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Kay [80]
3 years ago
10

A source of sound is detected in the middle of a room. Which can account for a decrease in sound intensity for an observer?

Physics
2 answers:
dedylja [7]3 years ago
8 0

Answer:

D

Explanation:

schepotkina [342]3 years ago
7 0

Answer:

It's D

Explanation:

The farther you are from the source, the lower the intensity of sound. Speed is not related to the intensity of sound, as the speed of sound is a constant. Therefore, a decrease in sound intensity for an observer can be caused by an increase in the radius from the source, which makes the observer farther away.

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Which one of the following is a derived SI unit?<br>A.newton B.meter C.mole d.Kilogram ​
marusya05 [52]

Answer:

Meter

Explanation:

I'd say meters, cause it's the SI unit of length,

which is a Derived Quantity.

5 0
3 years ago
A 45.0-N force pushes a cart 12.5 meters down a hallway. What is the work done on the cart?
makvit [3.9K]

Answer:

562.5J

Explanation:

The following were obtained from the question:

F = 45N

d = 12.5m

w =?

The work done can be achieved by using

w = F x d

w = 45 x 12.5

w = 562.5J

3 0
3 years ago
Can i please get some help with this.
Ivenika [448]

the answer is D cuz electricity is a conductive

5 0
4 years ago
Ô tô chuyển động trên đường cong có bán kính R = 300(m). Nếu vận tốc ôtô tăng đều từ v1 =
kow [346]

Answer:

Mc ,12,4

Explanation:

7 0
3 years ago
While driving down the road, a grasshopper strikes the windshield of a bus and makes a mess in front of the face of the driver.
nlexa [21]

Answer:

The force on the grass hopper is equal and opposite to the force on the wind shield.

Explanation:

It is a known fact every action has an equal and opposite reaction. Here the action force is the grasshopper hitting the windshield.

The reaction force is the force exerted by the windshield on the grasshopper.

If the force of windshield on the grasshopper is more, grasshopper would have been thrown away. If the grasshopper's force on the windshield is greater, the windshield would have broken.

But here these constitute equal and opposite action-reaction pair of forces and so the grasshopper is able to repeatedly strike the windshield.

3 0
3 years ago
Read 2 more answers
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