Physics, 15.07.2020 05:01 jenhowie2944
Heat transfer between two substances is affected by specific heat and the
O chemical composition of the substances.
O state of matter of the substances at room temperature.
othermal equilibrium of the substances.
O amount of time and area of physical contact between the substances.
Answers: 2
Physics, 22.06.2019 08:30
An automobile steering wheel is shown. what is the ideal mechanical advantage? if the ama is 8, what is the efficiency of the steering wheel?
Answers: 1
Physics, 22.06.2019 17:00
Since the energy was not raising the temperature of the water during these segments, what was the energy used to do instead? your answer must include an explanation of what is happening to the molecules.
Answers: 3
Physics, 22.06.2019 19:50
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 × 10-6 ω·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 it’s resistivity when at operating temperature? explain.
Answers: 3
Physics, 23.06.2019 15:00
If it takes ashley 3 seconds to run from the batters box to first base at an average speed of 6.5 meters per second, what is the displacement she covers in that time?
Answers: 2
Heat transfer between two substances is affected by specific heat and the
O chemical composition of...
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