Suppose mercury had 5-to-3 spin-orbit coupling and that its sidereal period remained 88 days, as now. you observe the sun directly overhead in the mercurian sky and then observe again from the same location 88 days later. where will the sun be in the sky? (mercury, like the earth, rotates toward the east.)
a) below the eastern horizon
b) below the western horizon
c) directly overhead again
d) directly on the opposite side of the planet

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.