Acar rounds a curve while maintaining a constant speed. is there a net force on the car as it rounds the curve?
a: it depends on the sharpness of the curve and speed of the car.
b: no - it's speed is constant
c: yes

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative

An automobile steering wheel is shown. what is the ideal mechanical advantage? if the ama is 8, what is the efficiency of the steering wheel?

Which of the following is a characteristic shared by both electron and light microscopes? a. they both employ the use of objective lenses. b. both microscopes require an internal camera to visualize the specimen. c. both microscopes have a resolving power of 0.01 nm. d. they both utilize white light to magnify the specimen.