A local am radio station broadcasts at a frequency of 764 khz. calculate the energy of the frequency at which it is broadcasting. energy = kj/photon

Answers

Answer 1
The frequency of the emitted radio waves is:
[tex]f=764 kHz = 7.64 \cdot 10^5 Hz[/tex]

The energy of a photon is given by:
[tex]E=hf[/tex]
where h is the Planck constant and f is the photon frequency. Using the frequency given by the problem, we can find the energy of each photon of this radiation:
[tex]E=hf=(6.6 \cdot 10^{-34} Js)(7.64 \cdot 10^5 Hz)=5.04 \cdot 10^{-28} J=5.04 \cdot 10^{-31} kJ[/tex]

Related Questions

Q # 18,Graph the inequality on a coordinate plane, - y < 3 x - 5

Answers

For this case we have the following inequality:
 - y <3 x - 5
 Rewriting we have:
 y > -3x + 5
 The solution is given in this case by the set of points that belong to the shaded region shown in the graph.
 Answer:
 
see attached image.

Using known taylor series, find the first four nonzero terms of the taylor series about 0 for the function. sqrt((1 + t))sin(t)

Answers


[tex]x + \frac{ {x}^{2} }{2} - \frac{ 7{x}^{3} }{24} - \frac{ {x}^{4} }{48} [/tex]

Answer:

T series

Step-by-step explanation:

Hey can you please help me posted picture of question

Answers

The graph of x² is flipped over x-axis and is narrowed down by a factor of 3.

So, now the  expression graph will be - 3x²

Next, it is shifted to left by 4 units.

So, now the expression will be - 3(x - 4)²

Finally the graph is shifted up by 4 units, 

So, now the graph will be: - 3(x - 4)² + 4

Thus, the answer is option D

PLEASE HURRY!! I WILL GIVE BRAINLIEST

Trapezoid K' is the image of trapezoid K after a series of transformations.
Bella and Marco described the sequence of transformations in different ways.Which sequence or sequences are correct and why?

Answers

Answer:

Option A

Step-by-step explanation:

From the graph attached, we will write the transformation as followed.

a. Trapezoid k is dilated by a scale factor of [tex]\frac{3}{2}[/tex]

   [ Since scale factor = [tex]\frac{\text{Largest side of k'}}{\text{Largest side of k}}[/tex]

                                   =  [tex]\frac{12units}{8units}[/tex]

                                   = [tex]\frac{3}{2}[/tex] ]

2. scaled trapezoid then rotated by 180°.

3. Then rotated trapezoid is shifted 1 unit down.

  By these transformations Bella's sequence was correct.

Therefore, Option A is the answer.

Q # 4 find the slope of the line through the pair of points A(2, -3), P(2, 9)

Answers

The answer is 12/0, which is undefined
The given points are (2, -3) and (2, 9)

The x-component of the two points is the same. Which means the line passing through the given two points is a vertical line and slope of a vertical line is undefined.

You can also validate it using the formula of finding slope.

Slope = (-3-9)/(2-2) = -12/0 = undefined

So, first option is the correct answer.

x·\sqrt[4]{x}
Rewrite simplest radical form

Answers

To solve this problem you must apply the proccedure shown below:

 1. You have the following expression given in the problem above:

 x√(4x)

 2. You must simplify it as below:

 (x)(4x)^1/2

 3. By the exponents properties, you have:

 4x^3/2
 √(4x^3)

 4. Finally, you obtain:

 2√(x^3)

 5. Therefore, as you can see, the answer is: 2√(x^3)

Answer:

b

Step-by-step explanation:

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Supposed a Visa card had a credit card number of 4162 0012 3456789a where a is the check number what is the check number? A) 0 B) 3 C) 9 D) 7

Answers

Answer:

Option B) 3

Step-by-step explanation:

we have the number

4162 0012 3456 789a

Find the value of a (check number)

step 1

Multiply every even-position digit (when counted from the right) in the number by two. If the result is a two digit number, then add these digits together to make a single digit

4162 0012 3456 789a

9(2)+7(2)+5(2)+3(2)+1(2)+0(2)+6(2)+4(2)

(18)+(14)+(10)+(6)+(2)+(0)+(12)+(8)

Remember that If the result is a two digit number, then add these digits together to make a single digit

so

(1+8)+(1+4)+(1+0)+(6)+(2)+(0)+(1+2)+(8)

(9)+(5)+(1)+(6)+(2)+(0)+(3)+(8)=34

step 2

add every odd-position digit

4162 00123456 789a

so

8+6+4+2+0+2+1=23

step 3

Adds  the result in step 1 and the result in step 2

34+23=57

The check-digit is what number needs to be added to this total to make the next multiple of 10

In our case, we’d need to add 3 to make 60

therefore

The check number is 3

What is the probability that a randomly thrown dart that lands within the rectangle lands within a shaded region? All of the circles are congruent, and the diameter of each circle is 100 cm. A. 39/200 B. 49/250 C. 98/125 D. 157/200

Answers

D is the answer because the circle has no sides so it’s 157/200

which has the smallest value 11 , 0.675,1.23,0.42,1.011

Answers

The number with the smallest value is 0.42.

Here are the numbers listed in order from least to greatest.

0.42, 0.675, 1.011, 1.23, 11

The reason has to do with the values of the position of the numbers. All Numbers to the left of the decimal point are whole numbers. Any number with numbers to the left have a whole number which is bigger than any decimal.

To the right of the decimal point the place values gets smaller the further you are to the right.

Compare 0.42 and 0.675
The 4 and 6 are both in the tenths place, therefore 0.42 is the smallest no matter how many more digits either has to the right of that number.

Solve each system of equation algebraically
y=x+2
y=-3x

Answers

Try this solution:
[tex] \left \{ {{y=x+2} \atop {y=-3x}} \right. \ =\ \textgreater \ \ \left \{ {{-3x=x+2} \atop {y=x+2}} \right. \ =\ \textgreater \ \ \left \{ {{y=2- \frac{1}{2}} \atop {x=- \frac{1}{2}}} \right. \ =\ \textgreater \ \ \left \{ {{y= \frac{3}{2}} \atop {x=- \frac{1}{2}}} \right. [/tex]

The easiest method to use to solve this equation is substitution. This is because we already have our second equation set equal to the variable y, so we can substitute the x values in for the variable y in the first equation, as follows:


y = x + 2

y = -3x


-3x = x + 2


To simplify, we should subtract x from both sides of the equation so that we can have all of the x terms isolated on the left side of the equation.


-3x - x = x - x + 2

-4x = 2


Finally, we must divide both sides of the equation by -4 to get the variable x alone.


x = -2/4


Because both the numerator and denominator of this fraction are divisible by 2, we can use this knowledge to simplify the fraction by dividing by the GCF of 2.


x = -1/2


Now that we know the value of x, we can substitute this value into either of our original equations to find out the value of y.


y = -3x

y = -3(-1/2)

y = 3/2


Therefore, your answer is x = -1/2 and y = 3/2, or written as an ordered pair (-1/2, 3/2).


Hope this helps!

The image below is a triangle drawn inside a circle with center O:


A triangle is shown inscribed inside a circle. The leg of the triangle labeled 4 inches passes through the center of the circle, O. The other two legs are labeled as 2 inches and 3 inches.


Which of the following expressions shows the area, in square inches, of the circle?


(π = 3.14)


3.14 ⋅ 2

3.14 ⋅ 3

3.14 ⋅ 22

2 ⋅ 3.14 ⋅ 22

Answers

Answer:

3.14 2^2

Step-by-step explanation:

The expressions shows the area, in square inches, of the circle will be 3.14 × 2² square units. Then the correct option is C.

What is a circle?

It is the close curve of an equidistant point drawn from the center. The radius of a circle is the distance between the center and the circumference.

The image below is a triangle drawn inside a circle with center O:

A triangle is shown inscribed inside a circle.

The leg of the triangle labeled 4 inches passes through the center of the circle, O.

The other two legs are labeled as 2 inches and 3 inches.

The expressions shows the area, in square inches, of the circle will be

Area of circle = (π/4) d²

The diameter of the circle is passing through center. Then the length of the diameter is 4.

Then the area of circle will be,

Area = (π/4) 4²

A = 3.14 × 4

A = 3.14 × 2² square units

The expressions shows the area, in square inches, of the circle will be 3.14 × 2² square units.

Then the correct option is C.

More about the circle link is given below.

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Q # 13 please Graph the image. of AMOP for the translation

Answers

The rule for translation one unit to the right will be
                                      ( x' , y' ) = ( x+1 , y )

M (-3,1) ⇒⇒⇒⇒ M' (-2,1)
O (1 ,4) ⇒⇒⇒⇒ O' (2 ,4)
P (3,-1) ⇒⇒⇒⇒ P' (4,-1)

See the attached figure

summation to integral? calculus

Answers

[tex]\displaystyle\sum_{k=1}^n\left(\dfrac{3k}n-1\right)^4\frac3n[/tex]

You should recognize the [tex]\dfrac3n=\dfrac{b-a}n[/tex] term on the right to represent the width of each equally-spaced subinterval of the integration interval [tex][a,b][/tex]. We don't know the endpoints' exact values just yet.

[tex]n[/tex] represents the total number of subintervals. If we fix it to some manageably small number, we can get a better picture of what the [tex]\left(\dfrac{3k}n-1\right)^4[/tex] term represents.

If [tex]n=3[/tex], the partial sum reduces to

[tex]\displaystyle\sum_{k=1}^3\left(\dfrac{3k}3-1\right)^4\dfrac33=\sum_{k=1}^3(k-1)^4=0^4+1^4+2^4[/tex]

This suggests the sum represents the left-endpoint Riemann summation to find the integral of [tex]x^4[/tex], and in particular, the integral seems to be taken over the interval [0, 3]. Taking the limit, we get

[tex]\displaystyle\lim_{n\to\infty}\sum_{k=1}^n\left(\dfrac{3k}n-1\right)^4\frac3n=\int_0^3x^4\,\mathrm dx[/tex]

Final answer:

In calculus, summation involves adding discrete values, while integration is akin to adding an infinite number of infinitesimally small products to find areas, volumes, etc. Integral calculus extends these concepts to continuous functions and is used, for example, to find position from acceleration by integrating twice.

Explanation:

The transition from summation to integral in calculus is an important concept that bridges the discrete world with the continuous. When we summate, we're adding together values to find a total amount. In a similar vein, an integral can be thought of as a continuous sum, where we're adding up infinitely small products to calculate an area, volume, or other quantities.

When performing an integral, the dimensions of what we're integrating must be consistent. For example, if we're integrating velocity (v) with respect to time (t), we obtain a dimension that is the product of the two, such as distance. This principle is rooted in the requirement of dimensional consistency, analogously understood in the phrase "You can't add apples and oranges."

Understanding the relationship between discrete sums and continuous integrals is crucial for applications in various fields, such as physics where integrals can represent cumulative effects over time or space. For example, integrating an acceleration function gives us velocity, and further integration yields position. This process allows us to work backward from acceleration to position, utilizing the power of integral calculus.

27.3 less than k is -57.7. What is the value of k ?

Answers

Simple logic. 1K = 1000. So, 1.66K =1660. Many people don't know what 1K means, it is natural. And while there are many people struggling on Facebook, posting weird duck-faced selfies just for the thirst of 100+ 'likes', I presume that you are lucky enough that you got 1600 views on Quora. That means a lot, buddy! :)

A pet store has 26 rabbits and hamsters. The number of rabbits is 2 more than double the number of hamsters. How many hamsters does the pet store have?

Answers


[tex]3x26 \: maybe[/tex]

Let the number of rabbits in the pet store is x

And the number of hamsters in the pet store is y.

Now, we have been given that pet store has 26 rabbits and hamsters. Thus, we have the linear equation

[tex]x+y=26...........(1)[/tex]

Now, number of rabbits is 2 more than double the number of hamsters. Hence, we have

[tex]x=2+2y[/tex]

Substituting this value of x in equation 1, we get

[tex]2+2y+y=26\\ 3y=24\\ y=8[/tex]

Thus, there are 8 hamsters in the pet store.

What is the sum of the roots of the polynomial shown below f(x)=x^3-4x^2-11x+30

Answers

The sum of the roots of a cubic is the opposite of the coefficient of the squared term (provided that the leading coefficient is 1).

The sum of the roots is -(-4) = 4.

_____
The graph shows the roots to be -3, 2, 5, whose sum is 4.

average of 2.99 2.59 3.50

Answers

Answer:

6.74

Step-by-step explanation:

add all numbers and divide how many numbers there are.

How to round 4.288 to the nearest hundredth

Answers

For this case we have the following number:
 4,288
 round to the nearest hundredth means that we must rewrite the number using only 2 decimal places.
 Therefore, we must rewrite the number as follows:
 4.29
 We observed that:
 1) the third decimal disappears
 2) the second decimal is rounded to the next number since the third decimal is greater than five.
 Answer:
 
4.29

Esther pays $467 per month for 5 years for a car. she made a down payment of $3,700. if the loan costs 7.1% per year compounded monthly, what was the cash price of the car?

Answers

The present value of the string of payments added to the down payment is $27,228.33. This is the cash price of the car.

The correct cash price is d) $27,228.33.

To determine the cash price of the car, we need to calculate the present value of all payments made by Esther, including her down payment.

Calculate the total number of monthly payments:
Total number of payments: 5 * 12 = 60

Determine the monthly interest rate:
Monthly interest rate: 0.071 / 12 = 0.0059167 (approximately)

Calculate the present value of the monthly payments using the formula for the present value of an annuity:

P = PMT × [tex]\frac{[1 - (1 + r)^{-n]} }{ r}[/tex]

P = 467 × [tex]\frac{ [1 - (1 + 0.0059167)^{-60}]}{ 0.0059167}[/tex] = $23,528.33

Add the down payment to the present value of the monthly payments to get the total cash price of the car:

Total cash price = $23,528.33 + $3,700 = $27,228.33

Therefore, the correct answer is (d) $27,228.33.

The complete question is

Esther pays $467 per month for 5 years for a car. she made a down payment of $3,700. if the loan costs 7.1% per year compounded monthly, what was the cash price of the car?

a) $23,528.33

b) $19,828.33

c) $29,820.57

d) $27,228.33

e) $37,220.57

A television is 36 inches by 18 inches. What is the area?

Answers

The area would be length times width so the answer is 648 squared inches!
we know that area of a rectangle is length(×)its breadth and the television is a rectangular screen so the area of television screen is 36 X 18 that is 648square inches.
hope this is helpful

simplify the expression 11x-(2x^2+8x).

Answers

-2x^2-3x is how you can simplify the expression

Hey can you please help me posted picture of question

Answers

When tossing two coins the sample space will be:

{HH , HT, TH, TT}

So total number of outcomes = 4
Favorable outcome is getting exactly one Tail.
So, number of favorable outcomes = 2

Probability of getting exactly one tail = 2/4 = 1/2

Thus, the correct answer is TRUE

Two quantities are related as shown in the table below:

x. y
2. 3
4. 4
6. 5
8. 6

Which equation best represents the relationship?

Answers

First you need to find the slope and in order to do that you need to use the following equation:

y-y
——
x-x

The y with the greatest value goes first and then the lowest. Same thing with x.

Choose two coordinates from the table

Ex: (4,4) & (2,3)

4-3=1
——-
4-2=2

The slop is 1/2 or 0.5

There is a y intercept which is 2. You get 2 when you divide 1 by 2

So the equation would be

y=1/2x+2 or y=0.5x+2


Hope this helped

A bank account earns interest at a rate of 3.5% per year ( in other words it increases in value by that percent) and starts with a balance of $350. Which of the following equations would give the account’s worth, W, as a function of the number of years, y, it has been gaining interest?

Answers

Final answer:

The account's worth, W, as a function of the number of years, y it has been gaining interest is given by the equation W = $350 + ($350  imes 0.035  imes y).

Explanation:

The equation that gives the account's worth, W, as a function of the number of years, y, it has been gaining interest is:

W = $350 + ($350  imes 0.035  imes y)

Here's an example:

If the account has been gaining interest for 2 years, then W = $350 + ($350  imes 0.035  imes 2) = $364.70.

Learn more about Simple interest here:

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Which of the following is the graph of y=|x-1|-4y=∣x−1∣−4y, equals, vertical bar, x, minus, 1, vertical bar, minus, 4?

Answers

The graph of
  y = |x -1| -4
is show here.

Answer:

The graph of given function is shown below.

Step-by-step explanation:

The given function is

[tex]y=|x-1|-4[/tex]           .... (1)

The vertex form of a absolute function is

[tex]y=a|x-h|+k[/tex]         .... (2)

where, a is a constant and (h,k) is vertex.

On comparing (1) and (2), we get

[tex]a=1,h=1,k=-4[/tex]

The vertex of the function is (1,-4). The table of values is

x            y

3          -2

2          -3

1          -4

0          -3

-1          -2

Plot these points on a coordinate plane. Draw a V-shaped curve by connecting these points with vertex at (1,-4).

In a school auditorium there are 33 seats in each row of seats. How many rows are needed for 528 students to each have a seat?

Answers

Okay so we have 528 students. Each row has 33 seats. To find the number of rows needed, you simply divide 528 students by 33 seats. 

528/33  = 16 rows. 
Final answer:

To find the number of rows needed for 528 students to each have a seat in a school auditorium with 33 seats in each row, divide the total number of students by the number of seats in each row. The answer is 16 rows.

Explanation:

To find the number of rows needed for 528 students to each have a seat in a school auditorium with 33 seats in each row, we need to divide the total number of students by the number of seats in each row.

So, the number of rows needed would be:

Rows needed = Total number of students ÷ Number of seats in each row

Substituting the given values:

Rows needed = 528 ÷ 33 = 16

Therefore, 16 rows are needed for 528 students to each have a seat in the auditorium.

Learn more about Finding the number of rows needed for students to have seats here:

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which set of number could represent the length of the sides of a right triangle? A 9 11 14 B 15 18 21 C 7 24 25 D 8 9 10

Answers

Common Pythagorean triples include
  (3, 4, 5)
  (5, 12, 13)
  (7, 24, 25)
  (9, 40, 41)
The only Pythagorean triple that is an arithmetic sequence is (3, 4, 5), so any arithmetic sequence that is a Pythagorean triple must be a multiple of that, such as (9, 12, 15) or (15, 20, 25).

The arithmetic sequences of selections B and D are unrelated to the (3, 4, 5) triple, so cannot be Pythagorean triples. For selection A, we know that 9² + 11² = 81 + 121 = 202 > 14², so that is not a right triangle.

The appropriate selection is ...
  C. 7, 24, 25
The correct answer is c 7 24 25
hope you did well

If one can of paint contains 2 2/5 gallons, how much paint is in 12 cans of paint?

Answers

12 cans will contain 28 4/5 gallons

Answer:12   2/4

Step-by-step explanation:

First of all that eqation is improper. So lets make that proper. To do that you just count by five till you get close to the number. 5,10,15,20 im  close so lets stay there. So then it would be 4 1/5. Then you have to multiple that by 12.

And your awnser would be 50/4

then you need to make it propper.

12  2/4

find the value of x

Answers

From the definition of an isosceles triangle, the bases of the triangle are always equal to each other. 

Knowing one of the bases on the triangle, we could know the other angle of the base.

This would be 43 degrees.

In other words, x would equal 43 degrees.


Hope this helps. If you have any questions, please put them in the comments below.

Answer:

43 degrees

Step-by-step explanation:

You can see that the triangle is congruent, so x is equal to 43. dont forget to include degrees!

A store purchases an item wholesale for 60$ and marks it up by 70 percent if there is a 7 percent tax on the item how much will the item cost

Answers

Answer:

109.14

Step-by-step explanation:

to Start off do 60 x .70, then add the answer to 60, then multiply by .07 then add that to 102, for the answer of 109.14

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