<span>A = 2 * (0.5ab) + b (10 - a) = ab + 10b - ab = 10b

10b = 30√2; b = 3√2

sin α = 3√2 / 6; α = 45 degrees

Small angle: 45°; Large angle: 135°</span><span>
</span>

4 0

2 years ago

What is the decibel level of the sound of a ticking clock with intensity 10−9 watts per square inch? Use a logarithmic model to

In-s [12.5K]

Answer:

β = (-0.19 dB).

Step-by-step explanation:

The formula which is used to calculate the decibel level of a sound is given by :

$\beta=10\log (\dfrac{I}{I_o})$

I is intensity of the sound of a ticking clock

$I_o=10^{-12}\$ watts per square meter

Since, $1\ \text{inch}^2=\dfrac{1}{1550}\ \text{m}^2$

The intensity of a monster truck is converted into per square meter as follows:

$10^{-9}\ {W/in^2}= \dfrac{10^{-9}}{1550}\ W/m^2\\\\10^{-9}\ {W/in^2}=6.45\times 10^{-13}\ W/m^2$

So, Decibal level is :

$\beta=10\log (\dfrac{6.45\times 10^{-13}}{10^{-12}})\\\\\beta =-0.19\ dB$

So, the decibel level of the sound of a ticking clock is (-0.19 dB).

7 0

2 years ago

Read 2 more answers

Karl drove 617.3 miles. For each gallon of gas the car can travel 41 miles.Select a reasonable estimate of the number of gallons

zaharov [31]

Time for fractions!!!

I’m going to set a rate of miles per gallon and then cross multiply to get me answer.

41miles/gallon = 617.3/xgallons

617.3 multiplied by 1 and then divided by 41 = about 15.05 gallons

A reasonable estimate then is 15 and a half gallons, because rather than measuring down to the hundredths, the next closest and reasonable measurement is 15 and a half or under.

Comment if you don’t understand and I’ll try to help.

5 0

2 years ago

A company makes 150 bags.

irina [24]

35% chance because the company made 150 bags

4 0

1 year ago