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An incandescent lightbulb has a tungsten filament that is heated to a temperature of 4.00 x103 K when an electric current passes through it. If the surface area of the filament is approximately 1.00 x 10-4 m2 and it has an emissivity of 0.42, what is the power radiated by the bulb?
A proton traveling 3.0 E 6 m/s enters half way in a capacitor and travels 2.00 E -3 meters before crashing into the bottom plate, What is the voltage applied to the capacitor from the battery
A 6.0-cm-diameter cylinder of nitrogen gas has a 4.0-cm-thick movable copper piston. How many gas molecules are in the cylinder
john wants to measure self-esteem among victims of domestic violence before and after they complete an 8-week program
A 755 n box rests on a floor with a coefficient of kinetic friction of 0.600 and a coefficient of static friction of -. 0.800. What horizontal force is required to start moving the box
Two forces, F1 and F2 act at a point. F1 has a magnitude of 8.80N and is directed at an angle of 62 degrees above the negative X axis in the second quadrant. What is the magnitude of the resultant force
A component with 19 Ω resistor is rated for use at power levels not exceeding 11 w. find how much current safely flow through the component
The wavelength of visible light varies from 0.40 ?m to 0.70 ?m as the color of the light changes from violet to red. Calculate the energy of a photon whose wavelength is 0.43 ?m
At one instant a bicyclist is 53m due east of a park's flagpole, going due south with a speed of 12m/s. Then 37s later, the cyclist is 53m due north of the flagpole, going due east with a speed of 12m/s. For the cyclist in this 37s interval.
Calculate the frequency and period of a pendulum of mass 10 kg and a) length .5 meters, b) length 5 meters.
q1. a plot of pressure as a function of volume is known as a pv diagram. pv diagrams are often used in analyzing
Light from a laser strikes a diffraction grating that has 4250 grooves per centimeter. Find the wavelength of the laser
A flask with a volume of 2.40L , provided with a stopcock, contains ethane gas (C2H6) at a temperature of 284 K and atmospheric pressure 1.013×105 Pa. What is the final pressure of the ethane in the flask
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