The kinetic energy T units of a moting body (of constant mass) varies as the square of its speed vm/s. If T = 800 units when v= 20m/s: Calculate V when T= 1800.​

Answers

Answer 1

The kinetic energy T units of a motion body (of constant mass) varies as the square of its speed v m/s. If kinetic energy T = 800 units when speed v= 20m/s: Calculate V when T= 1800.​

If T=1800 then V=30m/s.

kinetic energy is nothing but The energy an object has as a result of motion is known as kinetic energy.

Given that,

If T = 800 units when v= 20m/s

Kinetic energy formula is

\(T=\frac{1}{2}mv^{2}\)

Here, T is kinetic energy , m is mass and v is speed

Now,

\(800=\frac{1}{2}m(20)^{2} \\800\times2=m(400)\\\frac{1600}{400}=m\\ m=4\)

We got mass m as 4

Now, when T= 1800 find v=?

\(1800=\frac{1}{2}\times4\times v^{2} \\1800\times2= v^{2} \\ v^{2} =900\\v=30\)

Therefore, we got speed v=30m/s when the kinetic energy T=1800.

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Related Questions

Can anyone please help me with this question?

Can anyone please help me with this question?

Answers

The cutoff point is 717 minutes.

How to solve

Arrange the data in ascending order.

307, 311, 321, 322, 354, 363, 377, 406, 410, 425, 435, 461, 464, 474, 499, 505, 513, 517, 534, 548

Thus, the value of i is 5.

Here, i is an integer, the 25th percentile is the mean of the data values at the 5th and 6th positions.

The data value in the 5th position is 354 and the data value in the 6th position is 363. Thus, the mean of these two values is,

=358.5

The 25th percentile is considered as the first quartile. Hence, the value of the first quartile (Q1 ) is 358.5 minutes.

Find the third quartile (Q3) or 75th percentile.

Consider p=75 and n=20 .

Thus, the value of i is 15.

Here, i is an integer, the 75th percentile is the mean of the data values in positions at the 15th and 16th

The data value in the 15th position is 499 and the data value in the 16th  position is 505. Thus, the mean of these two values is 502.

The 75th percentile is considered as the third quartile. Hence, the value of the third quartile (Q3 ) is 502 minutes.

The interquartile range (IQR) is 143.5

The upper fence is,

Upperfence=502+(1.5∗143.5)

=502+215.25

=717.25

717minutes

The cutoff point is 717 minutes.

The phone company decides to use the upper fence as the cutoff point for the number of minutes at which the customer should be contacted. Thus, the cutoff point is 717 minutes.

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help me please thank you

help me please thank you

Answers

i cant see your photo

Step-by-step explanation:

ok this is sort of simple. 3.5*2=7 which is the area of the rectangle. you know that the b side of the triangles is equal to 1, so we can do 3.5*1=3.5/2 1.75*2 7+3.5=

10.5ft sq.

First, determine if the three side lengths could form a triangle. (Recall from earlier, the sum of the two smaller sides must be greater than the third side). If yes, classify the triangle further as acute, right, or obtuse.17 ,1712 , Not a triangle
acute
right
obtuse

Answers

The triangle of given dimensions is isosceles and acute triangle.

Triangle is a shape with three sides and hence three angles. We know that triangles are classified according to the sides and angles. Based on angles, the classification of triangle is acute, obtuse and right triangle.

Based on sides, the classification of triangle is equilateral, isosceles and scalene triangle. Now, if the dimensions will form a triangle or not can be estimated through the formula -

side 1 + side 2> side 3

We see that 17 + 17 > 12

34 > 12

Thus, the triangle will form.

Moreover the two sides are equal hence it will be isosceles triangle. Since two sides are equal thus two angles will also be equal.

Now, if we square the sides and find their sum, it will be greater than square of third side. Hence, it is acute triangle.

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The Logan family is renting a beach house from Aqua Coast Beach Rentals. Mr. Logan called the rental agency ahead of time to get the total cost for 9 days. The rental agent explained that since the family plans to stay during the off-season, there will be a one-time discount of $25 applied to their rental cost. The Logans will pay $920 in all.
Which equation can you use to find d, how much the agency charges per day?

Answers

You can use the equation 9d-25=920.

In need of help pls. Try and answer asap.

In need of help pls. Try and answer asap.

Answers

Answer:

Step-by-step explanation:

∠1 and 85 are supplementary

m∠1 = 180 - 85 = 95°

Given: AB=BC AC < bisector of

Given: AB=BC AC &lt; bisector of

Answers

Considering the given figure we have that

< BAC = < CAD         definition of angle bisection

< BAC = < BCA         base angles of isosceles triangle

What is angle bisection?

This refers to when angles are being shared or divided into two equal parts.

In the given problem, line AC is the bisector of < BAC. creating wo equal angles in the process. hence

< BAC = < CAD         definition of angle bisection

Triangle BAC is an isosceles triangle, since the sides BA and BC are equal. the angles are also equal therefore

< BAC = < BCA         base angles of isosceles triangle

Line AC is also a transversal line, connecting the two parallel lines BC and AD. This creates opportunity for alternate angle theorem

< BCA = < CAD        alternate internal angle theorem

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Talwar wants to invest R5800 at simple interest rate of 12,2% per annum. How many years will it take for the money to grow to R26100​

Answers

It will take approximately 28.67 years for Talwar's investment of R5,800 to grow to R26,100 at a simple interest rate of 12.2% per annum.

To calculate the number of years it will take for Talwar's investment to grow to R26,100 at a simple interest rate of 12.2% per annum, we can use the formula for simple interest:

Simple Interest = Principal × Rate × Time

Given that the principal (P) is R5,800, the rate (R) is 12.2% (or 0.122 as a decimal), and the desired amount (A) is R26,100, we need to find the time (T) it will take. Rearranging the formula, we get:

Time = (Amount - Principal) / (Principal × Rate)

Plugging in the values, we have:

Time = (R26,100 - R5,800) / (R5,800 × 0.122)

= R20,300 / R708.6

≈ 28.67 years

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24,783 is invested, part at 15% and the rest 9%. If the interest earned from the amount invested at 15% exceeds the interest earned from the amount invested at 9% by $894.09, how much is invested at each rate?

Answers

If 24,783 is invested, part at 15% and the rest 9%. If the interest earned from the amount invested at 15% exceeds the interest earned from the amount invested at 9% by $894.09: 51,960 is invested at 15%, and 22,823 is invested at 9%.

How to find the amount invested?

Let's x represent the amount invested at 15%

Let the  amount invested at 9% = 24,783 - x.

Interest earned at 15% is 0.15 * x

Interest earned at 9% is 0.09 * (24,783 - x)

We can set up the equation: 0.15x = 0.09 * 24,783 - 0.09x + 894.09

Solving for x:

0.06x = 24,783 * 0.09 + 894.09

0.06x = 2223.47 + 894.09

0.06x = 3117.56

x = 51,960

So,

(24,783 - x)

24,783 - 51,960

= 22,823

Therefore 51,960 is invested at 15%, and 22,823 is invested at 9%.

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What is the equation of a circle with center (1,-4) and radius 2?

Answers

Step-by-step explanation:

Centre of circle(h,k)=(1,-4)

radius of the circle(r)=2

Equation of the circle is,

(x-h)^2+(y-k)^2=r^2

(x-1)^2+(y+4)^2=2^2

x^2-2x+1+y^2+8y+16=4

x^2+y^2-2x+8y+13=0 is the req.equation of the circle.

Give brainliest

Draw u – v + w. (4 points)

Answers

The graph of U + V + W vectors is attached accordingly.

What is a vector in math?

A vector is a number or phenomena with two distinct properties: magnitude and direction. The word can also refer to a quantity's mathematical or geometrical representation.

From the question,

U = (1,5), iV = (-3, 1) and W = (4, -3)

Thus, U + V + W = (1-3+4, 5+1-3)

= (2, 3)

Hence, the attached graph.

Note that In nature, vectors include velocity, momentum, force, electromagnetic fields, and weight.

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Draw u v + w. (4 points)
Draw u v + w. (4 points)

Find w=a+bi=, where a and b are real numbers
√-8+6i

Answers

Given statement solution is :- The given expression √(-8 + 6i) does not have a real solution in the form w = a + bi, where a and b are real numbers.

To find the complex number in the form w = a + bi, where a and b are real numbers, we can solve the given expression.

Let's solve √(-8 + 6i) step by step:

First, we can express -8 + 6i in the form a + bi:

-8 + 6i = -8 + 6i + 0i = -8 + 6i + \(0i^2\)

Now, we can take the square root of -8 + 6i:

√(-8 + 6i) = √((-8) + 6i + \(0i^2\))

Since \(i^2\) = -1, we can simplify the expression further:

√(-8 + 6i) = √(-8 - 6 + 6i)

= √(-14 + 6i)

Now, we want to express -14 + 6i in the form a + bi:

-14 + 6i = -14 + 6i + 0i = -14 + 6i +\(0i^2\)

Taking the square root, we have:

√(-14 + 6i) = √((-14) + 6i + \(0i^2\))

Since \(i^2\) = -1, we can simplify the expression further:

√(-14 + 6i) = √(-14 - 6 + 6i)

= √(-20 + 6i)

Now, we want to express -20 + 6i in the form a + bi:

-20 + 6i = -20 + 6i + 0i = -20 + 6i + \(0i^2\)

Taking the square root, we have:

√(-20 + 6i) = √((-20) + 6i + \(0i^2\))

Since \(i^2\) = -1, we can simplify the expression further:

√(-20 + 6i) = √(-20 - 6 + 6i)

= √(-26 + 6i)

Now, we want to express -26 + 6i in the form a + bi:

-26 + 6i = -26 + 6i + 0i = -26 + 6i +\(0i^2\)

Taking the square root, we have:

√(-26 + 6i) = √((-26) + 6i + \(0i^2\))

Since \(i^2\) = -1, we can simplify the expression further:

√(-26 + 6i) = √(-26 - 6 + 6i)

= √(-32 + 6i)

We continue this process until we reach a point where the expression simplifies. However, in this case, we encounter an expression that cannot be simplified further, as the square root of a negative number is not defined in the set of real numbers.

Therefore, the given expression √(-8 + 6i) does not have a real solution in the form w = a + bi, where a and b are real numbers.

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How many four digit numbers can be formed from the digits 1,3,5,7,8 and 9 where a digit is used at most once?
A.if the numbers must be even?
B.if the numbers are less thsn 3000?
i need detail explanation ​

Answers

Answer:

A. To form an even number, the last digit must be either 8 or 5, since they are the only even digits in the set. Since a digit can be used at most once, there are two choices for the last digit.

For the first digit, there are four choices (1, 3, 5, or 7), since we cannot use 0 or the last digit.

For the second digit, there are four choices remaining (since one digit has been used), and for the third digit, there are three choices left.

Therefore, the total number of four-digit even numbers that can be formed is: 2 x 4 x 4 x 3 = 96.

B. To form a number less than 3000, the first digit must be 1, 3, or 5. There are three choices for the first digit.

For the second digit, there are four choices remaining (since one digit has been used), and for the third digit, there are three choices left.

For the fourth digit, there are two choices remaining (since we cannot use the first digit).

Therefore, the total number of four-digit numbers less than 3000 that can be formed is: 3 x 4 x 3 x 2 = 72.

PLEASE HELP ME I NEED THE ANSWER FAST.

PLEASE HELP ME I NEED THE ANSWER FAST.

Answers

Answer:

126

Step-by-step explanation:

9 by 10 is 90

9 by 4 is 36

90+36= 126

Hope this helps <3

#9.
The table represents some points on the graph of linear function f.
Which function represents f ?
f(x)=32(3 x-1)
f(x)=-32(x-3)
f(x)=-2(32 x-3)
f(x)=16(2 x-1)

#9.The table represents some points on the graph of linear function f.Which function represents f ?f(x)=32(3

Answers

The option a is giving the same value according the table. So the option a is correct answer.

In the given question, the table represents some points on the graph of linear function f.

We have to find which function represents f.

(a) f(x)= 32(3x-1)

(b) f(x)= -32(x-3)

(c) f(x)= -2(32x-3)

(d) f(x)= 16(2x-1)

We find the pattern we firstly observe the given table closely.

So from the given table;

f(-2) = -224, f(1) = 64, f(5) = 448, f(10) = 928

To check which option is giving the value of f(x) right according to table, we put the value in each option.

Firstly taking the option a.

f(x)= 32(3x-1)

Now checking the option 1.

Putting x=-2, if the value of f(-2) = -224, then the option is correct.

f(-2)= 32(3(-2)-1)

f(-2)= 32(-6-1)

f(-2)= 32*(-7)

f(-2)= -224 (True)

Now putting x=1 in the same option to cross check, if the value of f(1) = 64, then the option is correct.

f(1)= 32(3(1)-1)

f(1)= 32(3-1)

f(1)= 32(2)

f(1)= 64

Now the option a is giving the same value according the table. So the option a is correct answer.

We find the right answer so we don't check the further option. To check next option you can use the same way.

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please help!!


I can’t put the answer options because brainly won’t allow me to choose multiple photos at once, but there are solid line graphs, dotted line graphs, and they are all shaded.

please help!!I cant put the answer options because brainly wont allow me to choose multiple photos at

Answers

The answer would be a solid line graph which is increasing.

5. You buy a boat for $35,000 that * 10 points
depreciates in value at about 17%
per year. How much will it be worth
in 3 years?
Your answer

Answers

Answer:

9000

Step-by-step explanation:

find x
a.204
b.90
c.78
d.102

find x a.204b.90c.78 d.102

Answers

Answer:

Hope you can understand my handwriting though

find x a.204b.90c.78 d.102

What is the difference of (Three-fourths x minus two-thirds) minus (Negative StartFraction 5 over 6 EndFraction + 2 x)? Negative StartFraction 5 over 4 EndFraction x + StartFraction 1 over 6 EndFraction Negative StartFraction 5 over 4 EndFraction x minus StartFraction 1 over 6 EndFraction StartFraction 11 over 4 EndFraction x + StartFraction 1 over 6 EndFraction StartFraction 11 over 4 EndFraction x minus StartFraction 1 over 6 EndFraction

Answers

Answer:

-5/4x + 1/6

Step-by-step explanation:

Got it correct on edge

Answer:

a

Step-by-step explanation:

PLZZZ HELP!!!!!!!!!1
What is the median and Q1 of the data set represented on the plot?

Median = 30; Q1 = 20
Median = 33; Q1 = 20
Median = 30; Q1 = 25
Median = 33; Q1 = 25

PLZZZ HELP!!!!!!!!!1What is the median and Q1 of the data set represented on the plot? Median = 30; Q1

Answers

Answer:

i cant put the picture

Step-by-step explanation:

d. Median=33;Q1=25 the median is represented by the line in between the two boxes. Q1 is represented by the line on the far left of the box in the picture Q1 is marked for quadrent 1 and m is for median

Which expression can be used to find 75% of 60?
75% of 60
25%
25%
25%
0.25
15
0.25
15
* 0.25
15
25%
0.25
15
0 (0.25)(60)
0 (0.25)(15)
O (3)(15)
O (360)

Which expression can be used to find 75% of 60?75% of 6025%25%25%0.25150.2515* 0.251525%0.25150 (0.25)(60)0

Answers

Answer:

(3)(15)

Step-by-step explanation:

75% of 60=60 x 0.75

      =(3)(15)

Answer:C

Step-by-step explanation:

C

A gallon of gas last summer was $2.28. This week, a gallon costs $3.48.
What is the percent change?

Answers

Answer:

52.63%

Step-by-step explanation:

The gasoline increased by $1.20. This means it grew by about 52.63% (Double-check to make sure I am correct)

2x - 7 + 3x = 4x + 2 need help with this one

Answers

Answer:

x = 9

Step-by-step explanation:

To solve the equation 2x - 7 + 3x = 4x + 2 for x, you can follow these steps:

Combine like terms on both sides of the equation. Add the x terms together and move the constant terms to one side of the equation:

2x + 3x - 4x = 2 + 7

Simplifying the left side: x = 9

Simplify the right side of the equation:

x = 9

Therefore, the solution to the equation is x = 9.

you want to combine the like terms, move the variable to the left side, and then collect like terms and you get x=9

write the phrase as an expression.

5 less than 8

Ab expression is :​

Answers

8 - 5 that’s the answer jfosjfksjdjsjdjs

Maricko and he family went on a 10-day vacation. She read 12 pages in her book each day. How many total pages did she read while on vacation?

Answers

Maricki read 120 pages while on vacation

Evaluate
Explain

A.5/6×10/11=
B. 9÷1/4=
D. 9/4 -2/3=
E. 1/5÷3=
Please explain your answers

EvaluateExplain A.5/610/11=B. 91/4=D. 9/4 -2/3=E. 1/53=Please explain your answers

Answers

Step-by-step explanation:

Multiplication of fractions is easiest operation. Simply multiple numerator to numerator and denominator to denominator. For example,

\(\frac{x}{y} * \frac{a}{b }= \frac{x*a}{y*b}\)

Addition and subtraction requires that we find a common demoninator.

For example,

\(\frac{6}{4} + \frac{4}{3}\)

The common denominator is 12. So I need to muliply each fraction to get the right denominator. 4*3 = 12.

\(\frac{6}{4}*\frac{3}{3} + \frac{4}{3} \frac{4}{4} = \frac{18}{12}+\frac{16}{12}\)

Then we add the numerators

\(\frac{18+16}{12} = \frac{32}{12}\)

Then we should reduce.

\(\frac{16}{6} = \frac{8}{3}\)

Division is a little trickier because we have to flip-flop the second term and then multiply. For example: \(\frac{1}{10} \div \frac{5}{6} \rightarrow \frac{1}{10} * \frac{6}{5} = \frac{6}{50}\)

QUESTION 6 1 POINT
Using the table, what is the average daily balance of the credit card for the August 1 through August 31 billing period?
Round your answer to the nearest dollar.
Provide your answer below:
Day
1
8
16
24
Activity
Payment
Purchase
Purchase
Adjustment Closing Balance
-550
4
+200
+150
850
300
500
650

Answers

Rounded to the nearest dollar, the average daily balance of the credit card for the August 1 through August 31 billing period is $74.

To find the average daily balance of the credit card for the August 1 through August 31 billing period, we need to calculate the sum of the daily balances and divide it by the number of days in the billing period.

Let's calculate the daily balances for each day:

Day 1: Closing Balance = $850

Day 8: Closing Balance = $300

Day 16: Closing Balance = $500

Day 24: Closing Balance = $650

To calculate the daily balances, we need to consider the activities that occurred on each day.

On Day 1, there was no activity recorded, so the closing balance remains at $850.

On Day 8, a payment of $550 was made. Therefore, the closing balance is $850 - $550 = $300.

On Day 16, a purchase of $200 was made. Therefore, the closing balance is $300 + $200 = $500.

On Day 24, a purchase of $150 was made and an adjustment of $4 was applied. Therefore, the closing balance is $500 + $150 - $4 = $650.

Now, let's calculate the average daily balance:

Sum of daily balances = $850 + $300 + $500 + $650 = $2300

Number of days in the billing period = 31

Average daily balance = Sum of daily balances / Number of days = $2300 / 31 ≈ $74.19

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Math
Level 1 L.13 Percent error: word problems 6UY
Language arts
Submit
yards
Recommendations
◄) Turner plays running back on his middle school football team. He likes to predict how
many yards he will run the ball in each game. In last night's game, Turner ran for 50 yards.
He had predicted he'd run for 40% less than that. How many yards had Turner predicted he
would run for?
Skill plans
Video

Answers

Turner had predicted he would run for 30 yards in the game.

Define percentage

In terms of a number out of 100, a % is a means to express a proportion or a fraction. It is represented by the symbol "%". For example, if 25 out of 100 students in a class are girls, we can say that the percentage of girls in the class is 25%.

To find out how many yards Turner predicted he would run for, we can use the following steps:

Convert the percentage reduction to a decimal: 40% = 0.4Subtract the reduction from 1 to find the percentage of the original amount: 1 - 0.4 = 0.6Multiply the percentage by the actual amount to find the predicted amount: 0.6 x 50 = 30

Therefore, Turner had predicted he would run for 30 yards in the game.

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Hal and Pat, a married couple filing jointly, had the mortgage debt on their principal residence cancelled in 2021. What is the maximum amount of qualified principal residence debt cancellation that they can exclude from their income?

Answers

Answer:

Hal and Pat, a married couple filing jointly, had the mortgage debt on their principal residence cancelled in 2021. What is the maximum amount of qualified principal residence debt cancellation that they can exclude from their income?

In a certain board game, a 12-sided number cube showing numbers 1–12 is rolled. If three such number cubes are rolled, what is the probability that at least 1 of them shows a 2?

0.0006
0.2297
0.7703
0.9994

Answers

Answer:

0.7703

Step-by-step explanation:

The easiest way to calculate this is to find the probability that none of the cubes show a 2. The probability that a cube doesn't show a 2 is 11/12.

\(\frac{11}{12} * \frac{11}{12} * \frac{11}{12} =\) 0.7703. Now we have to subtract this value from one which gives us 0.2297. Hope this helps

Answer:

The correct answer is 0.2297 (B)

Step-by-step explanation:

I just finished the Unit test review on Edge-The other person is wrong!!!

The angle of depression from the window of a building to a parked car is 38°. If the car is parked 320 feet away from the base of the building, what is the distance between the window and the car to the nearest tenth?

Answers

Answer:

Set your calculator to degree mode.

Please sketch the figure to confirm my answer.

cos(38°) = 320/d

d•cos(38°) = 320

d = 320/cos(38°) = 406.1 feet

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