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An AC voltage source is connected to a resistor R = 3.17 x102 Ω. The output from an AC voltage source is given by the expression V = (7.66x 102 V) sin (2πft).
What is the rms current in this circuit in Amperes?
A gas of hydrogen-like ions is prepared in a particular excited state A. It emits photons having wavelength equal to the wavelength of the first line of the Lyman series together with photons of five other wavelengths. Identify the gas and find th..
What is the speed of the arrow as it leaves the bow. At a height of 5 meters above the surface of a lake, a sound pulse is generated. The echo from the bottom of the lake returns to point of origin 0.130 s later. The air and water temperatures are ..
It takes the Mars rover 4.5 minutes to send information via a radio signal traveling at the speed of light back to Mission Control on Earth. How far away is the rover
A music store has jazz, classical, country-western and rock music albums on tapes and CDs in the following quantities finding the probability.
Use the second law of thermodynamics to explain why many poor people in developing countries live on a mostly vegetarian diet?
A large tree trunk is floating in the sea. The density of the sea water is 1040 kg/m3, What fraction of the trunk's volume is above the surface of the water
Calculate the impulse experienced when a 66 kg person lands on firm ground after jumping from a height of 2.8m. Estimate the average force exerted on the person's feet by the ground if the landing is with bent legs
The picture below shows a model of a human leg with a heavy weight on the ankle. It represents a person lying on his back doing leg-lifts to exercise the quadriceps. What is the magnitude of the gravitational torque
consider two spheres sphere 1 having a charge of -q and sphere 2 having a charge of q which are both insulating and
A magnetic field of 0.436 T and a perpendicular electric field of5.54 kV/m act on a moving electron to produce no net force. Discover the speed of the electron. Give the answer in kilo-meter/second (km/s) and to two decimal places.
The Joule-Thomson coefficient J-l is a measure of the temperature change during a throttling process. A similar measure of the temperature change produced by an isentropic change of pressure is provided by the coefficient µs,-
A positively charged rubber rod is moved close to a neutral copper ball that is resting on a nonconductin sheet of plastic. (a) Show how the charges are arranged on these spheres if they are very far from each other.
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