Just like an hour, a degree is also divided into 60 minutes, each of which is divided into 60 seconds - so, one degree has 3600 seconds. Often called "arc-seconds", to avoid confusion.
10 seconds
1ºF = ~255.93K
about 111
about 111.1 km
111.1 km (rounded)
1 degree = 0.017453 radians (to 6 dp)
0.104 btu
The units are incompatable. Millimetres are linear units, degrees are angular units
1 degree celsius
1degree
10
No