Next-door neighbors bob and jim use hoses from both houses to fill bob's swimming pool. they know that it takes 24 h using both hoses. they also know that bob's hose, used alone, takes 20% less time than jim's hose alone. how much time is required to fill the pool by each hose alone?

fill the pool with Bob's hose: 43,2 hours and 54 hours for the Jim's hose

Explanation:

It is known that the two hoses took 24 hours to fill the pool and that Bob's hose is 20% faster than Jim's, then each hose filled a volume in 24 hours totaling the total volume of the pool. then Bob's hose takes 24 hours minus 20% to fill the volume that Jim's hose completed, that is, 24h * 0.8 = 19.2 hours, so, using Bob's hose, it would take 24h plus 19.2h = 43.2 hours to fully complete the pool. on the other hand it is known that Bob's hose is 20% faster than Jim's, so 43.2 hours will be 80% of the time it would take Jim's hose to complete the pool filling, then 43.2 * 100/80 = 54 hours it would take Jim's hose to completely fill the pool.

f=ma newton's second law 7x8=56n

d₁ = displacement of tern from arctic to antarctic = 11000 miles

d₂ = displacement of tern from antarctic to arctic =   - 11000 miles

d = total displacement for the journey

total displacement for the journey is given as

d = d₁ + d₂

d = 11000 + (-11000)

d = 0 miles

t₁ = time of travel from arctic to antarctic = 3 months = 3 x 30 days = 90 days

t₂ = time of travel from antarctic to arctic = 3 months = 3 x 30 days = 90 days

t = total time of travel

total time of travel is given as

t = t₁ + t₂

t = 90 + 90

t = 180 days

average velocity is given as

average velocity = total displacement/ total time

v = d/t

v = 0/180

v = 0 miles/day