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Elan Coil [88]
4 years ago
9

Because sound is a wave, it's possible to make a diffraction grating for sound from a large board of sound-absorbing material wi

th several parallel slits cut for sound to go through. When 9.0 kHz sound waves pass through such a grating, listeners 12 mfrom the grating report "loud spots" 1.3 m on both sides of center.
What is the spacing between the slits?

Use 340 m/s for the speed of sound.
Physics
1 answer:
Anon25 [30]4 years ago
5 0

Answer:

Lol

Explanation:

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Neil has 3 partially full cans of white pants. they contain 1/3 gallon, 1/5 gallon,and 1/2 gallon of paint About how much paint
Oliga [24]
He has 1 1/30 gallons, or 31/30 gallons, you can find this by setting all the fractions to a common denominator and adding them
7 0
4 years ago
Which theory (or theories) of dreaming do you believe is the best explanation for why we dream​
Semmy [17]

Answer:that your subconscious is trying to tell you something

Explanation:

3 0
3 years ago
A 4-kilogram cat is resting on top of a bookshelf that is 3 meters high. What is the cat’s gravitational potential energy relati
hichkok12 [17]
The answer is 117.6 J

The potential energy of the object is actually its stored energy:

<span>E = m · g · h
E - the potential energy of the object,
m - the mass of the object,
g - acceleration due to gravity,
h - the height of the object.

m = 4 kg
g = 9.8 m/s</span>²
h = 3 m

E = 4 * 9.8 * 3 = 117.6 J
4 0
3 years ago
A rope pulls a 20 kg box up. If the tension in the rope is 275 N, what is the acceleration of the box?
Nana76 [90]

Answer:

<h3>The answer is 13.75 m/s²</h3>

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

a =  \frac{f}{m}  \\

f is the force

m is the mass

From the question we have

a =  \frac{275}{20}  =  \frac{55}{4}  \\

We have the final answer as

<h3>13.75 m/s²</h3>

Hope this helps you

4 0
3 years ago
20 points Please And WILL mark a as a brainlest
boyakko [2]
Probably the earth traveling around the sun
3 0
3 years ago
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