Object moving in the xy-plane is acted on by a conservative force described by the potential-energy function u(x,y)=α(1/x2+1/y2), where α is a positive constant

Answers

Answer 1

It seems like the problem is asking for us to derive an expression for the force F⃗ stated in terms of the unit vectors i^ and j^.

The solution for this is:


U(x,y) = α (x^-2 + y^-2) 


F = - dU(x,y) 


F = - (dU/dx + dU/dy) 


F = - (-2αx^-3 - 2αy^-3) 


F = 2α (x^-3 + y^-3)


F = 2α (1/x^3 i + 1/y^3 j) 

Answer 2
Final answer:

A conservative force is related to the potential-energy function. In this particular context, the force exerted on an object in an xy-plane is calculated using the negative gradient of the potential energy function u(x,y) given.

Explanation:

The question presents a potential-energy function for an object moving in the xy-plane, with the function u(x,y)=α(1/x2+1/y2) where α is a positive constant. This case refers to the action of a conservative force.

A conservative force is characterized by the fact that the work done by the force is only dependent on the start and end points of the motion. In turn, this gives the freedom to define a potential energy for any conservative force. In the context of this potential-energy function, the conservative force acting on the object can be calculated from the negative gradient of the potential energy.

To express it quantitatively, given a potential energy function U(x), the force F acting on the object at a position x is given by F=-dU/dx. If we extend this to two dimensions in the xy-plane, the force F = - ∇U, where ∇ is the gradient operator.

Applying these concepts to your given potential energy function u(x,y)=α(1/x2+1/y2), the force acting on the object in the x and y directions can be calculated by differentiating this function with respect to x and y respectively, applying the opposite sign.

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Related Questions

What is the largest flag jake can draw

Answers

Final answer:

In the painting 'Three Flags' by Jasper Johns, the size of the largest flag would depend on the canvas or surface used.

Explanation:

In the painting Three Flags by Jasper Johns, he used his encaustic process to create the artwork. Each flag reduced about twenty-five percent in scale as he stacked canvas flags, with the largest one receding into the background. The congealed wax drippings gave the painting a dimensional sculptural appearance.

The stripes and stars on the flags also grow smaller, adding to the illusion of three separate elements. Therefore, in terms of the largest flag Jake can draw, it would depend on the size of the canvas or surface that he is working with.

"a dealer in a casino has rolled a 6 on a single die four times in a row. what is the probability of his rolling another 6 on the next roll, assuming it is a fair die?"

Answers

one out of six or 1/6

What is the value of x in diagram

Answers

Answer is below........

Michael Ross earned $44 on Monday, $36 on Tuesday, $58 on Wednesday, took Thursday off, and earned $51 on Friday. His total earnings for the week

Answers

189$, thats his total earnings
$187. All you had to do was add everything together

At Shaw's Market apples cost $10 per case and bananas cost $6 per case. If an order comes in for a total of 300 cases for $2,000, what was the specific number of cases of apples?

Answers

a + b = 300....b = 300 - a
10a + 6b = 2000

10a + 6(300 - a) = 2000
10a + 1800 - 6a = 2000
10a - 6a = 2000 - 1800
4a = 200
a = 200/4
a = 50 <=== 50 cases of apples

b = 300 - a
b = 300 - 50
b = 250....250 cases of bananas
250 cases is the answer

Five sixths of Forty two

Answers

Hello,

Five sixths of forty two is = 35.

Rafael wants to buy a car he needs it down payment of $3000 if he saves $340 each month about how many months will it take him to save the down payment

Answers

Divide 3000 by 340. It will take him a little less than 9 months to save the down payment.

It will take Rafael 10 months to save the down payment.

Rafael needs down payment of $3000 If he saves $340 each month, to determine how many months it will take him to save the down payment: Further Explanation

Method:

To solve this question, round out one of the factors to estimate the product

We have:

340 ≈ 300 (we rounded 340 to the nearest hundred)

Let x represent the number of months, then we have:

300 x X = 3000

3 x 100 x X = 3 x 100 times 10 (for better understanding)

X = [tex]\frac{3000}{300}[/tex]

X = 10

so, it will take him about 10 months to save the down payment.

Notably, we rounded 340 to 300 so that it can be easier to use when calculating.

Some examples of numbers rounded to the nearest hundreds 7671 ≈ 7700 534 ≈ 500 2221 ≈ 2200 195 ≈ 200 8671 ≈ 8700 424 ≈ 400 348 ≈ 300

LEARN MORE:

Raphael wants to buy a new car He needs a down payment of 3000 if he saves 340 each month about how many months will it take him to save the down payment  https://brainly.com/question/11540707Raphael wants to buy a new car https://brainly.com/question/2442284

KEYWORDS:

$3000$340 each monthrafaeldown paymentcarestimate the productrounded to the nearest hundred

Add. Write your answer as a mixed number in simplest form.
2 3/4+ 1 9/10=

Answers

[tex]2 \frac{3}{4} + 1 \frac{9}{10} __________ Convert so denominators are alike. _______ [/tex]

[tex] 2\frac{3}{4} = 2 \frac{30}{40} =====\ \textgreater \ 1 \frac{9}{10} = 1\frac{36}{40} Add[/tex]

[tex]2 \frac{30}{40} + 1 \frac{36}{40} = 3 \frac{66}{40} = 4 \frac{22}{40} = 4 \frac{11}{20} [/tex]

[tex]Answer: 4 \frac{11}{20} ________ You're welcome. [/tex]

Larry received 1/3 pound of candy from his grandmother and 2/5 pound of candy from his best friend. Larry's sister ate 1/2 pound of candy. How many pounds of candy does Larry have?

Answers

(1/3 + 2/5) - 1/2
10/30 + 12/30 - 15/30 =
22/30 - 15/30 =
7/30 lbs (or 0.233 lbs) <==

Answer:

Larry received 1/3 pound of candy from his grandmother and 2/5 pound of candy from his best friend. Larry's sister ate 1/2 pound of candy. How many pounds of candy does Larry have?

the answer is 7/30

Step-by-step explanation:

What is the simplified form of the expression 3 + 8x − 2y − x + 1 + 4y?

Answers

4+7x+2y
that is your answer
You want to combine like terms so that means each term has to have the same variable and exponent. There are no exponents so now we look at the variable. So, +8x and -x have the same variable so add them together. 8x+ -x which is the same as subtracting since -x is negative.

8x-x= 7x      7x is positive

You still have 3 and - 2y +4y and +1. Now combine -2y and +4y

-2y + 4y = 2y

you still have 2 like terms, 3 and 1.

3+ 1 is 4

so its 4+2y+7x

Six sandwiches are being divided evenly among 4 friends.



How many sandwiches will each friend receive?



A. 2




B. 3/2




C. 2/3




D. 3/4


Answers

Hello! Six sandwiches are being split between 4 friends. To find out how much each friend gets, all we have to do is divide the number of sandwiches by friends. 6/4 is 1.5 or 3/2 in improper fraction form. Each friend will get 3/2 of a sandwich. The answer is B: 3/2.
it should be 1 and a half each

What is the difference between the mean and the median of the data set? {22, 8, 10 ,18 ,12, 20} 0 2 4 6

Answers

Answer:  The correct option is (A) 0.

Step-by-step explanation:  We are given to find the difference between the mean and median of the following data set:

{22, 8, 10 ,18 ,12, 20}.

MEAN:  It is the sum of all the values together divided by the number of values in the set.

So, the MEAN of the given data set is

[tex]m=\dfrac{22+8+10+18+12+20}{6}\\\\\\\Rightarrow m=\dfrac{90}{6}\\\\\Rightarrow m=15.[/tex]

MEDIAN: The median of a data set is given by the middle-most value in the data.

If there is an even number of items in the data set, then the median is found by taking the mean of the two middlemost numbers.

Arranging the given data in ascending order, we have

8, 10, 12, 18, 20, 22.

Since there are 6 values, that is even number of values. so the MEDIAN is given by

[tex]M=\dfrac{12+18}{2}\\\\\Rightarrow M=\dfrac{30}{2}\\\\\Rightarrow M=15.[/tex]

Therefore, m = M.

That is, mean and median of the given data are equal.

Hence, the difference is

m - M = 15 - 15 = 0.

Thus, option (A) is CORRECT.

Answer:

Option A - 0

Step-by-step explanation:

Given : Data set {22, 8, 10 ,18 ,12, 20}

To find : What is the difference between the mean and the median of the data set?

Solution :

Data set in increasing order {8, 10 ,12,18, 20,22}

Mean is defined as the division of sum of set values by total number of values.

[tex]M=\frac{\sum x}{n}[/tex]

Substitute the values we get,

[tex]M=\frac{8+10+12+18+20+22}{6}[/tex]

[tex]M=\frac{90}{6}[/tex]

[tex]M=15[/tex]

So, The mean of the set is 15.

Median of even numbers is the average of two middle terms.

[tex]m=\frac{3rd+4th}{2}[/tex]

[tex]m=\frac{12+18}{2}[/tex]

[tex]m=\frac{30}{2}[/tex]

[tex]m=15[/tex]

So, The median of the set is 15.

Now, The difference of the mean and the median of the set is

[tex]d=M-m[/tex]

[tex]d=15-15[/tex]

[tex]d=0[/tex]

Therefore,Option A is correct.

The difference of the mean and the median of the set is 0.

1.5x+0.5y=12
solve for y

Answers

Y=-3x+24

Hope this helps :)

a function is defined by f(x)=x/4, what is f(-8)

Answers

f(x) = x/4
so
f(-8) = -8/4 = -2
answer
f(-8) = -2

Answer: -2

Step-by-step explanation:

Help please!! A bacteria culture is started with 300 bacteria. After 4 hours, the population had grown to 500 bacteria. If the population grows exponentially. a: write a recursive formula for the number of bacteria. b: write an explicit formula for the number of bacteria. c: if this trend continues, how many bacteria will there be in 1 day?

Answers

Answer:

a).[tex]P_{t}=\frac{5}{3}P_{t-1}[/tex]

b).[tex]A_{t}=300e^{0.1277\times t}[/tex]

c). 6429 bacteria

Step-by-step explanation:

Population of the bacteria grows exponentially.

Therefore, growth of the bacteria will be represented by the formula

[tex]P_{t}=P_{0}e^{kt}[/tex]

Where [tex]P_{t}[/tex] = Population of the bacteria after time t

[tex]P_{0}[/tex] = Initial population of the bacteria

k = growth constant

t = time taken for growth

Now we plug in the values in the formula

[tex]P_{t}[/tex] = 500

[tex]P_{0}[/tex] = 300

Time t = 4 hours

[tex]500=300e^{4k}[/tex]

[tex]e^{4k}=\frac{500}{300}[/tex]

Now we take the natural log (ln) on both the sides

[tex]ln(e^{4k})=ln(\frac{500}{300})[/tex]

4k(lne) = ln(500) - ln(300)

4k = 6.2146 - 5.7038

4k = 0.5108

k = [tex]k=\frac{0.5108}{4}=0.1277[/tex]

a). Recursive formula for the sequence formed by the bacterial growth

Since [tex]P_{t}=(1+r)P_{t-1}[/tex]

500 = (1 + r)300

[tex](1+r)=\frac{5}{3}[/tex]

r = [tex]\frac{5}{3}-1=\frac{2}{3}[/tex]

Therefore, the recursive formula will be

[tex]P_{t}=\frac{5}{3}P_{t-1}[/tex]

b). Explicit formula for the number of the bacteria will be

[tex]A_{t}=300e^{0.1277\times t}[/tex]

c). We have to calculate the number of bacteria after 24 hours

[tex]A_{t}=300e^{0.1277\times 24}[/tex]

[tex]A_{t}=300e^{3.0648}[/tex]

[tex]A_{t}=300\times 21.43[/tex]

[tex]A_{t}=6429[/tex] bacteria

3,10,24,52 what is the pattern

Answers

multiply 2 and then add 4 each time

3 x 2 = 6 + 4 = 10
10 x 2 = 20 + 4 = 24
24 x 2 = 48 + 4 = 52

hope this helps

The time required to cook a pizza at a neighborhood pizza joint is normally distributed with a mean of 12 minutes and a standard deviation of 2 minutes. find the time for each event. (round your answers to 2 decimal places.)
a. highest 5 percent min.
b. lowest 50 percent min.
c. middle 95 percent min. to min.
d. lowest 80 percent min.

Answers

Final answer:

a. The highest 5 percent time is approximately 15.29 minutes. b. The lowest 50 percent time is 12 minutes. c. The middle 95 percent interval is approximately 8.08 minutes to 15.92 minutes. d. The lowest 80 percent time is approximately 10.32 minutes.

Explanation:

a. To find the highest 5 percent, we need to find the value that separates the highest 5 percent from the rest. This value is called the upper 5th percentile. Using the z-score formula, z = (x - mean) / standard deviation, we can find the z-score associated with the upper 5th percentile. By looking up this z-score in the z-table, we can find the corresponding value. In this case, the z-score is approximately 1.645. Using the formula, x = z * standard deviation + mean, we can calculate the time needed for the highest 5 percent: x = 1.645 * 2 + 12 = 15.29 minutes.

b. To find the lowest 50 percent, we need to find the value that separates the lowest 50 percent from the rest. This value is called the median. The median of a normally distributed data set is equal to the mean. Hence, the lowest 50 percent time is the mean of 12 minutes.

c. To find the time for the middle 95 percent interval, we need to find the values that separate the middle 95 percent from the rest. These values are called the lower 2.5th percentile and the upper 2.5th percentile. Using the z-score formula, we can find the z-scores associated with the lower and upper 2.5th percentiles. By looking up these z-scores in the z-table, we can find the corresponding values. In this case, the z-scores are approximately -1.960 and 1.960. Using the formula, x = z * standard deviation + mean, we can calculate the times: lower 2.5th percentile = -1.960 * 2 + 12 = 8.08 minutes, and upper 2.5th percentile = 1.960 * 2 + 12 = 15.92 minutes.

d. To find the lowest 80 percent, we need to find the value that separates the lowest 80 percent from the rest. This value is called the lower 20th percentile. Using the z-score formula, we can find the z-score associated with the lower 20th percentile. By looking up this z-score in the z-table, we can find the corresponding value. In this case, the z-score is approximately -0.841. Using the formula, x = z * standard deviation + mean, we can calculate the time needed for the lowest 80 percent: x = -0.841 * 2 + 12 = 10.32 minutes.

what is the slope intercept of 2y=14-4x

Answers

7, 14 would be it but you have to divide the whole equation by 2 to get the y alone
y=-2x+7 would be the correct answer

At a​ school, 174 students play at least one sport. This is 75​% of the students at the school. How many students are at the​ school?

Answers

Divide by 3:
174/3=58
Multiply by 4:
58·4=232.
There are 232 students at the school :)

Ricardo is treating his employees and makes the following purchases at the store: 2 packages of bagels at $3.49 each 2 containers of cream cheese at $2.89 each 3 dozen doughnuts at $5.39 each 4 bottles of juice at $3.49 each Ricardo has a business account which saves him 5% on all purchases at this store. The discount is applied before tax. He is charged sales tax of 7%. If Ricardo paid $45.89, then he _____ for his purchase. a. did not pay enough b. paid the correct amount c. paid $2.29 too much d. paid $5.14 too much

Answers

Ricardo has a business account which saves him 5% on all purchases at this store. the discount is applied before tax. he is charged sales tax of 7%. if Ricardo paid $45.89, then he paid $2.29 too much for his purchase. THE ANSWER WOULD BE C. $2.29 too much

Answer:

Ricardo paid $2.29 too much

Step-by-step explanation:

Great question, it is always good to ask away and get rid of any doubts that you may be having.

To begin answering this question we need to calculate the total before applying anything. We calculate this by adding up all the amounts of each item purchased. Like so,

[tex](2*3.49)+(2*2.89)+(3*5.39)+(4*3.49) = Total[/tex]

[tex]6.98+5.78+16.17+13.96 = Total[/tex]

[tex] 42.89= Total[/tex]

Now that we have the total we can apply the 5% discount to this total.

[tex]42.89 * (1-0.05) = 40.75[/tex] ... rounded up

Finally we can apply the 7% sales tax to this purchase to calculate the final price that Ricardo should have paid.

[tex]40.75*(1+0.07) = 43.58[/tex] ... rounded up

As we can see Ricardo paid $2.29 too much

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

0.27 repeating in simplest form

Answers

.27 repeating is 3/11

The standard notation for a repeating decimal is to put a bar over the repeating digits, that is, 0.27272727...=0.27 repeating


0.27 (repeating) = 27/99 which reduces to 3/11 <==

** if u have 1 number repeating, like 0.222, then u put that 1 number over 9...2/9

if u have 2 numbers repeating, like 0.1414, then u put those 2 numbers over 99....14/99

if u have 3 numbers repeating, like 0.234234, then u put those 3 numbers over 999.....234/999

Evaluate −f(a)

f(x)=−5x²+2x−1

Answers

[tex]\bf f(x)=-5x^2+2x-1\implies f(a)=-5(a)^2+2(a)-1 \\\\\\ f(a)=-5a^2+2a-1 \\\\\\ -f(a)\implies -~[-5a^2+2a-1]\implies 5a^2-2a+1[/tex]

A new born baby has about 26,000,000,000 cells. An adult has about 4.94 × 10^13 cells. How many times as many cells does an adult have than a newborn? Write your answer in scientific notation

Answers

4.94*10^13 / 2.6*10^10=1.9 * 10^3=1900 times

To determine a 72 percent level of confidence for a proportion, the value of z is approximately:

Answers

To solve this problem, we have to make use of the standard probability distribution tables for z test.

Since we are asked to find for the 72 percent level confidence, then this means we are to look for the value of z which gives (100-72)/2 = 14% on both sides of the tail.

So at 14% tail on one side, the z value is approximately:

1.08

 

Answer:

± 1.08

Mr. Khans is buying staplers for his office. Each stapler costs $16.99. Write a function to represent the situation.

Answers

16.99•x=
X stands for per stapler you buy and you times that but 16.99 and you get your answer

Answer:

[tex]C(x)=16.99x[/tex]

Step-by-step explanation:

Let x be the number of staplers and C(x) be total cost in dollars of x stapler.

Cost of each stapler = $16.99

So, the formula for total cost is

Total cost = Cost of each units × Number of units

Substitute 16.99 for Cost of each units and x for number of units in the above formula.

Total cost = [tex]16.99\times x[/tex]

Total cost = [tex]16.99x[/tex]

C(x) be total cost in dollars of x stapler. So, the cost function is

[tex]C(x)=16.99x[/tex]

Therefore, the function C(x)=16.99x represents the given situation.

The Waverly bush company issued 4,000 shares of common stock worth $2000,000.00 total. What is the par value of each share

Answers

I'm pretty sure it's $500 bc 2,000,000.00 divided by 4,000 is 500.

The difference between two numbers is 30. The
ratio of the bigger number to the smaller number is
7:2. What is the smaller number?

Answers

The smaller number of the two numbers that have a difference of 30 and a ratio of 7:2 is 12.

How to find the smaller number?

The difference between the two numbers is 30.

The ratio of the bigger number to the smaller number is 7:2.

The smaller number can be calculated as follows;

let

x = bigger number

y = smaller number

Hence, the difference in the numbers is as follows:

x - y = 30

Also, the ratio of the bigger number to the smaller number is 7:2.

The bigger number can be found using the ratio. Recall x + y is the total sum of the numbers.  

x = 7 / 9(x + y)

x = 7 / 9x + 7 / 9y

x - 7 / 9x = 7 / 9 y

2 / 9 x  = 7 / 9 y

multiply both sides by 9

2x  = 7y

The bigger number is 7 / 2 of the smaller number.

x = 7 / 2 y

Therefore, let's substitute the value of x in equation(i).

Recall x - y = 30

7 / 2 y - y = 30

5 / 2 y = 30

cross multiply

5y = 60

y = 60 / 5

y = 12

Hence,

x = 30 + 12

x = 42

Therefore,

smaller number = 12

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Find 1206 ×5 using expanded form. --------×5=

Answers

1000+200+00+6=1206 is how it looks in expanded form.

To calculate 1206 × 5 using expanded form, break 1206 into its place values, multiply each by 5, and then add the results. This gives 6030.

Finding 1206 × 5 Using Expanded Form

To find the product of 1206 and 5 using expanded form, we break down 1206 into its place values:

100020006

Now, we multiply each component by 5:

1000 × 5 = 5000200 × 5 = 10000 × 5 = 06 × 5 = 30

Finally, we add all these products together:

5000 + 1000 + 0 + 30 = 6030

Therefore, 1206 × 5 equals 6030.

Marcus works for 8 hours a day for 2 days at the bank and earned $165.12 how much did he earn per hour

Answers

$10.32 an hour.

165.12/16

16= hours worked

$165.12= pay for those 16 hours worked

Answer is $10.32 per hour
165.12/2= 82.56
82.56/8=10.32
I believe Marcus earns $10.32 Per hour

is 30 x 10 to the 4th power equal 3,000,000

Answers

It is not because 30×10^4 is 300,000.
The answer would then be...
30×10^5
Hope this helps!
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