youtubeviewer109
10.09.2020 •
Physics
One afternoon, a couple walks three-fourths of the way around a circular lake, the radius of which is 2.08 km. They start at the west side of the lake and head due south to begin with. (a) What is the distance they travel? (b) What is the magnitude of the couple’s displacement? (c) What is the direction (relative to due east) of the couple’s displacement?
Solved
Show answers
More tips
- F Food and Cooking 10 Ideas for a Wedding Anniversary Gift...
- H Health and Medicine Hangover: How to Get Rid of It Quickly?...
- S Style and Beauty How to Choose the Right Fur Coat and Avoid Regrets?...
- C Computers and Internet How to Create a Folder on Your iPhone?...
- G Goods and services How to sew a ribbon: Tips for beginners...
- F Food and Cooking How to Make Mayonnaise at Home? Secrets of Homemade Mayonnaise...
- C Computers and Internet Which Phone is Best for Internet Surfing?...
- F Food and Cooking Everything You Need to Know About Pasta...
- C Computers and Internet How to Choose a Monitor?...
- H Horoscopes, Magic, Divination Where Did Tarot Cards Come From?...
Answers on questions: Physics
- P Physics The diagram shows the electric field in the vicinity of a charge. One positive charge labeled Y. Vectors start perpendicular to the surface and spread out in all directions. Directly...
- P Physics A 68.5kg astronaut floating motionless next to the space station throws a 2.25kg tool away from her at 3.20m/s. With what speed and direction will the astronaut begin to move?...
- P Physics If two people are running at the same speed in the same direction. One person is one meter ahead of the other. The person in front throws a ball to the person slightly behind....
- P Physics _ is (are) the type of electromagnetic wave(s) with a wave length between 700 and 400 billionths of a meter....
- P Physics The player who is serving continues to serve until he/she or their team commits a fault. True or False...
- P Physics Train car A is at rest when it is hit by train car B. The two cars, which have the same mass, are stuck together and move off after the collision. How does the final velocity...
- P Physics What is light? Let s tallk about anything...
- P Physics Erosion a). is always a destructive process b). builds river deltas and sand dunes c). is the breakdown of rock and soil on earth s surface d). happens more slowly in warm climate...
- P Physics Does a resulting force cause acceleration? true or false?...
- P Physics Rutherford s theory was identified by? a: using a beam of particles and detecting the scattering of the particles after they hit gold foil b: holding a magnet next to a beam of...
Ответ:
Explanation:
a ) Distance travelled by them = 3 / 4 x 2π R where R is radius of the circular path .
= .75 x 2 x 3.14 x 2.08
= 9.8 km approx
b )
Displacement = shortest distance between final and initial position
= √2 R
= 1.414 x 2.08
= 2.94 km approx
c ) The direction of displacement is towards north east
so the direction is 45° north of east .
Ответ:
(a). The distance is 9.80 km.
(b). The magnitude of the couple’s displacement is 2.94 km.
(c). The direction of the couple’s displacement is 45°.
Explanation:
Given that,
Radius of lake = 2.08 km
(a). We need to calculate the total distance
Using formula of distance
Put the value into the formula
(b). We need to calculate the magnitude of the couple’s displacement
Using formula of displacement
(c), The direction of the displacement is given by
Using formula of direction
Hence, (a). The distance is 9.80 km.
(b). The magnitude of the couple’s displacement is 2.94 km.
(c). The direction of the couple’s displacement is 45° relative to the east.
Ответ:
C)winds and increased rain
Explanation: