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for a process, if the enthalpy change of a system is 1.25 ' 10^5 j and the entropy change...
Physics, 14.10.2019 09:30 jamarstand
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for a process, if the enthalpy change of a system is 1.25 ' 10^5 j and the entropy change is 300.0 j/ can someone me calculate the free energy change of the system at 290 k?
Answers: 3
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The heater element of a 120 v toaster is a 5.4 m length of nichrome wire, whose diameter is 0.48 mm. the resistivity of nichrome at the operating temperature of the toaster is 1.3 Ă 10-6 Ď¡m. the toaster is operated at a voltage of 120 v. (a) what is the power drawn by the toaster? (b) if the cost of electricity is 12 ¢ per kilowatt-hour, and it takes 2 minutes to toast bread, how much does it cost for toasted bread? (c) when the heater element is at room temperature, is the resistivity in the nichrome wire greater than, less than, or equal to itâs resistivity when at operating temperature? explain.
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In the illustration, which two simple machines are being used to enable the student to reach the door? a. inclined plane and pulley b lever and wheel-and-axle c pulley and lever d wheel-and axle and inclined plane
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