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liubo4ka [24]
3 years ago
15

By how many decibels do you reduce the sound intensity level due to a source of sound if you triple your distance from it? assum

e that the waves expand spherically.
Physics
1 answer:
sweet-ann [11.9K]3 years ago
4 0

New sound intensity level after the move is

                          10 log (1/3²)

                       =  -20 log (3)

                       =  -20 (0.4771)  =   9.54 dB LOWER than before the move.
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You push on a desk with a force of 150 N to the right. Your friend pushes on the same desk with a force of 50 N to the left . Wh
exis [7]

Answer:

The net force is 100 N to the right.

Explanation:

To solve this problem, we simply add together the forces.  Since we know that there is a greater force to the right, we will designate this as the positive direction and the left as the negative direction.

To find the net force, let's add together the two forces we are given using our new positive/negative designations:

+150 N right - 50 N left

Now, we just perform simple subtraction to get:

100 N right

Therefore, the answer is that the net force is 100 N to the right.

Hope this helps!

5 0
3 years ago
Explain the relationship between lightning and storm clouds.
LuckyWell [14K]

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3 0
2 years ago
Pls help im begging you
Lostsunrise [7]

Answer:

I think it's TRUE because forces change an object's motion but dont quote me on it ok? Cause I'm not a 100 percent sure

7 0
3 years ago
How can we search for evidence that other planets were once habitable?
Slav-nsk [51]

Answer:

Hey

Good question

How can we know if I planet was once inhabited by life? There diferent tequnecs for this. The first would be searching in the soil for fossilized microbes. in June of 19, 1976 Viking 1 was launched on its way to mars to began the search of life els wear. What this little lab did was drill a hole in the marsion terrain and take a sample of its soil to search for microbes or microbe fosles. Sadly it did not find anything. Other technics are to search for ruins on the planet or exoplanet. I do not have much to say about this method because it has never been used.

Hope it helped (i wrote all that).

Spiky Bob your answerer

Below is a picture of Carl Sagan next to the Viking Voyager 1. Obveosly this is just a modal. you could not breathe on mars.

4 0
3 years ago
Please Help Me
JulijaS [17]

1. a=Δv/Δt=(v-vo)/t=(0-25)/5=-25/5=-5 m/s²

The "-" sign shows us that the car has a slow motion


2.a=Δv/Δt=(v-vo)/t=(10-0)/4=10/4=2,5 m/s²


3.they do not have acceleration because they go at constant speed


7 0
4 years ago
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