The transmitted intensity i1 is approximately 19.32 watts per square meter.
An indicator of a physical phenomenon's strength or power, such as light, sound, or radiation, is its intensity. It is often expressed in terms of the quantity of energy being transmitted or received per unit area or volume. For instance, the intensity of light is expressed in watts per square metre, while the strength of sound is expressed in watts per square metre per hertz. Distance, direction, and the qualities of the medium through which the phenomenon is transmitted can all have an impact on intensity.
To find the transmitted intensity (i1), we need to use the formula:
[tex]i1 = i0 * cos(θ0 - θta)[/tex]
where i0 is the initial intensity, [tex]θ0[/tex]is the initial angle, and [tex]θta[/tex] is the transmitted angle.
Step 1: Calculate the difference between the angles:
[tex]Δθ = θ0 - θta[/tex] = 25.0 degrees - 40.0 degrees = -15.0 degrees
Step 2: Convert the angle difference to radians:
[tex]Δθ[/tex](in radians) = -15.0 degrees *[tex](\pi /180)[/tex] ≈ -0.2618 radians
Step 3: Calculate the cosine of the angle difference:
[tex]cos(Δθ) ≈ cos(-0.2618)[/tex]≈ 0.9659
Step 4: Calculate the transmitted intensity (i1):
i1 = i0 * [tex]cos(Δθ)[/tex] = 20.0[tex]W/m^2[/tex] * 0.9659 ≈ 19.32 [tex]W/m^2[/tex]
So, the transmitted intensity i1 is approximately 19.32 watts per square meter.
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a b c d e f g h i j k l m n o p q r s t u v w x y z
Answer:
???
Step-by-step explanation:
Answer:
now i know my abc's
Step-by-step explanation:
Nathan launches a water balloon vertically from a platform on his roof. The height of the balloon (in feet) is represented by the equation h=−16t2+28.7t+32.4, where t is the time (in seconds) after he launches the water balloon. What is the maximum height of the balloon?
Answer:
45.27feet
Step-by-step explanation:
Given the height of the balloon (in feet) represented by the equation h=−16t2+28.7t+32.4, where t is the time (in seconds)
Note that the velocity of the balloon at maximum height is zero, hence;
v = dh/dt =0
-32t+28.7 = 0
-32t = -28.7
t = 28.7/32
t = 0.897secs
Get the maximum height
Recall that h=−16t²+28.7t+32.4
h = -16(0.897)²+28.7(0.897)+32.4
h= -12.87+25.74+32.4
h = 45.27feet
Hence the maximum height reached is 45.27feet
pls I neeeed to ace this test.
Answer:
but
Step-by-step explanation:
moreover is more of a transition that means "also"
furthermore is used as a conclusion
Answer:
But
Step-by-step explanation:
Im pretty sure is the right answer is but it could be while to but is not an option so im a 100% sure is A-But
Which is equivalent to 72 inches?
O A 0.72 yards
O B. 2 yards
O c. 6 yards
O D. 7.2 yards
O E. 36 yards
the answer is B because there is 36 inches in 1 yard
Answer:
Its 2 yards
Step-by-step explanation:
divide 72 by 36
The equations 3x - 4y = -2,4x-y-4, 3x+4y= 2, and 4x+y=-4 are shown on the graph below.
-5
0
5 X
Which is the approximate solution for the system of equations 3x+4y = 2 and 4x+y=-4?
Answer:b
Step-by-step explanation:
PLEASE HELP!!! I need an urgent answer and I'll give brainiest just please answer this easy question!
do like show in pic
hope it helps you
Please help giving brainliest
Answer:
this is a scalene triangle. we can see that none of the side lengths and none of the angles are equivalent to each other. that's why it's scalene.
Find the remainder when 2x^3 + 15x^2 + 31x + 12 is divided by (x-1)
Answer:
1/
2 3 15 2 31 12
2 1 14 -12 43
__________________
2 1 14 -12 43 -31
so the answer is r=-31
Answer:
remainder = 60
Step-by-step explanation:
Given f(x) divided by (x - h) then the remainder is f(h)
f(x) = 2x³ + 15x² + 31x + 12 , then
f(1) = 2(1)³ + 15(1)² + 31(1) + 12
= 2 + 15 + 31 + 12 = 60 ← remainder
PLEASE HELP ONLY IF YOUR FOR SURE!! <3 What is the value of x in the figure?
Enter your answer in the box.
x =
Answer:
68. We just subtract 22 from 90
What is the midpoint between points (4, 7) and (1, 1)?
Answer:
(2.5, 4)
Step-by-step explanation:
Refer to the formula above. We will sub our points into it.
(4, 7) (1, 1)
(x¹, y¹) (x², y²)
[tex]( \frac{4 +1}{2} \frac{7 + 1}{2} )[/tex]
(5/2, 8/2)
(2.5, 4)
Ashley made 2 out of 4 total shots. What percent of her shots did she make?
Answer:
50%
Step-by-step explanation:
2 divided by 4 is .5
.5 ×100 =50
if you simplify in fraction form it would be 2/4 equals 1/2 which would still give you the same answer
ILL MARK BRAINLIEST AND 20 POINTS FOR THE FIRST TO HELP! ITS DUE IN 10! PLEASE AND THANKS
Answer:
7/30
Step-by-step explanation:
Please let me know if you want me to write an explanation for my answer :)
In parallelogram BCDE if m EBC=45 find m DEB
Answer:
x = 135
Step-by-step explanation:
parallelograms have supplementary angles
180 - 45 = 135
Answer:
x = 135 degrees
Step-by-step explanation:
Because this is a parallelogram, the opposite sides are parallel
45 and x = 180 because they are corresponding congruent angles
180-45=135
A store wants employees to start wearing uniforms to work. The plans to purchase the uniforms and hand out 5 uniforms to every employee one for each day or the week. Uniforms come in packs of 8, and the store plans to purchase 56 packs of uniforms. How many employees can the store give uniforms to?
Answer:
89 employees
Step-by-step explanation:
Uniforms come in packs of 8, and the store plans to purchase 56 packs of uniforms.
This means
1 pack = 8 uniforms
56 packs = x uniforms
Cross Multiply
x = 56 × 8 uniforms
x = 448 uniforms
The plan is to hand out 5 uniforms to every employee one for each day or the week.
Hence, the number of employees that the store can give can uniforms to is calculated as:
5 uniforms = 1 employee
448 uniforms = x employees
Cross Multiply
5x = 448 × 1 employee
x = 448/5
x = 89.6 employees.
Since a person cannot be represented by decimal, the store can give uniforms to 89 employees
Please help with ALEKS >-< ..................................
Answer:
4.5
Step-by-step explanation:
From the file, we see that;
Horizontal distance from bottom of ladder to side of house = 2
Length of ladder leaning against side of the house = 4 m.
Now we want to find the distance from the top of the ladder to the ground which we can call d.
Thus we can find it from pythagoras theorem.
d = √(2² + 4²)
d = √(4 + 16)
d = √20
d = 4.47
To the nearest tenth gives;
d = 4.5
Jon and Keith save money at the end of each month and begin saving money at the same time . Jon's savings after m months are modeled with the formula f(m) = 40m + 20 Keith's savings after m months are modeled with the formula g(m) = 35m + 45 At the end of how many months will they have saved the same amount of money ?
Answer:
g5654
Step-by-step explanation:
Brainliest to whoever gets it right: Apply the appropriate mathematical operation to solve this occupation related problem.
Labor rate: $8.75 per hour.
Hours worked: 16
Total price of services: $224
Overhead rate: %
Answer:
37.5%
Step-by-step explanation:
Labor rate = 8.75 dollars per hour.
Hours worked = 6
Direct cost of labor = 140 dollars
Total price of services = 224 dollars
Therefore, the overheads = 84 dollars which is
84 X 100 / 224 = 37.5%
Find the area of a regular pentagon with an apothem of 8.95 cm and a side length of 13 cm. (round to the nearest whole number)
Answer:
C) 291 cm^2
Step-by-step explanation:
Sorry it took me so long to answer, but I am taking a test with this question and I want to make sure I got it right on the test before I gave you the answer.
The test I am taking is on USA TESTING and I got 100
Help me please!!!!!!!!!!!!
The freshman convention was held at the activity center with 12 567 seats. If 120 seats were not occupied. How many seats were occupied?
What is the solution to the inequality?
n - 15 > -5
pls help ♀️
Step-by-step explanation:
Given inequality
n - 15 > - 5
The inequality can also be written as :
n - 15 = - 5
n = - 5 + 15
n = 10
or
n > 10
Hope it will help :)
Answer:
n>10
Step-by-step explanation:
n-15>-5
n>-5+15
n>10
Determine the number of operations needed to solve 7c = 84
Answer:
12
Step-by-step explanation:
7c=84
c=84/7
c=12
Answer:
2
Step-by-step explanation:
You need division and multiplication (division for 84/7 and multiplication to identify 7c = 7 x c), which means 2.
Hope that helps!
Evaluate the expression and enter your answer below.
6^2-3
To the power
Answer:
[tex]33[/tex]
Step-by-step explanation:
[tex]6^2-3[/tex]
First we do 6^2:
[tex]6^2\\6*6=36[/tex]
Now we have to subtract by 3:
[tex]36-3=33[/tex]
33 is your final answer.
6^2-3
Start by doing the power
6^2 = 36
Now subtract by the number 3 to get our answer
36-3=33 (Answer)
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A specialty shop procures silver necklaces for 15$ a piece and offers them to customers for 33$ each. What is the mark-up percentage?
Answer:
54.5%
Step-by-step explanation:
Given data
Cost price= $15
Selling price= $33
Mark up percent =????
%markup= selling-cost/selling*100
substitute
%markup= 33-15/33*100
%markup= 18/33*100
%markup=0.545*100
%markup= 54.5%
Hence the Percent markup is 54.5%
PLEASE HELP ANSWERS ONLY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
1. 13n+15
2. 12n+18
3. 18n+12
(4x+7) (4x-7)=
give the solution pleasee
Answer:
16x - 49
Step-by-step explanation:
Answer:
Im not sure 4x+8 and then 4×-7??? do it on your calendar frl amd you can see amd type exactly what the guesting..
Find slope. I NEEDDDD HELPPPPP IMA MARK BRAINLIESTTT
Answer:
-1/3
Step-by-step explanation:
find x or solve for x .
Which pair of numbers has a sum of 100?
( A) 39,61
(B) 49,61
(C) 59, 51
(D) 39,51
Answer:
a
Step-by-step explanation:
39+61 is the only pair that make 100.
triangle ABD~ triangle DBC the perimeter of triangle ABD=36, fond the perimeter of triangle DBC.
Answer:
Perimeter of ΔDBC = 48 units
Step-by-step explanation:
It's given in he question,
ΔABD ~ ΔDBC
Therefore, by the definition of similar triangles,
Corresponding sides of both the triangle will be proportional.
[tex]\frac{AB}{DB}= \frac{BD}{BC}= \frac{AD}{DC}[/tex]
[tex]\frac{9}{12}= \frac{12}{16}= \frac{AD}{DC}[/tex]
[tex]\frac{3}{4}=\frac{AD}{DC}[/tex]
AD = [tex]\frac{3}{4}DC[/tex] ----------(1)
Since, perimeter of ΔABD = 36,
AB + BD + AD = 36
9 + 12 + AD = 36
AD = 36 - 21
AD = 15
From equation (1),
15 = [tex]\frac{3}{4}(DC)[/tex]
DC = 20
Perimeter of ΔDBC = DB + BC + DC
= 12 + 16 + 20
= 48
Therefore, perimeter of ΔDBC = 48 units is the answer.