Let k be a body body and s ⊂k [x], deg (f)> 0 ∀f ∈s. let l1 and l2 be decomposition bodies of s. seiσ: l1 → l2 is a k homomorphism, i. a body homomorphism.

what is the meaning of f here ? what is the meaning of s here ? what is the meaning of l1 here?

An airplane flying parallel to the ground undergoes two consecutive displacements. the first is 76 km at 39.8◦ west of north, and the second is 156 km at 59.9◦ east of north. what is the magnitude of the plane’s total displacement? answer in units of km. 020 (part 2 of 2) 10.0

Need asap ‼️ 20 pts which gravitational force field diagram is drawn correctly? (answers in pictures below)

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.