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physics
march 2020
08

Physics Questions and Answers March 08, 2020

Expert-verified solutions to help you succeed

7.. Temperature inside a house is kept equal to 20C. Temperature outside is 10C. What about the rate of heat outflow across the walls if temperature outside decreases to OC a rises two times b decreases two times c. rises four times d. decreases four times e. there is no impact on heat flow rate Explain your choice (a formula is enough).

Give two examples of good electrical conductors and two electricalinsulators. Which processes of charging an object lets us charge something permanently?

An ideally efficient steamboat engine operates on 520 K steam in 270 K weather. How much work can it obtain when 500 J of heat leaves the steam?

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