Which stage comes first in the life cycle of a high-mass star?
a. red giant
b. white dwarf
c. protostar
d. supernova

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.

Awind turbine is rotating counterclockwise at 0.5 rev/s and slows to a stop in 10 s. its blades are 20 m in length. (a) what is the angular acceleration of the turbine? (b) what is the centripetal acceleration of the tip of the blades at t=0s? (c) what is the magnitude and direction of the total linear acceleration of the tip of the blades at t=0s?

Newtons view of arrangement of the universe. don't copy from anywhere.