Use the worked example above to you solve this problem. a hiker begins a trip by first walking 22.5km southeast from her base camp. on the second day she walks 37.0 km in a direction 60.0° north of east, at which point she discovers a forest ranger's tower.
(a) determine the components of the hiker's displacements in the first and second days.
ax = km
ay = km
bx = km
by = km
(b) determine the components of the hiker's total displacement for the trip.
rx = km
ry = km
(c) find the magnitude and direction of the displacement from base camp.
magnitude km
direction ° north of east

Iron reacts with sulfur to form iron sulfide. if 60 grams of iron reacts with sulfur to produce 90 grams of iron sulfide, how much sulfur has been used in the chemical reaction?

Astudent is performing an experiment comparing sound and light waves. the student gathers the following data. what conclusion does the student most likely make based on this data? light waves always travel the same speed; however, the speed of sound is determined by the medium that it travels through. all sound waves always have the same energy, so the temperature of the medium does not affect wave speed. light needs to vibrate particles, so it travels fastest in tightly packed solids, while sound does not need a medium, so it travels fastest in a gas. tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.

22. the effect of threshold braking is to a cause skids. b. lock wheels. c. prevent locking of wheels. d. increase stopping distance.