How much net work is required to accelerate a 1000 kg from 20 m/s to 30
m/s?

Answers

Answer 1

Answer:

Work= force(F) * distance (s)

weight is a force and so

F=weight=mass *acceleration due to gravity

=1000*10=10000N

S=?

To find s,

F= ma

a=F/m=10000/10

a=10m/s²

Using Newton's third equation of motion

v²= u²+2as

30²= 20²+2*10*s

900–400=20s

500=20s

s=500/20= 25m

Work =F*s

Work=10000*25

Work= 250000J or 250KJ

Step-by-step explanation:


Related Questions

Fill in the table using this function rule.
y=-2x +4

Answers

Answer

i think this is what you mean

Step-by-step explanation:

x          y

2         0

1          2

0         4

-1         6

-2        8

⅔n = 10
pls help me again

Answers

21.4588336899833357889
About 21.5 sorry if it’s wrong

A new process of more accurately detecting anaerobic respiration in cells is being tested. The new process is important due to its high accuracy, its lack of extensive experimentation, and the fact that it could be used to identify five different categories of organisms: obligate anaerobes, facultative anaerobes, aerotolerant, microaerophilic, and n anaerobes instead of using a single test for each category. The process claims that it can identify obligate anaerobes with 97.8% accuracy, facultative anaerobes with 98.1% accuracy, aerotolerant with 95.9% accuracy, microaerophiles with 96.5% accuracy, and n anaerobes with 99.2% accuracy. If any category is not present, the process does not signal. Samples are prepared for the calibration of the process and 31% of them contain obligate anaerobes, 27% contain facultative anaerobes, 21% contain microaerophiles, 12% contain nanaerobes, and 9% contain aerotolerant. A test sample is selected randomly.

Required:
a. What is the probability that the process will signal?
b. If the test signals, what is the probability thatmicroaerophiles are present?

Answers

Answer:

a) 0.97605 = 97.605% probability that the process will signal.

b) 0.2076 = 20.76% probability that microaerophiles are present.

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

[tex]P(B|A) = \frac{P(A \cap B)}{P(A)}[/tex]

In which

P(B|A) is the probability of event B happening, given that A happened.

[tex]P(A \cap B)[/tex] is the probability of both A and B happening.

P(A) is the probability of A happening.

a. What is the probability that the process will signal?

It signals in these following moments:

97.8% of 31%(contains obligate anaerobes).

98.1% of 27%(contains facultative anaerobes).

96.5% of 21%(contains microaerophiles).

99.2% of 12%(contains nanaerobes).

95.9% of 9%(contains aerotolerant). So

[tex]p = 0.978*0.31 + 0.981*0.27 + 0.965*0.21 + 0.992*0.12 + 0.959*0.09 = 0.97605[/tex]

0.97605 = 97.605% probability that the process will signal.

b. If the test signals, what is the probability thatmicroaerophiles are present?

Event A: Test signals

Event B: Contains microaerophiles

0.97605 = 97.605% probability that the process will signal.

This means that [tex]P(A) = 0.97605[/tex]

Intersection of events A and B:

Signals containing microaerophiles, which is 96.5% of 21%. So

[tex]P(A \cap B) = 0.965*0.21 = 0.20265[/tex]

The probability that microaerophiles are present is:

[tex]P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.20265}{0.97605} = 0.2076[/tex]

0.2076 = 20.76% probability that microaerophiles are present.

[BRAINLIEST TO BEST ANSWER] Can anybody solve this before an hour? Solve is for solving it, and check is for checking the answer to see if it's correct.

Answers

Answer:

3x = 18

x=6

check: 3(6)=18. 18=18

x/3 = -4

X=-12

Check: 12/3=4. 4=4

11x=121

x=11

Check: 11(11)=121. 121=121

-8y=32

x=-4

Check: -8(-4)=32. 32=32

y/4=12

y=48

Check: 48/4=12. 12=12

6y=-48

y=-8

Check: 6(-8)=-48. -48=-48

y/7=-7

y=-1

Check: (-1)/7=-7. -7=-7

x/5=5

x=1

Check: (1)/5=5. 5=5

1) solve

3x=18

x=6

check

3(6)=18

2) solve

x/3=-4

x=-12

check

-12/3=-4

3) solve

11x=121

x=11

check

11(11)=121

4) solve

-8y=32

y=-4

check

-8(-4)=32

5) solve

y/4=12

y=48

check

48/4=12

6) solve

6y=-48

y=-8

check

6(-8)=-48

7) solve

y/7=-7

y=-49

check

-49/7=-7

8) solve

x/5=5

x=25

check

25/5=5

To reason about the value of x in 1/4(12x - 8) =10, Joy and Paulo each rewrite the equation. Joy rewrites the equation as 3x - 2 = 10. Paulo rewrites the equation as
12x - 8 = 40. What are their strategies? Explain your reasoning.

Answers

Answer:

For Joy:

Strategy: Multiply through by 4

For Paulo:

Strategy: Evaluate the bracket

Explanation:

Given

[tex]\frac{1}{4}(12x - 8)=10[/tex]

Required:

Determine the strategies

For Joy:

Strategy: Multiply through by 4

[tex]4 * \frac{1}{4}(12x - 8)=10 * 4[/tex]

[tex]12x - 8 = 40[/tex]

Done

For Paulo:

Strategy: Evaluate the bracket

[tex]\frac{1}{4}*12x - \frac{1}{4}*8=10[/tex]

[tex]3x - 2 = 10[/tex]

Done

What are the zeros of F(x)=(x-2)(x+7)

Answers

Answer:

Zero's are X = 2 and X = -7

Step-by-step explanation:

you would set the factorized parts equal to zero, as in x - 2 = 0 and x + 7 = 0, then solve for x, and whatever you get is where y will be zero

Answer:

zeros: x = 2 and x = -7

Step-by-step explanation:

use zero product property - set the polynomial equal to 0

(x-2)(x+7) = 0

then set each factor separately to 0:

x - 2 = 0                         x + 7 = 0

solve for x by adding 2 to both sides in the equation on the right, and subtracting 7 from both sides in the equation on the left

x = 2                               x = 7

Common ratio of 135,45, 15, 5,

Answers

9514 1404 393

Answer:

  1/3

Step-by-step explanation:

If the ratio is common, you can choose any successive numbers to compute it. Smaller numbers may be more familiar. The ratio is ...

  5/15 = 1/3

Tasha is packing gift bags that include

the same items. She has 72 glow sticks,

36 markers, and 24 bottles of bubbles.

Tasha believes that she can pack no

more than 6 bags using all of her

supplies. Do you agree with Tasha? Explain.

Answers

Answer:

No, I do not.

She can pack up to 12 bags

Step-by-step explanation:

Given

[tex]Glow\ sticks = 72[/tex]

[tex]Markers = 36[/tex]

[tex]Bubbles = 24[/tex]

Required

Is Tasha correct?

The maximum number of bags she can pack is determined by the greatest common factors (GCF) of the items.

i.e. GCF of 72, 36 and 24.

This is calculated as:

[tex]24 = 2*2*2*3[/tex]

[tex]36 = 2 * 2 *3*3[/tex]

[tex]72 = 2 * 2 * 2 *3*3[/tex]

Multiply all common factors:

[tex]GCF = 2 * 2 * 3[/tex]

[tex]GCF = 12[/tex]

The GCF is 12.

This implies that she can pack up to 12 bags

Jenna has a rectangular pig pen that measures 8m wide by 10m long. She wants to increase the area to 168 m^2 by increasing the length and width by the same amount. What would you enter into desmos to represent the equation?

A) x^2 + 18x – 88

B) x^2 + 10x + 80

C) (8x)(10x)-168

D) None of the above

Answers

Answer:

The answer is A

Step-by-step explanation:

I just took the test and it was the answer!

The equation for the increase in length and width of the rectangular pig pen is x² + 18x - 88 = 0.

The correct option is (A).

What is Surface Area?

The area is the area occupied by a two-dimensional flat surface. It has a square unit of measurement.

As per the given data:

The dimensions for the pig pen Jenna has is given.

The area of the pig pen is to be increased to 168 m² by increasing the length and width by the same amount.

Length of the rectangular pig pen = 10 m

Width of the rectangular pig pen = 8 m

Now, let's say that the length and width of the pig pen is increased by x m.

length = 10 + x

width = 8 + x

The expression for the area of the pig pen will be:

Area = length × width

168 = [10 + x][8 + x]

168 = 80 + 10x + 8x + x²

x² + 18x - 88 = 0

The equation for the increase in length and width of the rectangular pig pen is x² + 18x - 88 = 0.

Hence, The equation for the increase in length and width of the rectangular pig pen is x² + 18x - 88 = 0.

To learn more about surface area, click:

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What name is given to the price dealerships pay for vehicles?

Answers

Answer:

invoice price? retailers? dealers cost?

Step-by-step explanation:

i dont know if this is worded correctly for me to understand i-

Evaluate 11.5s + 10.7t when s = 7 and t = 8 .

Answers

Answer:

166.1

Step-by-step explanation:

It would become 11.5 * 7 + 10.7 * 8 = 80.5 + 85.6 = 166.1

which ordered pair would form a proportional relationship with the point graphed below?

Answers

Answer:

[tex](x,y) = (-30,10)[/tex]

Step-by-step explanation:

Given

[tex](x,y) = (60,-20)[/tex]

Required:

Determine a pair with a proportional relationship

A proportional relationship is:

[tex]k = \frac{y}{x}[/tex]

Where k is the constant of proportionality.

[tex](x,y) = (60,-20)[/tex]

So, we have:

[tex]k = \frac{-20}{60}[/tex]

[tex]k = -\frac{1}{3}[/tex]

This means that for a pair to have a proportional relation, k must be -1/3.

This is true for (c).

Where:

[tex](x,y) = (-30,10)[/tex]

So, we have:

[tex]k = \frac{10}{-30}[/tex]

[tex]k = -\frac{1}{3}[/tex]


I’m so bad at math Can someone help

Answers

Answer:

B and C

Step-by-step explanation:

It fits the inequality

Step-by-step explanation:

step 1. no one is categorically bad at math; they just haven't practiced.

step 2. this reads: x is less than 30 and x is greater than 15.

step 3. x cannot be 15 but can be 22 and 29.

Kenji feeds his cats a mixture of wet and dry food at every meal. He mixes 5 spoonfuls of dry food and 10 spoonfuls of wet food for Tiger, his adult cat. He mixes a smaller meal with 3 spoonfuls of dry food and 5 spoonfuls of wet food for his kitten, Smokey. Do the two meals have the same ratio of dry food to wet food?

Yes or No

Answers

The answer is no it is not the same ratio

18h 19min 26s
+ 25h 45min 48s

Answers

Answer:

2 days 5 minuts 14 seconds

Step-by-step explanation:

 1 1   1 1    1

 18   19   26

+25  45  48

1 24   05  14


select the equation of the line that passes through the point (3,-1) and is parallel to the line on the graph

Answers

The answer is y=-1.
Since it's a straight line, there shouldn't be a slope. The y has to pass through -1, so the answer would be y=-1.

Six copies of the sum of nine fifths and three ​

Answers

Answer: What is the complete question? Can you comment it?

Step-by-step explanation: I can’t help unless I know what the full question is. Sorry.

A rocket is fired into the air modeling the equation h = -16t2 + 512t + 50, where "t" is the time in seconds and "h" is the
3
height in feet

Answers

3 ft is the 1521 that’s the answer

Lorrie bought 3 1/2 yards of ribbon. She had 2 feet 6 inches of ribbon left after trimming a banner. How many inches of ribbon did Lorrie use for the banner?

Answers

Answer:

7 ft 11 inches

Step-by-step explanation:

Convert 3 1/2 yards into 10 ft 5 inches.

Subtract 2 ft 6 inches from 10 ft 5 inches.

Lorrie used 88 inches of ribbon for the banner.  

What are Arithmetic operations?

Arithmetic operations can also be specified by subtracting, dividing, and multiplying built-in functions.

The operator that performs the arithmetic operation is called the arithmetic operator.

We have been given that Lorrie bought 3 1/2 yards of ribbon. She had 2 feet 6 inches of ribbon left after trimming a banner.

We have to determine the number of inches of ribbon did Lorrie use for the banner.

Here the quantity of ribbon bought by Lorrie =  3 1/2  yard = 3.5 yard

The quantity of ribbon she has left.

⇒ 2 ft 6 inches

⇒ 2×12 + 6

∵ 1 feet = 12 inches

⇒ 30 inches    

Since we know that 1 yard = 36 inch

So 3.5 yard = 36×3.5 inches = 126 inches

The quantity of ribbon which is trimmed :

⇒ 126 - 30 = 88 inches

Therefore, Lorrie used 88 inches of ribbon for the banner.  

Learn more about Arithmetic operations here:

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correct 96897 to the nearest thousand

Answers

That would be rounded to 97000

Find x for the trapezoid.
J
K
(2x+15).. (3x-20).
(x +15).
N4
M.

Answers

Answer:

50°

Step-by-step explanation:

All quadrilaterals' interior angles sum to 360°:

(x + 15)° + (2x + 15)° + (3x - 20)° + x° = 360°

x + 15 + 2x + 15 + 3x - 20 + x = 360

7x + 10 = 360

7x = 360 - 10

7x = 350

x = 50°

Which value should be added to this data set to produce a mean of 13?
should be added to the data set to produce a mean of 13.

Answers

Is there an image you can add?

,Answer:

18

Step-by-step explanation:

edg 2021, i got this question correct, please mark me brainliest, I hope this helps, sorry for the late reply

Which points are separated by a distance of 5 units? O A. (1,3) (6,3) ☆ O B. (3,5) (1,5) O C. (5,1) (1,1) O D. (2,3) (3,3)​

Answers

Answer:

A

Step-by-step explanation:

A. (1,3) and (6,3) have the same y-coordinate, so the distance between them is the difference of the x-coordinates.

distance = 6-1  = 5

:::::

B. (3,5) and (1,5). Again, the same y-coordinate. Distance = 3-1 = 2 ≠ 5

:::::

C. distance = 5-1 = 4 ≠ 5

:::::

D. distance = 3-2 = 1 ≠ 5

The graph below represents a recent 10 meter race between two remote control cars.

A graph titled Remote Control Car Race has seconds after race start on the x-axis and distance from start line (meters) on the y-axis. A line labeled red car goes through (3, 2) and (6, 4). A line labeled blue car goes through (3, 0) and (5, 2).

Which statements about the race are true? Check all that apply.
The red car won the race because it started above the blue car.
The cars crashed at 9 seconds into the race because that is the point of intersection, and neither car continued on after that point in time.
The blue car passed the red car at 6 m into the race because that is the point of intersection, and the blue car has a greater distance than the red car after that time.
The blue car is faster because the slope of its line is steeper than the slope of the line representiong the red car.
The blue car started 3 seconds late because it has an x-intercept of (3, 0) and x represents the time and y represents the distance from the starting line.

Answers

Answer:

options c d e

Step-by-step explanation:

Answer:

C D E

Step-by-step explanation:

1 Yvonne is saving money for college, and currently has $1200 in a savings account. She plans to deposit $30 each week from her part-time job and then deposit birthday money from her Aunt Marlene ($40 each birthday). Her goal is to have saved $6,000 by the time she graduates from high school in three years. 1. Write a function that models Yvonne's savings. 2. Simplify your function. 3. Use your function to create a graph of Yvonne's savings.(input your function in your calculator and take a screenshot)​

Answers

Answer:

Step-by-step explanation:

Yvonne is saving money for college, and currently has $1200 in a savings account. She plans to deposit $30 each week from her part-time job and then deposit birthday money from her Aunt Marlene ($40 each birthday). Her goal is to have saved $6,000 by the time she graduates from high school in three years. 1. Write a function that models Yvonne's savings. 2. Simplify your function. 3. Use your function to create a graph of Yvonne's savings.(input your function in your calculator and take a screenshot)

Write an integer for deposit of $100

Answers

Write an integer for deposit of $100:

-$100

surface area of a sphere with radius 19

Answers

Answer:

A≈4536.46

Step-by-step explanation:

I hope this helps! ^^

☁️☁️☁️☁️☁️☁️☁️

Answer:

Radius 19

A ≈ 4536.46 .....ans

Write an expression equivalent to 9(8x + 5) + 7

Answers

Answer:

72x+52

Step-by-step explanation:

72x+45+7=72x+52

Shivani has two pieces of wire, one 48 feet long and the other 21 feet long. If she wants to cut them up to produce many pieces of wire that are all of the same length, with no wire left over, what is the greatest length, in feet, that she can make them?

Answers

Answer:

3 feet

Step-by-step explanation:

48 = 2⁴×3

21 = 3×7

Greatest common factor of 48 and 21 is 3.

Each piece will be 3 feet long.

You can make 8 pints of purple paint by mixing 6 parts of blue paint to 2 parts of red paint. The employees in the paint department of a home improvement store use this table to determine the amounts of blue and red paint needed to create this color for their customers.

How much red paint is needed to create 40 pints of purple paint for their customers?

Answers

Answer & Step-by-step explanation:

Since we use 5 parts blue and 3 parts red, the total sections is 8.

28/8 = 3.5

We want to find the red which is 3 parts.

3.5 * 3 = 10.5.

Your answer should be 10.5 pints of red.

Hope this helps!

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