How can you make a car more energy efficient?

Select one:
a. idle excessively
b. burn more fuel
c. paint the car
d. tune the engine

How have the competing explanations' experiments on atoms affected the development of the atomic model?

An object is 10 cm from the mirror, its height is 1 cm and the focal length is 5 cm. what is the image height? (indicate the object orientation by including the + or - sign with the answer.) hi = cm +1 -1 +10 -10

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is