Which is a false statement about the possible benefits of nanocars?

a. they could work together to build really complex things.
b. they could increase the efficiency of building computer chips.
c. they could increase the ability to build things from the top down.
d. they could work as medical submarines searching the body for disease.

Figure 9 on page 362 shows various motions of balls. the curved path followed by the yellow ball in b in picture b is result of a) inertia b) centripetal motion c) gravity and horizontal velocity d) linear motion

20. threshold braking in the vehicle's braking system occurs when a. the brake pedal is pushed, heel on floorboard, with full foot pressure. b. the brakes are exerting full braking power, without traction loss. c. the driver begins pushing down the brake pedal, with moderate slowdown. d. the brakes just begin to take hold with a gradual slowdown.

For waves in the ocean, the medium of the waves is a. air b. water c. energy d. a passing boat