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vova2212 [387]
4 years ago
11

The sound level near a noisy air conditioner is 70 dB. If two such units operate side by side, the sound level near them would b

e The sound level near a noisy air conditioner is 70 . If two such units operate side by side, the sound level near them would be 70 dB. 73 dB. 105 dB. 140 dB.
Physics
1 answer:
Schach [20]4 years ago
7 0

Answer:

73 db

Explanation:

A single air conditioner is equivalent to 70 dB frequency. An extra air conditioning unit would therefore double the sound frequency. It does not, however, double the decibels to 140 dB. Instead, it adds only 3 dB to the 70 dB, making the total decibels of two air conditioning units equal to 73 db

Hence the correct option is b that is 73 db

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Which of the following are not examples of circular motion? Check all that<br> apply
CaHeK987 [17]

B.riding on a ferris wheel

E.a satellite orbiting the Earth

Explanation:

A person riding on a ferris wheel and a satellite orbiting the earth both depicts circular motion.

Circular motion is the motion of a body about a fixed axis or center.

  • The motion path of the body forms a circle around the center.
  • In circular motion, the travel path is along a circle.
  • An orbiting satellite traces out its orbit round the earth.
  • At certain times, it passes through that point over and over again.
  • This is similar to that of a ferris wheel

Other options gives other types of motion.

learn more:

circular motion brainly.com/question/2562955

#learnwithBrainly

5 0
3 years ago
A 5 kg block accelerates across a horizontal surface at 7 m/s^2 when you exert a 60 N force on it. What is the force of friction
alina1380 [7]
5 kg block and 7 m/s^2 = 14
3 0
3 years ago
When you drop a ball it accelerates downward at 9.8 m/s2. If you instead throw it downward, then its acceleration immediately af
damaskus [11]

Answer:

a. 9.8 m/s2.

Explanation:

The acceleration depends on the force of gravity. It's independent of the velocity of the ball.

6 0
3 years ago
Two models of the same compound are shown. In what way is Model B better than Model A? Model B shows the types of elements in th
irina [24]

Answer: Option (B) is the correct answer.

Explanation:

When model B shows three dimensional shape of the molecule then it becomes easier to visualize the exact shape or geometry of the molecule as we get to know how atoms are bonded together.

Therefore, with the help of this it would be easy to know the hybridization of molecule. Basically, we will get to know the type of molecule represented by model B.

Thus, we can conclude that the statement Model B shows the three-dimensional shape of the molecule, but Model A does not represents Model B better than Model A.

6 0
3 years ago
Read 2 more answers
you have dissolved 10g sodium oxide in 200 ml water .calculate the concentration of the solution .physical​
gladu [14]

Answer:

0.05

Explanation:

Divide the mass of the solute by the total volume of the solution. Write out the equation C = m/V, where m is the mass of the solute and V is the total volume of the solution. Plug in the values you found for the mass and volume, and divide them to find the concentration of your solution.

6 0
3 years ago
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