A hiker begins a trip by first walking 22.2 km southeast from her base camp. On the second
day, she walks 40.1 km in a direction 65° north
of east, at which point she discovers a forest
ranger's tower.
Determine the y component of the total
displacement.
Answer in units of km.

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.

Based on the concept of the wave-like nature of light, huygens' theory of light postulates that the more light was "bent" by a substance the slower it would move while traversing across that substance. a) deflection b) interference c) refraction d) resonance

Where do magnetic lines of force enter earth?