![dannyelleparker9680](/avatars/33151.jpg)
dannyelleparker9680
28.01.2020 •
Mathematics
Afloor polisher has a rotating disk that has a 19-cm radius. the disk rotates at a constant angular velocity of 1.6 rev/s and is covered with a soft material that does the polishing. an operator holds the polisher in one place for 43 s, in order to buff an especially scuffed area of the floor. how far (in meters) does a spot on the outer edge of the disk move during this time?
Solved
Show answers
More tips
- G Goods and services How to Choose a Vacuum Cleaner That Will Suit You?...
- F Food and Cooking Discover the most delicious spaghetti with these tips...
- P Philosophy How did the concept of module arise in computer science?...
- F Food and Cooking How to Cook Julienne? Recipes and Tips...
- D Dating, Love, Relationships 10 Useful Tips on How to Survive a Breakup?...
- F Food and Cooking Apple Cider Vinegar: The Ultimate Health and Beauty Solution...
- C Computers and Internet Е-head: How it Simplifies Life for Users?...
- F Family and Home How to Choose the Best Diapers for Your Baby?...
- F Family and Home Parquet or laminate, which is better?...
- L Leisure and Entertainment How to Properly Wind Fishing Line onto a Reel?...
Answers on questions: Mathematics
- M Mathematics Apool is in shape of a rectangular prism. on monday water was pumped out of the pool at a constant rate starting at 12: 00 pm to 12: 15 pm the water in pool was 45 inches...
- M Mathematics Factor the trinomial x^2 + 15x + 56...
- M Mathematics One serving of mike’s crackers has 150 calories and a mass of 30 grams. how many calories are in 6 grams of the crackers?...
- M Mathematics Which of the following polygons can be constructed using six equilateral triangles? a. hexagon b. pentagon c. square d. octagon...
- M Mathematics Hey can you me posted picture of question...
- M Mathematics Achemist measured the temperature change in a container of heated oil as it cooled. she recorded a change of −19.5 degrees celsius in 2.4 minutes. what is the average change...
- M Mathematics Rewrite with only sin x and cos x. sin 2x - cos 2x select one: a. 2 sin2x - 2 sin x cos x + 1 b. 2 sin x c. 2 sin2x + 2 sin x cos x - 1...
- M Mathematics How much work is done by a man who uses a force of 7 newtons to push a box 3 meters across the room? explain....
- M Mathematics Gilberto needs to purchase baseballs and bats for his youth baseball league. he ll need at least 15 pieces of equipment, but he only has $435 to spend. baseballs cost $20...
- M Mathematics Write in standard form an equation of the line passing through the given point with the given slope . slope = -7; (-2,-2) a.-7x + y =-16 b. 7x +y =16 c. 7x -7y =-16 d. 7x...
Ответ:
Arc length(S) = 82.14m
Step-by-step explanation:
Given: Radius=19cm= 0.19m , angular velocity =1.6 rad/s , time = 43secs
As the disk is rotating,angular displacement=s/r
Where r=radius and s=arc length
The rate of change of the angular displacement represents the angular velocity .w=angular displacement/ time
w=(1.6)(2×3.142)
w=10.054 rad/s
Angular displacement =at
Angular displacement =10.054 ×43=432.32rad
S=angular displacement × radius
S= 432.32 ×0.19
S= 82.14m
Ответ:
$15.00 ÷ 2 = $7.50 per yard
$37.50 ÷ 5 = $7.50 per yard
As both prices per yard are the same, the answer is: Yes, these fabrics have the same unit cost.