Jonathan wants to investigate the effect that friction has on the amount of force needed to pull an object over surfaces with different textures.
For his test, he gathers the following materials:
• A 1-kilogram wooden board
• A1-meter length of string
A spring scale
• 1 sheet each of felt, construction paper, coarse sandpaper, and wax paper
• 1 roll of masking tape
Jonathan ties one end of the string around the board and the other end to the hook of the spring scale. He tapes the felt, construction paper,
sandpaper, and wax paper side by side on a tabletop. Then he slowly pulls the board across each of the four different surfaces, one surface at
a time. He records the amount of force it takes to move the board over each surface. Which surface would require the least force to move the
board?
O A. Coarse sandpaper
O B. Construction paper
OC. Felt
O D. Wax paper

Answers

Answer 1

Answer:

sand paer

Step-by-step explanation:

dd,,dd,

ddmdmdmdmmddmmdddmdmmdmdmd


Related Questions

(10 POINTS) Rectangle ABCD is dilated with center at (0, 0) and scale factor 2. Select the three statements that are true about the dilation.

Answers

Answer:

The answer is B1 is locates at (6,4)

Rectangle ABCD and rectangle A1B1C1D1 are congruent

The equation for the line containing B1 and C1 is y=2/3xx

Step-by-step explanation:

Someone answered the thing in another question.. don't worry trust me

I need to know ASAP! Thanks ^^

Answers

Answer:

PQ=30

Step-by-step explanation:

Knowing that the segment has 3 parts that are 3:1:1 and sum up to 50, you could find how much 1 would equal by finding the total in relation to the ratio (doing 3+1+1) which gets you 5 parts. Then you can divide the total (50) by 5 to figure out how much one part would equal (10). Now, since you know that 1 part is equal to 10 and that PQ is 3 parts, you can find that PQ is equal to 3x10, or 30.

There are 30 students Ms. Washington’s class. Sixteen of the students are in band. What percent of Ms. Washington’s class is in band?

Answers

Answer: 53.33

Step-by-step explanation:

20 points!

If in a model the variables are inversely proportional, it is said that there is a negative correlation.

A) Tue

B) False

Answers

The answer is A true don’t ask how
i think it’s false not sure

I will mark you brainlist

Answers

6 would equal 360 and 7 would equal 420

Please help!!! Brainliest?

Answers

I think the answer is b i hope this helps

Which group of ordered pairs are on the line given by the equation 5x−2y=6?

Answers

Answer:

(0, -3), (2, 2), (4,7) these are just some points

Step-by-step explanation:

Put the equation in y=mx+b format. It will be 2y=5x-6.

y=5/2x -3

the first point will be (0, -3) because of the y-intercept which is negative 3. You can graph the slope from that point to get (2, 2) and (4, 7). You can get more points too

Answer:

There are infinite ordered pairs are on the line because it has infinite solutions.

Step-by-step explanation:

5x - 2y = 6

-5x        -5x

-2y = -5x + 6

-2y/2 = -5x/-2 + 6/-2

y = 5/2x - 3

5x - 2(5/2x - 3) = 6

5x - 5x + 6 = 6

6 = 6

It takes Austin 8 hours longer than Elliott to construct a wooden chair in shop class. When the classmates work together, they can complete one chair in 3 hours. This situation can be represented by this expression, where t is the amount of time, in hours, it takes Elliott to complete a chair on his own.

Answers

The equivalent expression obtained using the least common multiple concept is [tex] \frac{6t + 24}{t^{2} +8}[/tex]

To solve, we need to obtain the L. C. M of the denominator values :

The L. C. M of t and t + 8 = [tex] t^{2} + 8t[/tex]

Hence,

[tex]\frac{3}{t} + \frac{3}{t+8} = \frac{6t + 24}{t^{2} +8}[/tex]

Therefore, the equivalent expression which represents the situation described above ls ;[tex] \frac{6t + 24}{t^{2} + 8t}[/tex]

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Answer:

D

Step-by-step explanation:

HELP PLEASE ITS DUE TODAY

Answers

Answer:

6/10, 9/15, 12/20, 15/25, 18/30, etc so Edgar is wrong. 3/5 is not equivalent to 18/32

Step-by-step explanation:

(Gimme Brainliest Please)

explain why 3(5x) does not equal to (3 times 5)(3times x)

Answers

Answer:

Because 3(5x) is the same as 3 *5 * x

Step-by-step explanation:

When a number is next to another in parantheses, it signifies multiplication. In this case, we already have 5 and x grouped together by a multiplication sign, so the entire thing is 5 * x. The statement below is key

Distribution in multiplication is only possible if a variable is grouped to another real number by a plus or minus sign.

So in this case, we have 3 * 5 * x, which is 15x. However, if we had 3(5 + x), we would have 15 (3 * 5) + 3x (3 * x).

Hopefully that makes sense!

For each 90 mm of coloured fabric Paul uses to make his curtains, he also uses 10 cm of white fabric. Express the amount of white fabric to coloured fabric as a ratio in its simplest form.

Answers

10:90
Simplified
1:9
Hope this helps you

Evaluate the following expression if x=12, y=6, and z=-4

Answers

Answer:

wheres the expression

Step-by-step explanation:

9) What is the x-coordinate of point A in a triangle with vertexes in A (3, 5), B(6, – 3) and C (-2, - 2) after
undergoing a translation of 5 units to the right and 2 units down?

Answers

A                                                because that's the only one  that makes sence

A car travels 54.9 miles in an hour. If the car continues at the same speed for 12 hours, how many miles will it travel? Round to the nearest whole mile. *

Answers

Answer:

658.8 so 659

Step-by-step explanation:

Algebra 1 KK.12 Scatter plots: line of best fit Y2S
What is the equation of the trend line in the scatter plot?
10
9
8
7
6
5
.
4
3
2
1
.
.
.
09
1
2
3
4 5
6 7
8 9
10
Use the two yellow points to write the equation in slope-intercept form. Write any coefficients
as integers, proper fractions, or improper fractions in simplest form.

Answers

Answer:y= - 2x + 16

Step-by-step explanation:

Give a possible factorization of the following polynomial
EXPLAIN the behavior at each zero and
how that is represented in your function.

Answers

Answer:-4

Step-by-step explanation: that is the highest point it reaches on the y axis

2. Sarah has some blue marbles, twice as many red marbles as blue, and 8 yellow marbles. If she has a total of 32 marbles, how
many red marbles does she have?
A.8
B.12
C.16
D.24

Answers

Given:

Number of  blue marbles, twice as many red marbles as blue, and 8 yellow marbles.

She has a total of 32 marbles.

To find:

The number of red marbles.

Solution:

Let number of blue marbles be x.

Then, number of red marbles = 2x

Number of yellow marbles = 8

Total number of marbles = 32

[tex]x+2x+8=32[/tex]

[tex]3x=32-8[/tex]

[tex]3x=24[/tex]

[tex]x=8[/tex]

Now,

Number of red marbles [tex]=2(8)=16[/tex]

Therefore, there are 16 red marbles.

1.Two cyclists are 7 miles apart when they begin biking away from each other in opposite directions. The speed of the first cyclist is 12 miles per hour. The speed of the second cyclist is b miles per hour greater than the speed of the first cyclist.

How many miles does the first cyclist bike in 45 minutes?

Answers

Answer:

9 miles

Step-by-step explanation:

If 1 hour is 12 miles, then 30 mins is 6 miles, then 15 minutes is 3 miles.

30+15=45

6+3=9

The first cyclist bikes 9 miles in 45 minutes.

Since two cyclists are 7 miles apart when they begin biking away from each other in opposite directions, and the speed of the first cyclist is 12 miles per hour, to determine how many miles does the first cyclist bike in 45 minutes the following calculation must be done:

60 = 12 45 = X 45 x 12/60 = X 540/60 = X 9 = X

Therefore, the first cyclist bikes 9 miles in 45 minutes.

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can someone pls help me out

Answers

Answer:

1. y=1/5x-1 2/5

2. y=-1/2x+1/2

Step-by-step explanation:

Help pleaseeee, Im on a time limittt

Answers

Answer:

Step-by-step explanation:  value X

what are the three legal moves when using algebra tiles

Answers

Answer:

There are three types of “legal moves” in which you can preform on your expression math that help you simply an algebraic expression.

Flipping. Flipping a tile to move it out of one region into the opposite region (i.e., finding its opposite). ...

Zero Pairs.

Step-by-step explanation:

thats your answer :)

credit: Google

For the following quadratic equation, find the discriminant.
x^2+ 10x + 44 = 0

Answers

Answer:

padlet        com     /vpena20241    

/sv1blyklvnvfbcdw

Step-by-step explanation:

what is the equation shown on this graph?​

Answers

Answer:

y=1

Step-by-step explanation:

there is no slope therefore dont place it. however there is a Y intercept.

What is the value of x in the equation One-third x minus two-thirds = negative 18? –56 –52 52 56 Need answer ASAP!!!! Being Timed

Answers

Answer:

Step-by-step explanation:

fhv

Help please it is due in 10 min
will give brinly

Answers

Answer:

b

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

A doesn't have a a slope of 3/5

C and D don't past through (2,4)

A star-patterned quilt has a star with the angles shown. What is the value of x? The diagram is not to scale.

Answers

Answer:

x = 81

Step-by-step explanation:

x + 24 = 105

Subtract 24 from both sides

x = 81

Simple.

The value of x is 81.

what is exterior angle property?

If a side of a triangle is produced, then the exterior angle so formed is equal to the sum of the two interior opposite angles.

Given:

<1 = x

<2 = 24

exterior angle = 105

Now, using exterior angle property

105 = x +24

x= 105 - 24

x= 81

Hence, the value of x is 81

Learn more about exterior angle property here:

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Evaluate 5x-2w+t

Help needed!!

Answers

the answer is the same

The value of x is (2w - t)/5.

The value of w is (5x + t)/2.

The value of t is  2w - 5x.

What is an expression?

An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.

Example: 2 + 3x + 4y = 7 is an expression.

We have,

5x - 2w + t = 0

Solve for x.

5x - 2w + t = 0

5x = 2w - t

x = (2w - t)/5

Solve for w.

5x - 2w + t = 0

5x + t = 2w

w = (5x + t)/2

Solve for t.

5x - 2w + t = 0

t = 2w - 5x

Thus,

The value of x, w, and t is given above.

Learn more about expressions here:

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#SPJ2

Jack and Jill are going up the hill to pull weeds. Jack can pull all of the weeds by himself in 8 hours; if Jill helps him they can pull the same amount of weeds in 5 hours. How long would it take Jill to pull the weeds working alone?

Answers

Answer:

it would take jill 12 hours

Answer:

13.3 hours

Step-by-step explanation:

5/8 +5/b = 1

8b(5/8+5/b=1)

5b+40=8b

40=3b

40/3=b

40/3=13.3 hours

Plzzzzz cannn someone he’lppppp meeeeee

Answers

Yes it is a function, it passes the straight line test

MATH HELP PLEASE DUE SOON!

Answers

Answer:

a

Step-by-step explanation:

Answer:

d

Step-by-step explanation:

because all the x is different

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