1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Talja [164]
3 years ago
10

A 160-lb man carries a 5-lb can of paint up a helical staircase that encircles a silo with radius 20 ft. If the silo is 90 ft hi

gh and the man makes exactly three complete revolutions, how much work is done by the man against gravity in climbing to the top
Mathematics
1 answer:
zheka24 [161]3 years ago
5 0

Weight of man and paint = 160 + 5 = 165 total pounds.

Gravitational force is independent of the path taken so we can ignore the radius of the silo.

Work done = total weight x height

The problem says he climbs to the top so overall height is 90 feet

Work = 165 lbs x 90 ft = 14,850 ft-lbs

You might be interested in
PLEASE HELP!!!!!!!!!
Naddik [55]
The answer is A. The player runs 7 meters forward and then runs 7 meters in the opposite direction. Hope it helped!

- Shadow.
4 0
3 years ago
one bag of pretzels cost three dollars. five bags of pretzels cost $10.which has the lower unit price
Karo-lina-s [1.5K]
5 bags is cheaper because one bag is $3 and 5 bags for ten so to find the unit price the amount (10/ ) the amount of bags (5) so therefore 10/5= $2 which is smaller than the price of an individual bag
7 0
3 years ago
Simplify (3 + 2i)(7 − 5i).
erma4kov [3.2K]
Rule needed: i^2 = -1
Standard form a + bi

(3 + 2i)(7 - 5i) FOIL
3 * 7 = 21
3 * - 5i = - 15i
2i * 7 = 14i
2i * -5i = - 10i^2 = - 10 * -1 = 10
Putting it all back together.
31 - i
8 0
2 years ago
Read 2 more answers
What percent is equivalent to 8/40 ? 8% 20% 25% 40%
Nikitich [7]
First you have to get the number on the right 40 to equal 100 so do 40x2=80- +40x1.5= 100

Then do the same thing to the first number 8 so 8x2=16+8x1.5=20

then you have 20/100 right so then that number over 100 is the percent that you get ^-^ 20%
7 0
3 years ago
Read 2 more answers
Giving brainliest! This is very urgent :))
My name is Ann [436]

Answer:

3/4 and 6/8

Step-by-step explanation:

The ruler is split into 8 parts, and this point is 6/8 of the ruler, if you simplify that fraction you get 3/4.

5 0
3 years ago
Read 2 more answers
Other questions:
  • Solve the proportion for x. 4/(5x) = 8/9
    6·1 answer
  • Since stocks can be traded online, which purpose is best served by markets?
    14·1 answer
  • If a truck gets 14 mile to the gallon on average, how much does carbon dioxide is emitted into the atmosphere when the truck tra
    13·2 answers
  • Plz translate the question and solve.
    5·1 answer
  • Help!!! Thank you soooo much!!!!
    14·1 answer
  • A way to get to 19 x 9
    7·1 answer
  • Fgfgfggf11111111112334
    11·2 answers
  • Help i don’t know how to do this
    7·1 answer
  • Give a written explanation for how to find the quotient of each of the problems listed below using one of the following methods:
    11·1 answer
  • 3. Tim and Juan are both animal lovers. Tim owns 2 cats, 3 dogs, 1 Guinea pig and 3 hamsters and represents this mathematically
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!