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
r-ruslan [8.4K]
3 years ago
12

A woman exerts a horizontal force of 10 pounds on a box as she pushes it up a ramp that is 8 feet long and inclined at an angle

of 30 degrees above thehorizontal.
Find the work done on the box.

Work: ft-lb
Mathematics
1 answer:
klasskru [66]3 years ago
8 0

Answer:

The work done on the box is 69.28 ft-lb

Step-by-step explanation:

Work done = force × height

Force (F) = 10 pounds

The height (h) is calculated using trigonometric ratio

Length of ramp (hypotenuse side) = 8 feet

Angle of inclination above the horizontal = 30°

h/8 = cos 30°

h = 8cos 30° = 8×0.8660 = 6.928 feet

Work done = F×h = 10 pounds × 6.928 feet = 69.28 ft-lb

You might be interested in
Suppose you write a system of equations to find out which of two video stores is cheaper to join, depending on the number of vid
SCORPION-xisa [38]
The right answer is c
6 0
3 years ago
Make g the subject of this relation​
zhannawk [14.2K]

Answer:

see explanation

Step-by-step explanation:

Simplify the radical

\frac{U}{\frac{1}{f}+\frac{1}{g}  }

= \frac{U}{\frac{g+f}{fg} }

= \frac{Ufg}{g+f}

Square both sides

T² = \frac{Ufg}{g+f} ( multiply both sides by (g + f) )

T²(g + f) = Ufg ( distribute left side )

T²g + T²f = Ufg ← subtract Ufg from both sides

T²g - Ufg + T²f = 0 ← subtract T²f from both sides

T²g - Ufg = - T²f ← factor out g from each term on the left side

g(T² - Uf) = - T²f ← divide both sides by (T² - Uf)

g = - \frac{T^2f}{T^2-Uf} = \frac{T^2f}{Uf-T^2}

6 0
3 years ago
64 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Svetradugi [14.3K]
So the formula y= ax^2 first you must flip the equation so that gives us ax^2= y
Then divide both sides by x^2  giving us  <span><span>a<span>x^2/x^2 = y/x^2  so we would end up with  a= y/x^2  </span></span><span /></span><span><span /></span>
5 0
3 years ago
Use a pattern to answer the question.
weeeeeb [17]
4069
1st week 4x4=16
2nd week 4x16=64
3rd week 4x64=256
4th week 4x256=1024
5th week 4x1024=4096
6th week =4096
3 0
3 years ago
Your school is installing new turf on the football field. A coordinate plane has been superimposed on a diagram of the football
Aneli [31]

Answer:

Step-by-step explanation:

1) length of the field = 18 unit= 18*20=360 ft

2) circumference = 2(l+w)

2*(18*20+8*20)=1040

3) Area of the field = 18*8 units = 18*20*8*20ft^2 = 57600ft^2

Cost for the entire area= 57600*2.69= 170,000$

No it doesn't

3 0
3 years ago
Other questions:
  • A 2018 poll of 3634 randomly selected users of a social media site found that 1799 get most of their news about world events on
    7·1 answer
  • What is a rational number between 10.2 and 10.3
    8·2 answers
  • Find the value of x to the nearest tenth
    5·2 answers
  • Helppppppp I need the answer now
    15·1 answer
  • How do i solve this? what is the answer?
    12·1 answer
  • Determine the equation for the parabola graphed below?
    8·2 answers
  • Round 7, 488 to the nearest thousands​
    14·2 answers
  • Which of the following numbers has the greatest value?
    15·1 answer
  • Convert 123000000 milligram into kilogram ​
    12·1 answer
  • Kylie bought 5 rolls of paper towels. She got 411.2 meters of paper towels in all. How many meters of paper towels were on each
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!