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SashulF [63]
2 years ago
4

For a diffraction horn loudspeaker, sound emerges through a rectangular opening. The opening of a diffraction horn has a width o

f 0.12 m. If the speaker emits a continuous tone with a wavelength of 0.09 m, at what angle does the first minimum occur
Mathematics
1 answer:
Dafna11 [192]2 years ago
6 0

Answer:

48.6 ⁰

Step-by-step explanation:

Data:

Conditions for the first minimum are as follows:

a sinΘ = λ         ...(1)

where a = 0.12 m

           λ = 0.09 m

From condition (1) sin Θ =  λ/a

                                        = 0.09/0.12

                                   Θ  = sin ⁻¹ (0.09/0.12)

                                         = 48.6⁰ Ans    

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Sonam sold two cars for nu. 55055 each. one has gained him 16% while the other made him loss 16%. how much does he loss or gain
statuscvo [17]

Answer: Total Loss or Gain = $0

<u>Step-by-step explanation:</u>

Gain:   $55,055 (1 + 0.16)

        = $55,055 (1.16)

        = $63,863.80

Profit = $8,808.80

Loss:   $55,055 (1 - 0.16)

        = $55,055 (0.84)

        = $46,246.20

Loss = -$8,808.80

Profit + Loss

= $8,808.80 - $8,808.80

= 0

5 0
2 years ago
The batting Wang Xiu Ying uses to fill quilts has a thermal conductivity rate of 0.030.030, point, 03 watts (\text{W})(W)left pa
alexgriva [62]

Answer:

0.0003W/cm°C

Step-by-step explanation:

The question is not properly written. Here is the correct question.

The batting wang xiu ying uses to fill quilts has a thermal conductivity rate of 0.03 watts (W) per meter(m) per degree celsius. what is the batting thermal conductivity when w/cm•c

Given the thermal conductivity in W/m°C to be 0.03W/m°C

We are to rewrite the value in W/cm°C

The difference is the unit. The only thing we need to do is to simply convert the unit (metres) in W/m°C to centimeters (cm)

Since 100cm = 1m, 0.03W/m°C can be expressed as shown below;

= 0.03W/m°C

= 0.03 × W/1m×°C

Note that 1m = 100cm, substituting this conversion into the expression, it will become;

= 0.03 × W/100cm × °C

= 0.03/100 × W/cm°C

= 0.0003W/cm°C

Hence the battling thermal conductivity in W/cm°C is 0.0003W/cm°C

4 0
2 years ago
5000 containers are stacked 20 wide and 50 long on a ship. How many containers high are they? Pls answer and give explanation, t
shutvik [7]

Answer:

5 containers high

Step-by-step explanation:

Given that :

Given :

Width = 20 containers

Length = 50 containers

Total containers = 5000

Hence,

Total containers = width * length * height

5000 = 20 * 50 * height

5000 = 1000 * height

Height = 5000 / 1000

Height = 5 containers

3 0
2 years ago
On a piece of paper, graph y = 2x - 4. Then determine which answer matches<br> the graph you drew.
nasty-shy [4]
This is a linear graph where the y-int. Is (0,-4) and the x-int. Is (2,0)

3 0
2 years ago
Using approximations to 1 significant figure,
malfutka [58]

Answer:

200

Step-by-step explanation:

Given:

0.482 x 61.2^2 ÷ √98.01

61.2^2 = 3745.44

√98.01 = 9.9

So,

0.482 × 3745.44 ÷ 9.9

= 1,805.30208 ÷ 9.9

= 182.35374545454

To one significant figure

= 200

One significant figure means only 1 non zero value and others are zero

5 0
2 years ago
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