Ingrid is moving a box from the ground into the back of a truck. She uses 20 N of force to move the box
5 meters. If she uses an inclined plane to reduce her force to 10 N which of the following statements will
be true?
She will decrease the amount of work done.
She will make her work efficiency 100 percent.
She will increase the distance the box moves.
O All of the above.

Ingrid Is Moving A Box From The Ground Into The Back Of A Truck. She Uses 20 N Of Force To Move The Box5

Answers

Answer 1

She will decrease the amount of work

Without the ramp, Ingrid would have to, in no particular order,

• push the box along the ground, which amounts of (20 N) (5 m) = 100 J of work

• lift the box up some height h with a force at least equal in magnitude to the weight of the box mg, so that the work done in the lifting is mgh (i.e. the energy required to lift the box with constant speed to a height h)

and the total work done in this way would be (100 + mgh) J.

With the ramp, Ingrid would instead push the box a length equal to the hypotenuse of the right triangle formed by the two displacements above. Recall that the hypotenuse of any right triangle is always shorter than the sum of its legs' lengths. (This eliminates the third and fourth options.) So if the length of the ramp, or total displacement of the box along the ramp, is s, then the work done by pushing up the ramp is (10 N) s = 10s J


Related Questions

Emma measured a restaurant and made a scale drawing. The scale of the drawing was 2 centimeters : 1 meter. If the actual width of the restaurant's kitchen is 20 meters, how wide is the kitchen in the drawing?

Answers

Answer:

20000 meters

Step-by-step explanation:

the question is in the photo

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Answer:

d

Step-by-step explanation:

D ksjsjsjsjdjdjsjsjsjsjsjsjsjjsjjs

Find the area...

A. 54 sq in
B. 60 sq in
C. 72 sq in

Answers

A. 54 sq in

6 in. times 9 in. = 54 sq in

Answer:

60 sq inches

Step-by-step explanation:

Okay, here we are given two different shapes. One being a rectangle, and the other being a triangle. We are trying to find the area of the two shapes combined and in order to do so here are the steps:

The area of a rectangle is as follows:

[tex]b*h=A[/tex]

The area of a triangle is as follows:

[tex]A= \frac{1}{2} b*h\\or \\A=\frac{b*h}{2}[/tex]

Note: Notice how rectancgles have coensideing sides. Meaning that the opposite side of 9in will be 9 in and the opposite side of 6 in will be 6in.

Now lets solve the problem:

[tex]b*h =A\\6*9=54 sq inches\\A=\frac{1}{2} b*h\\A=\frac{1}{2} 6*2\\A=\frac{1}{2}(12)\\A=6 sq inches\\6+54=60 sq inches[/tex]

I would be happy to help you with any future questions you might have, and I hop this provided some clarification for you. :D

An item is regularly priced at $90 . It is now priced at a discount of 70% off the regular price. What is the price now?

Answers

the answer is 27 dollars

$27 yup the answer is

PLEASE HELP THIS IS DUE TODAY!!!
Ronald measured a chemical to be used in a science experiment. He recorded the mass as 12 mg. The accepted mass of the chemical was 11 mg. Approximately, what percent of the accepted mass was the difference of these measurements?

A.
4.35%

B.
0.09%

C.
8.33%

D.
9.09%

Answers

Answer:

D i think check and see if it was

Find the area of the figure.

Answers

Answer:

864 i think

Step-by-step explanation:

The shadow of the moon during a solar eclipse travels 2300 miles in 1 hour. In the first 20 minutes, the shadow traveled 766 2/3
miles. How long does it take for the shadow to travel 1150 miles?

Answers

Answer:

0.5 hours

Step-by-step explanation:

2300 miles per hour

1150/2300 = 0.5 hours

Answer:

2031

Step-by-step explanation:

20+766+2300=3181-1150=2031

ASAP helppppp Give me the correct ones

Answers

Answer:

it are 1 cup : 1/4, 2/3 cup:1cup,2 cup: 2/3 cup

Step-by-step explanation:

pls heellpp meeee its so hard

Answers

Download photo math and take a picture of the graph it will tell you domain and range it helped me when I was on this unit awhile ago

Please help with these 3 thank you, you will get brainleiest for the most detailed and/or answering the questions:)

Answers

2.) Given: There are 30 students. 24 are wearing sneakers.

Work: We can figure this out by finding the exact percentage of sneaker-wearers in the class.

To find the percentage, you do 24/30. 24/30 is equal to 80%.


Answer: Joe is wrong. The percentage of students wearing sneakers is 80% and not 70%.


3.) Given: There are 40 people total. 2 women per 3 men.

Work: 2:3 women to men

If we multiply both by 10, we will get 50 people in total.

20:30 = 50

So we need to shrivel this down to 40 by taking out 5 on both sides of the ratio.

50 - 5 - 5 = 15:25 = 40

But the ratio need to be divisible by 2 because of the 2 women that are needed per 3 men. We can do this by moving over one human to the men’s side.

There are 14 women and 26 men. I didn’t use any of the strategies there listed because I don’t even remember what those are. I’m in grade 9. I would say that the ratio table works best because I just used ratios...


4.) Given: Find simplified fraction of silicon. 100%.

Work: Add all things up to find out the denominator for the fraction. They will equal 100.

So the fraction is 28/100.

We can divide this fraction by 4.

7/25

This is the simplified form.


Answer: 7/25


Which phrase describes the algebraic expression 5 +w? Plz i need answer fast i will mark brainliest and follow you

A. the product of 5 and w

B.the quotient of 5 and w

C. w more than 5

D.5 less than w

Answers

Answer:

I say b

Step-by-step explanation:

have a good day

Given the equation g(t)=4^t , what is the average rate of change from 0≤t≤2?
The average rate of change is __

Answers

Answer:

g(0)=4^0 = 1

g(1) = 4^1 = 4

g(2) = 4^2 = 16

Average :

(1+4+16)/3

=(5+16)/3

=21/3

= 7

Take a sum, divide by 3 because the counted datas are 3.

If you have 6 bananas and 5 apples, how many lights are there? My teacher asked this, if you get it right, you get brainliest

Answers

Answer:

I don't know but I am going to say 11

Step-by-step explanation:

Answer:

The Horses name is Friday

Pls help ;-;
Part A

Below is a table showing the different sales prices of a bicycle that Juan wants to purchase. Juan wants to get the best deal. Which store offers the bike at the lowest price after the discount?

Show your work as you find the price of the bike at each store.


Part B

Which store offers the bike at the lowest price after the discount?


A. Z-Mart


B. ABC Sports


C. Bike World


D. Not enough information to tell

Answers

Z mart because u would do 100-the percent discounted and then find that percent of the price
zmart!!!!!!
answer!!!!!!!

The markup at Total Jewelry is 70%. If the wholesale price of a necklace is $130, what will the store charge as the retail price for the necklace?
A. $191
B. $200
C. $221
D. $910

Answers

Answer:

C

Step-by-step explanation:

170/100*130

17/10*130

17*13/1

=221

C

Answer:

c

Step-by-step explanation:

where will the lines 2x-3y=-1 and y=x-1 intersect
4,3
6,5
9,8
11,10

Answers

The answer is 3x-x+2=4

The answer is 3x-x+2=4

a composite shape is shown.
6 cm
4 cm
1 cm
2 cm
7 cm
to the nearest hundredth, what is the area of the shape? use 3.14 as an approximation for 1. enter the answer in the box.

Answers

Try multiplying 3.14 for all the numbers and add all of the products together.

What is the solution to 2x-8 <12?
x<2
x<3
x<10
x<40

Answers

Answer:

x<10

Step-by-step explanation:

2x-8<12

add 8 to 12 and cancel to get the equation, 2x<20

divide 20 by 2

x<10

Hope this helps :)

The answer would be X<10

A ballpark snack bar sold hot dogs and hamburgers. There were 9 times as many hot dogs sold as hamburgers during the third inning, for a total of 72 hot dogs sold. How many hamburgers were sold?

Answers

Answer:

:the answer is 8 (c)

Step-by-step explanation:dice there were 9x as many hot-d than hamburger you ÷ the amount of hotdogs by 9

PLEASE help 20 points & Mark brainlist

Answers

Answer:

1. x=2

2. n=1

3. y=2

4. b=25

5. c= 12

6.h = 15

7. a=14

Answer: 1.B 2.A 3.B 4.Y 5.L 6.O 7.N

Step-by-step explanation: HOPE IT HELPED 0_0

Plssssss Help!!!
If angle 2=130 degrees, what is angle 6?

Answers

Answer:

50

Step-by-step explanation:

180-130=50

Answer: 50

Step-by-step explanation:

a=130

6=180-130=50

Diego says that 108 cubes with an edge length of 1/3 inch are needed to fill a rectangle prism that is 3 inches by 1 inch by 1 1/3 inch

a. Explain how this is true

b. What is the volume in cubic inches of the rectangular prism? explain your reasoning.

Answers

Answer:

Step-by-step explanation:

Option C) 4 cubic inches is the volume of the rectangular prism. Step-by-step explanation: It is given that, 108 cubes with an edge length of 1/3 inch are needed to fill a rectangular prism. Therefore, the volume of the rectangular prism is equal to the volume of the 108 cubes needed to fill that rectangular prism.

B b b b b b b b b b b

please help me first answer gets brainliest

Answers

Step-by-step explanation:

Answer: -40

Step-by-step explanation:

Jen and Joey share a 30-ounce bucket of clay. By the end of the week, Jen has used 3/10 of the bucket, and Joey has used 3/5 of the bucket of clay. How many ounces are left in the bucket?

Answers

Answer:

Basically your doing GCF

-20(8x + 20) yea again like i stated before im not bright

Answers

Answer:

-160x - 400

Step-by-step explanation:

-20(8x + 20)

distribute -20 into the ( )

-160x -400

Hope This Helps!!!

Answer:

distributive property

-160x - 400

Step-by-step explanation:

-20 * 8x = -160x

-20 * 20 = -400

*btw this symbol (*) is a multiply*

I will also give brainliest on this one What’s the surface area of this round to the tenth if you have to

Answers

542.4
I believe is the answer

Help please. Due today

Answers

Answer:

$210/6 is a better deal and unit will be $/g

Step-by-step explanation:

Answer:

145/5 is better deal and unit rate of deal is $29/g

Write each phrase as an algebraic expression

“the quotient of p and 20 added to 4”

Answers

Thr answer is (9 ÷ 20) + 4.

Ashley and William work at the local ice cream shop. Ashley is paid $15
per week plus $9.75 per hour, and William is paid $12 per week plus $10.25 per
hour.
Write expressions that represent how much Ashley and William are paid
each week using h as the number of hours worked

Answers

Answer:

Ashley is 146.25 is the h in hours worked and for William 123.00 is the h in hours worked

Step-by-step explanation:

So first, you are gonna do 15 times 9.75 and that will equal 146.25 and for William your gonna do 12 times 10.25 and that will equal 123

Find the distance from Alanah's house to Mia's house. Round the answer to the nearest tenth. (Please explain how you get the answer I don't know how to do it) Will give Brainliest

Answers

Answer:

10

Step-by-step explanation:

This has to do with the Pythagorean thereon.

a^2 + b^2 = c^2.

With that set we need to find what a and b are.

a = 8 (one leg)

b = 6 (the other leg)

so

8^2 + 6^2 =

64 + 36 =

(the longest side is called the hypotenuse)

100= c^2

c=10

Hope this helped:)!

The distance from Alanah's house to Mia's house is 11 units.

What is the distance formula between two points?

The distance formula between two points forming a line segment (x₁, y₁) and (x₂, y₂) is,

[tex]D = \sqrt{(x_2 - x_1)^2 +(y_2 - y_1)^2}[/tex].

A coordinate system in geometry is a method for determining the positions of the points by using one or more numbers or coordinates.

A line segment is a subset of a line having two endpoints and these endpoints are represented by coordinate points.

From the graph, the location of Alanah is (2, 8), and the location of Mia

is (8, 16).

Therefore, The distance between their house is,

[tex]D = \sqrt{(8 - 2)^2 +(16 - 8)^2}[/tex].

[tex]D = \sqrt{36 +84}[/tex].

[tex]D = \sqrt{120}[/tex].

D = 2(√30) units.

learn more about the distance between two points here :

https://brainly.com/question/12040665

#SPJ2

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