Question 4 1 pts
The actual efficiency of an engine can be calculated using the ratio of
the energy of the reservoir compared to the engine intake energy.
Calculate the ideal efficiency and the actual efficiency of a heat engine if
the engine takes in 100 kJ of energy from a source at 810 K and expels
45 kJ to a reservoir at 350 K. Round to the nearest hundredth.
Ideal = 0.26
Actual - 0.45
Actual - 0.65
Ideal - 0.57

It is may 5 and you are somewhere in the northern hemisphere. if you determine that the noon sun is 51 degrees above your southern horizon, what is the latitude of your location

Write a polynomial function with the given zeros x= -1,0,2show your work

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.