Physics, 02.06.2021 23:30 mlgrant6121
Please answer my question Carefully. This is my last points left. :(. Okay here it goes.
Part B - True or False /10 marks
1. Electricity is a form of energy.
2. The flow of electrons from one atom to the other is what creates electricity.
3. The centre of an atom is called the electron.
4. Current electricity is caused by a buildup of negative charges in one place and positive charges in another.
5. In a DC circuit, the electrons travel in one direction from the negative terminal to the positive terminal of a battery.
6. Electricity can be transformed into other forms of energy but other forms of energy cannot be transformed back into electricity.
7. Coal, natural gas, and oil are all examples of fossil fuels.
8. Canada is most reliant on renewable resources such as wind, water, and the sun, to generate electricity for its residents.
9. Thick wires have more resistance than thin wires. The lower the ohm measurement, the larger the resistance.
10. Conductors are materials that allow electricity to pass through while insulators are materials that do not allow electricity to pass through.
Answers: 1
Physics, 21.06.2019 21:30
The earth remains in orbit around the sun due to the force of gravity. how does the force of gravity exerted by the sun on the earth compare to the force of gravity exerted by the earth on the sun?
Answers: 1
Physics, 22.06.2019 12:50
Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17Ā°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.
Answers: 2
Physics, 22.06.2019 16:40
Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. which one, if either is correct? a. beryl, because low thermal conductivity results in low heat transfer. b. beryl, because low thermal conductivity results in high heat transfer. d. sapphire, because low thermal conductivity results in high heat transfer. e. neither, because low heat transfer is desirable both in summer and in winter.
Answers: 2
Please answer my question Carefully. This is my last points left. :(. Okay here it goes.
Part B - T...
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