I
A 10 kg box is pulled across the floor at a constant speed. If the force of pull was 70 N at
a 30° angle:
a. What was the force of friction
b. What was the coefficient of friction

Answers

Answer 1

Answer:

Acceleration equals zero because of constant velocity

[tex]f - fr = ma \\ 70 \cos(30) - fr = 0 \\ 70 \cos(30) = fr \\ fr \: = 60.62[/tex]

coefficient

Fr = coefficient × r

60.62= ce ×100

0.60 = coefficient


Related Questions

Write an algebraic expression for each verbal description:

The number of people who do NOT have brown hair
b= number of people WITH brown hair

Answers

90% of people marry there 7th grade love. since u have read this, u will be told good news tonight. if u don't pass this on nine comments your worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of your life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love you

What is the constant of proportionality in the equation 3y = 2x

Answers

Answer:k = 2/3

Step-by-step explanation:

When a variable y directly relates to another variable x, we can say:

y=kx

Given the equation, we can say

3y=2x

y= 2x/3

Putting the value of y from above discussion

kx = 2x/3

x is being cancelled on both sides of equation

k= 2/3

Answer:

k = 2/3

Step-by-step explanation:

i don’t know how to explain sorry I’m not good at explaining but I hope this helps

Excuse me but can someone help me with this I have to do it before tomorrow

Answers

Answer:

8)  Onaje is correct

9a) answers could be:  3(6y) or 4y + 6y + 8y  or 2(2y + 3y + 4y)

 b) all answers simplify to be 18y

Step-by-step explanation:

Paula is not correct because 16t + 9t ≠ 16 + 9 + 2t

16t + 9t only equals 25t

Answer:

8. Onaje's expression is correct.

Step-by-step explanation:

The price, t, of the medium T-shirts can be represented as 16t, or 16 × t.

The price, t, of the large T-shirts can be represented as 9t, or 9 × t.

16t + 9t = (16 + 9) × t = 25t

Answer:

9. Part a: The expression could be 9y - 3y + 12y.

9. Part b: 9y - 3y = 6y

               6y + 12y = 18y

A science experiment involves periodically measuring the number of mild cells present on a piece of bread at the start to the experiment

Answers

Answer:

A

Step-by-step explanation:

tiook

C is clicked but I'm not sure if that is the answer I just clicked one. I need the answer to both.

Answers

Answer:

I believe that B is the correct answer!

Step-by-step explanation:

The (x+5) can cancel

Then in the numerator (x^2-25) can be factored into (x-5)(x+5) through difference of squares.

Then in the denominator the (x-5)^2 can be stretched out to (x-5)(x-5)

Lastly the (x-5) on the top and bottom will cancel resulting in result B

I hope this helped!

Answer:

B(lol the one you chose randomly was right)

5, sorry I dunno the second number...

Step-by-step explanation:

(x+5)(x+5)(x-5)/ (x+5)^2(x-5)^2

(x+5)^2 gets canceled out

(x-5)/(x-5)^2

1/x-5

find the value of sin 0 in each of the following figures.​

Answers

Answer:

[tex]\displaystyle \sin\theta=\frac{4}{5}[/tex]

Step-by-step explanation:

Trigonometric Ratios

The ratios of the sides of a right triangle are called trigonometric ratios.

The longest side of a right triangle is called the hypotenuse and the other two sides are the legs.

Selecting any of the acute angles as a reference, we identify an adjacent leg and an opposite leg. The trigonometric ratios are defined upon those sides.

Sine Ratio

[tex]\displaystyle \sin\theta=\frac{\text{opposite leg}}{\text{hypotenuse}}[/tex]

Let's focus on the angle θ. Its opposite leg is 8 cm and the hypotenuse is 10 cm, thus:

[tex]\displaystyle \sin\theta=\frac{8}{10}[/tex]

Simplifying:

[tex]\boxed{\displaystyle \sin\theta=\frac{4}{5}}[/tex]


What is the slope of the line?

Answers

Do rise over run and you should end up with 4 and 3 hope that help

Simplify the following:
A) 4^9 x 4^3

B) 6^5x 6^2

C) 8^6 divide by 8

d) 7^8 divide by 7^6

Answers

Answer:

A. 4^12

B.6^7

C.8^7

D.7^2

A) 4^12 (because when u multiply two same numbers with different power, powers are added to each other and number is staying the same— a^b•a^c=a^b+c)

B) 6^7

C) 8^5 (because a^b:a^c=a^b-c, and since 8 is the same as 8^1, 8^6:8=8^5)

D) 7^2

Nick has a bag of marbles. Without looking in the bag, he
selects a marble, records its color, and puts it back in the
bag. All marbles are equally likely to be chosen. He
performs 100 trials.
Number of times a white marble was chosen
48
Number of times a red marble was chosen
13
Number of times a green marble was chosen 27
Number of times a blue marble was chosen
Based on the data Nick collected, what is the estimated probability, in
simplest form, of choosing a white marble from the bag? please help me ​

Answers

Answer:

Step-by-step explanation:

Ok wait. Try add

Answer:

12/25

Step-by-step explanation:

find the value of X round to the nearest tenth

Answers

Given:

In a right angle triangle triangle, the length of hypotenuse = 47 units.

One of the acute angle = 17°.

Opposite side of the given angle = X

To find:

The value of X. Round to the nearest tenth.

Solution:

In a right angle triangle,

[tex]\sin \theta=\dfrac{Opposite}{Hypotenuse}[/tex]

A right triangle is crated with the help of dotted lines. In this triangle,

[tex]\sin (17^\circ)=\dfrac{X}{47}[/tex]

[tex]0.2923717=\dfrac{X}{47}[/tex]

Multiply both sides by 47.

[tex]0.2923717\times 47=X[/tex]

[tex]13.74147=X[/tex]

[tex]X\approx 13.7[/tex]

Therefore, the approximate value of X is 13.7 units.

Given ABCD what is the value of y? ​

Answers

Answer:

x=7

y=5

Step-by-step explanation:

quadrilaterals have 360 degrees, and their opposite angles are equal

15x+5=16x-2

7=x

(plug back in to find angle)

15(7)+5=110

that angle, plus opposite angle, equals 110.

360-220=140

140/2=70

now we know the value of other unsolved angle

70=12y+10

60=12y

5=y

if a tables f(x) is being divided by 3, what is the common ratio

Answers

1/3 is the correct answer

Which statements are true?

Select each correct answer.


Since −6 is 6 units to the left of 0, |−6|=6 .

The absolute value of −6 is negative.

The absolute value of −6 is less than the absolute value of 6.

​ −6 ​ is closer to zero on the number line than ​ −7 ​ , so |−6|<|−7| .

Answers

Answer:

The first one and the last one are true (Since −6 is 6 units to the left of 0, |−6|=6 and −6 is closer to zero on the number line than −7, so |−6|<|−7|.)

Step-by-step explanation:

Absolute value is the distance to zero, and it is always positive. That means the positive and negative versions of a number have the same absolute value. That means the first one is true, and the second and third ones are false. For the last one, -6 is closer to zero, so that means it would be true (The absolute value of -6 is 6, and the absolute value of -7 is 7).

4 - y over 5 = 2 - 2y over 8
I’m just really tired lol (and lazy)

Answers

Answer:

40 if i did the equation right and ignore this wiehdnsjw

Answer:

egg egg egg egg egg

Step-by-step explanation:

1+1=1972-1=egg

plzzzzzzzzzzzzzzzzzzzzzzz

Answers

Answer:

18x to the power of 2 -15x+2

Step-by-step explanation:

The means of a proportion are 4 and 17. List all possible pairs of positive integers that could be the extremes of the proportion.

Answers

Step-by-step explanation:

Equating two statements is called proportion. By property of the proportion, the cross product of the mean is equal to cross product of the extreme. Also we can denote as ratio of extreme and mean.

A×B=B×C


[tex]y - 2x = 7[/tex]
how do i solve this?​

Answers

what is the question looking for? X or y?

BRAINLEST ANSWER!!

Find the coordinates of midpoint E.

(Enter answer in simplified form.)

Answers

Answer: -2a,-2b

Step-by-step explanation:

Plz help its really urgent!!

Answers

Answer:

3)0.4 and 1.8

Step-by-step explanation:

:):):):):):):);):):)

Catherine buys 2.12 pounds of tomatoes, 1.45pounds of chicken and 3.19 20 points
pounds of onions from a supermarket. Find the total weight of the
groceries she bought.

Answers

Answer:

The answer is 6.762 pounds.

Step-by-step explanation:

2.12 + 1.45 + 3.19 20 = 6.762.

A truck driver has a route that takes him 125 miles each way each day that he works. If he makes 15 roundtrips on this route per month, how many miles does he drive the truck per month?

Answers

Answer: 3,750 miles

Step-by-step explanation:

Route takes him 125 miles each way so in a day he travels:

= 125 + 125

= 250 miles

He made 15 roundtrips so total miles is:

= 15 * 250

= 3,750 miles

If purchased before the game, tickets to a high school baseball game cost $1.00. If purchased at the gate, the tickets cost $1.50. For a particular game, 500 tickets were sold and the total receipts were $587.50. How many tickets were purchased before the game and how many tickets were purchased at the gate?

Answers

Answer:

10

Step-by-step explanation:

Answer:

235

Step-by-step explanation:

A hospital employs a total of 77 nurses and doctors. The ration if nurses to doctors is 9:2. How many nurses are employed at the hospital? How many doctors are employed at the hospital?

Answers

Answer: 63 nurses and 14 doctors

so you know the ratio is 9:2. that means for every 9 nurses there are 2 doctors. i didn't make an equation but i counted it.

if theres 9 (9*1) nurses theres 2 (2*1) doctors

if theres 18 (9*2) nurses theres 4 (2*2) doctors

if theres 27 (9*3) nurses theres 6 (2*3) doctors

you get the point so i multiplied 7 to 9 and 7 to 2, which means:

if theres 63 (9*7) nurses theres 14 (2*7) doctors

i hope this helps :)

If Jared wanted to buy a t-shirt, how much would it cost him if he also had to pay a seven percent sales tax?

Answers

Answer:

it depends how much the shirt is too.

i will mark brainlist if right!!!

Answers

Step-by-step explanation:

b2 =5

.....................

2.5×10^3 times what number is equal to 5×10^6?

Answers

Answer:

2.5x10^3= 2,500

5x10^6= 5,000,000

Step-by-step explanation:

Here is a great trick that I always keep in mind whenever you are squaring 10 you add that many zeros for example.

10^4= 10000 (there are 4 zeros).

Please help me if you can​

Answers

Answer:

7. [tex]r^{19}[/tex]

Step-by-step explanation:

r^11 x r^8 =

r^11 + 8=

2^19

R^19 is the answer to your question

PLEASE HELP ME I'M BEHIND ON MY MATH AND I CAN'T FIND ANY ANSWERS!!! :(


Two banks offer to loan you money for a big purchase. How would you use your knowledge of simple interest to determine which loan to choose for this purchase?


(20 points)

(Written Response)

( E d g e n u i t y 2021)

(Mathematics 7 A)

(Journal Activity JAN 05.)


** Please answer to this if you did it already did this assignment already..! I'm behind on my math and I can't find any thing to help me out! **

Answers

Answer:

you would see which bank has a good business and have loyal customers and which one is giving you a better offer

Step-by-step explanation:

HOPE THIS HELPED!

Answer:

e.

Step-by-step explanation:

6(x-4y) does anyone know this answer

Answers

Answer:

4

Step-by-step explanation:

Can I get some help plz thank u sm

Answers

Answer:

x = 72

hope it helps

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