PHYSICS
12 people are on the elevator to a height of 120 m. The average mass per person is 50 kg. What work does the lift engine do?​

Answers

Answer 1

Answer:

720000 J

Step-by-step explanation:

The formula is

Work = Force * Distance

Here we have the weight force, which is calculated as w = m * g

acceleration of gravity (g) ≈ 10 m/s

people's mass (m) = 12 * 50 kg = 600 kg

So Force = 10 m/s * 600 kg = 6000 N

Distance = 120 m

Work = Force * Distance = 6000 N * 120 m = 720000 J = 720 kJ


Related Questions

You put $300 at the end of each month in an investment plan that pays an APR of 7%. How much will you have after 18 years? Compare this amount to the total deposits made over the time period.

Answers

Answer:

take 300 time 12 months. take that nber times 18 years. then times that number by .07.

all together there is almost a $5000 difference. that is almost the total of having put 300 in the account for another 2 years without the apr

Step-by-step explanation:

Answer:

The answer is 129,216.31. Hope it helps

Step-by-step explanation:

can someone help me on this and plz explain

Answers

The answer is c, the -2 stand for the y intercept which is the point on the y vertical line, it then decreases by 3 units because of the -3 slope.

Yoli survey 100 people in your school and ask them if
thely feel your school has adequate parking. Only 30%
of the sample feels the school has enough parking. If
you have 728 students total in your school, how many
would you expect out of all the student body that felt
there was enough parking?

Answers

Answer:es, theoretically you would expect to roll only eight 5s. 3. You survey 100 people in your school and ask them if they feel your school has adequate parking. Only. 30% of the sample feels the school has enough parking. If you have 728 students total in your school, how many would you expect out of all the student body that ...

Step-by-step explanation:

Amy's fish tank has 16 liters of water in it. She plans to add 6 liters per minute until the tank has more than 88 liters. What are the possible numbers of minutes Amy could add water?

Answers

Answer:

12 minutes till 88 liters

Step-by-step explanation:

Which set of ordered pairs (x, y) could represent a linear function?
A = {(3,5), (5,1), (7, -2), (9,-6)}
B = {(2,-5), (5,1), (6,3), (7,6)}
C = {(-4,3), (-2,0), (0, -4), (2, –7)}
D = {(-3,7), (-1,5), (1,3), (3, 1)}

Answers

Answer = C

because all are not in set pairs only no. C is pair of set

3. I NEED HELP ASAP!! PLEASE PUT AND ANSWER AND STEP BY STEP EQUATION!! IF YOU DON'T KNOW THE ANSWER DON'T PUT ANYTHING!!

Write a rule for the linear function shown in the graph.


A. y = 5/3x + 1

B. y = 3x - 1

C. y = 2/5x + 1

D. y = -5/2x - 1

Answers

Answer:

D. y= -5/2x - 1

Step-by-step explanation:

Hope this helps. Sorry if it doesn't

A party cap is in the form of a frustum. The radii of its ends are 10cm and 30 cm. The volume of the cap is 9100. What is the height of the cap?

Answers

Answer:

4.46cm

Step-by-step explanation:

Volume of a frustum is expressed as;

V = (1/3) * π * h * (r₁² + r₂² + (r₁* r₂))

h is the height of the frustum

r₁ and r₂ are the radii of its ends

V is the volume

Given

V = 9100cm₃

r₁ = 10cm

r₂ = 30cm

Substitute

9100 = (1/3) * (3.14) * h * (10² + 30² + (10* 30))

9100 = 1/2(3.14)*h*(100+900+300)

9100 = 1.57*h*(1300)

9100 = 2,041h

h = 9100/2,041

h = 4.46cm

Hence the height of the cap is 4.46cm

Find the perimeter of an equilateral triangle that has an attitude of 25 inches. Round your answer to the nearest 10

Answers

9514 1404 393

Answer:

  86.6 inches

Step-by-step explanation:

The side length of an equilateral triangle is 2/√3 times the altitude. So, the perimeter is ...

  P = 3s = 3(25)(2/√3) = 50√3 ≈ 86.6 . . . . inches

whats 8/7 as a decimal?

Answers

What 8/7 as a decimal is 1.14285…

helllllllllpppppp!!!!!!

Answers

Drop=decent
Effort=exertion
Wrapped=enveloped
Move=maneuver

what is the least common multiple (LCM) of 5 and 7 plz help need my grades up​

Answers

Answer:

The least common multiple of 5 and 7 is 35

Step-by-step explanation:

Because 5 x 7 is 35

Answer:

The Least common multiple ( LCM) of 5 and 7 is 35

Step-by-step explanation:

We list the first few multiples of 5 and 7a and identify the common multiples .

The least among the common multiples is the LCM of 5 and 7.

LCM 5 and 7

Multiples of 5: 5,10,15,20,25,30,35,40,45

Multiples of 7: 7,14,21,28,35,42,49

The Least common multiple of 5 and 7 is 35 .

l hope it helps

x^2 = -8x - 7 Rewrite the equation by completing the square. What are the solutions?

Answers

1) rewrite the equation by completing the square

(X+4)^2=9

2) what are the solution to the equation

Answer A= X=-4 plus and minus 3

Round 14.6837 to the nearest HUNDREDTHS

Answers

Answer:

it's 14.68

Step-by-step explanation:

Answer:

14.68

Step-by-step explanation:

1|4|.|6|8|3|7

1=tens

4=ones

.=decimal

6=tenths

8=hundreths

3=thousanths

7=ten thousandths

3 is less than 5 so 8 stays the same

Avery is buying string and beads to make bracelets for her family and friends. She plans to divide the string into 9-inch pieces to make at least 27 bracelets. What is the minimum amount of string she needs to buy?

Answers

How big is each bracelet?

Answer:

243 inches

Step-by-step explanation:

27 bracelets at 9inches each

9x27=243 inches or 20 feet and 1/4 inches of string. Depending on how the string is sold (by the foot, by the inch, yard, etc) will determine her minimum quantity, if you want to get specific.

A single card is drawn from a standard 52 card deck.
Work out the probability of choosing the "6 of hearts".
Give your answer in its simplest form.
Please anwer this in SIMPLEST FORM!

Answers

Step-by-step explanation:

probability of 6 of hearts = 1/52

plz mark my answer as brainlist plzzzz.

hope this will be helpful to you.

Which term has the definition "The value that describes the location of a digit within a number, such
as units, tens, hundreds, etc."?

O Repeating Decimal
O Rational Number
O Terminating Decimal
O Place Value

Answers

Answer:

place value is the answer

Answer:

The answer is 'PLACE VALUE'

Step-by-step explanation:

The main mast of s sailboat is supported by a rope that extends from the top of the mast to the deck. If the mast is 23 feet tall and the rope attaches to the deck 15 feet away from the base of the mast, how long is the rope? ​

Answers

Answer:

27.46

Step-by-step explanation:

what is 3v+h v=5 h=10 which is what​

Answers

Answer:

25

Step-by-step explanation:

3(5)+10 = 15 + 10 = 25

At Jefferson Middle School, eighty-two students were asked which sports they plan to participate in for the coming year. Twenty students plan to participate in track and cross country; six students in cross country and basketball; and eight students in track and basketball. Twelve students plan to participate in all three sports. A total of thirty students plan to participate in basketball, and a total of forty students plan to participate in cross country. Ten students don't plan to participate in any of the three sports.

How many students plan to just participate in track?

Answers

Answer:

20

Step-by-step explanation:

What in a region can be affected by latitude, topography, altitude and closeness to a large body of water, jet streams and surface currents?

Answers

Answer:

Hey!

Step-by-step explanation:

Latitude, or how far one is from the equator, greatly affects the climate and weather of an area. If you live close to the equator, the climate will be warmer, while moving north or south from the equator brings a cooler climate. Altitude, or how high one is above sea level, has a similar effect–the higher the elevation, the colder the climate.

Hope this helps! :)

Have a nice day♥

what is a point-slope equation of the line with slope -12 that goes through the point (5,3)?
A. y + 3 = 12 ( x + 5)
B. y - 3 = -12 ( x -5 )
C. y - 3 = 12 ( x - 5)
D. y + 3 = -12 ( x + 5 )

Answers

the answer should be either B or D im not sure on the graphing part but both B and D equal -12

Step-by-step explanation:

Equation of a straight line is given by Y=MX+C

GIVEN POINTS (5, 3) and gradient -12, therefore

in the form of y=mx+c to get the constant, it will be 3=-12(5)+c

3=-60+c

3+60=c

c=63

y=mx+c

y=-12x+63

The radius of circle is 9. Using pie, which equation expresses the ratio of the circumference of the circle to the circle's
diameter?

Answers

Answer:

B) C/18 = PI

Step-by-step explanation:

C = PI * Diameter

C = PI * 2R

C = PI * 18

C/18 = (PI * 18)/18

C/18 = PI

repost, algebra help needed please

Answers

Answer:

y- intercept = [tex]\frac{1}{2}[/tex]

Step-by-step explanation:

Given

f(x) = [tex]\frac{1}{2}[/tex] [tex](6)^{x}[/tex]

To find the y- intercept let x = 0 , then

f(0) = [tex]\frac{1}{2}[/tex] [tex](6)^{0}[/tex] [ [tex]6^{0}[/tex] = 1 ]

      = [tex]\frac{1}{2}[/tex] × 1 = [tex]\frac{1}{2}[/tex] ← y- intercept

Lol i dont know if im right but can someone explain it to me please and thanks man

Answers

Answer:

The correct answer would be A.

Step-by-step explanation:

You're right because the translation would make it so the circles have the same center. Because they have the same center it would be easier to see the correlation between them.

I hope this helps!!

the answer for this problem is A

1. Points A and B are to be mapped onto a number line according to two equations. The solution to the equation 2 24 3 A   is the coordinate of point A. The solution to the equation 20 0.2 B   is the coordinate of point B.


(a) Solve the first equation to find the coordinate of point A. Show your work. (


b) Solve the second equation to find the coordinate of point B. Show your work.


(c) Determine the distance between points A and B. Explain.

PLZ HELP!! ASAP

Answers

Answer:

A.    2.11.5 B. 31

Step-by-step explanation:

2.11.5                          B.31

Answer: A) 2/3 * 24/1 = 2/1 * 8/1 = 16/1 = 16

 B) 20 = -B/0.2  

 20 * 0.2 = 4

 C) The distance between the two points is 20, if the point for a is 16, and the distance for b is 4, you would have to add those two together and get 20.

Step-by-step explanation:

There is a proportional relationship between the number of cookies and the number of packages 25 20 Number of Cookies 15 10 5 Number of Packages What is the constant of proportionality​

Answers

I feel the answer would be B

Step-bystep explanation:

A car dealership sells sedans and SUVs. In 2000, the ratio in which they were sold was 5:4. By 2010, the dealership had adjusted its inventory to a 2:7 ratio. If it sold 84 SUVs in 2010, how many sedans did it sell in 2000?

Answers

Answer:

60 sedans

Step-by-step explanation:

The computation of the number of sedans sold in 2000 is given below:

Given that

The ratio of sedans and SUV is 5:4

And, in 2010 its ratio is 2:7

Now in 2010, 84 SUVs sold

So

84 SUVS = 7

For total 9, it would be

= 84 × 9 ÷  7

= 108 vehicles

Now the number of sedans is

= 108 × 5 ÷ 9

= 60 sedans

What is on the twentieth floor .it goes Down 11 floors and then up 5 floors what floor is the elevator now

Answers

Answer:

6th floor

Step-by-step explanation:

plz need help



how much black hole required force
solve by using theory of relativity ​

Answers

Answer:

Solving the Equations of General Relativity for Colliding Black Holes

TOPICS:AstronomyAstrophysicsBlack HoleGeneral RelativityPopularTexas Advanced Computing CenterUniversity Of Texas At Austin

By UNIVERSITY OF TEXAS AT AUSTIN NOVEMBER 8, 2020

Lucy spent a total of $6.60 on 5 apples and a package of grapes. If the package of grapes cost $2.35, how much did each apple cost? Do not put a $ in your answer.

Each apple costs $

Answers

3 plus tax

Step-by-step explanation:

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