If you could help ASAP please

Select the word from the list that best fits the definition classification of most stars on the h-r diagram

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.

Aclarinetist, setting out for a performance, grabs his 3.350 kg clarinet case (including the clarinet) from the top of the piano and carries it through the air with an upward force of 24.65 n. find the case's vertical acceleration. indicate an upward acceleration as positive and a downward one as negative.