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user100 [1]
2 years ago
8

Nathan lifts a 5 lb. box 2 feet. How much work has he done?

Mathematics
1 answer:
vekshin12 years ago
7 0

Answer:

10 ft-lbs.

Step-by-step explanation:

Given data

Weight of box=  5 lb

Height moved = 2 feet

We know that the expression for work done is

Work done= Force * Distance

Work done= 5*2

Work done= 10 10 ft-lbs.

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PLEASE PLEASE PLEASE PLEASE SHOW YOUR WORK
stellarik [79]

Answer:

9.11x10^-28

Step-by-step explanation:

1.67x10^-24 would be .000000000000000000000000167 and 9.11x10^-28 would be .0000000000000000000000000000911 and because it has more zeros in front of it, 9.11x10^-28 would be the smaller mass

I'm 99.99999999999999999% sure this is correct.

6 0
3 years ago
Rosa can clean a house in 7 hours. When Rosa and Amy work together, they can clean a house in about 4.2 hours. About how long wi
Step2247 [10]
First we will calculate rate of work of rosa and amy.
work done by rosa in time t=t*1/7
Work done by Amy and rosa=t(1/7+1/4.2)

t/7+t/a=t/4.2
t=10.5 hr

Always keep remember those formula or logic below

Work rate × Time to finish the job = 1 job done

Work rate = (1 job done) / (Time to finish the job)

Time of doing the job = (1 job done) / (Work rate)



4 0
2 years ago
1) What is the surface area?<br> 1 ft<br> 8 ft<br> 4 ft
WITCHER [35]

Answer:

88 ft^2

Step-by-step explanation:

For a rectangular prism with dimensions 1 ft by 8 ft by 4 ft, there are two opposite faces with dimensions

<em>1 ft by 8 ft, </em>

two opposite faces with dimensions

<em>1 ft by 4 ft, </em>

and two opposite faces with dimensions

<em>4 ft by 8 ft.</em>

We find their area and add them.

SA = 2 * 1 ft * 8 ft + 2 * 1 ft * 4 ft + 2 * 4 ft * 8 ft

SA = 16 ft^2 + 8 ft^2 + 64 ft^2

SA = 88 ft^2

5 0
2 years ago
Data management:<br><br> Find n if <br><br> C ( n+ 2 , 2 ) = 36
Lana71 [14]
Please, Karla, explain what "C" and "n" represent.  Are you talking about combinations (for example, n+2 objects taken n at a time?  Or is C some kind of function?  I don't quite see the relationship of this problem to 'data management.'
3 0
3 years ago
3+7=7+3 is an example of which property
-Dominant- [34]
Commutative because your switching the order
6 0
3 years ago
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