/m2. What is the maximum energy
A coffee-maker contains a heating element that has a resistance of 34 ohms. What is the current in the heating element
A metallic sphere has a charge of +3.7 nC. A negatively charged rod has a charge of -6.0 nC. When the rod touches the sphere, 7.2 109 electrons are transferred. What are the charges of the sphere and the rod now?
What is ratio of the applied force
What is the period of oscillation of the scale? State your reply numerically in seconds.
A Van de Graaff generator is used to demonstrate the effects of high potential. The device has a radius of 59.7 cm, How much charge does the dome hold at its maximum potential
The speed of a transverse wave on a string is 450 m/s and the wavelength is 0.18 m. The amplitude of the wave is 2mm. How much time is necessary for a particle of the string to move through a total distance of 1 km.
A somewhat longer cable replaces the old and is attached to the steel bar 5 m from its upper end, connecting to the same place on the wall as before and maintaining the same angle between the bar and the wall.
A 150g steel ball and a 300g steel ball each hang from 1.0-m-long strings. At rest, the balls hang side by side, barely touching. To what angle does each ball rebound
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