Why is inverse of tan used for direction of accleration.

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical

Write a polynomial function with the given zeros x= -1,0,2show your work

What is the efficiency of an engine that does 80 j of work and exhausts 320 j of heat while taking in 400 j of heat ? a. 10% b. 20% c. 80% d. 25%