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aleksandrvk [35]
2 years ago
9

Which is true of a mechanical wave?

Physics
2 answers:
timurjin [86]2 years ago
5 0
A) It must have a medium.
nydimaria [60]2 years ago
5 0

A) True

Mechanical waves need a medium to travel.

B) False.

Mechanical waves need a medium to travel. So they can not travel in empty space.

C) False

Sound is a mechanical wave since it needs a medium to travel. light wave is electromagnetic wave and it can travel in empty space too.

D) False

Mechanical waves need a medium to travel. So they can not travel in empty space.

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Can i have more information?
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3 years ago
A charge +1.9 μC is placed at the center of the hollow spherical conductor with the inner radius 3.8 cm and outer radius 5.6 cm.
Archy [21]

To solve this problem we will apply the concepts related to load balancing. We will begin by defining what charges are acting inside and which charges are placed outside.

PART A)

The charge of the conducting shell is distributed only on its external surface. The point charge induces a negative charge on the inner surface of the conducting shell:

Q_{int}=-Q1=-1.9*10^{-6} C. This is the total charge on the inner surface of the conducting shell.

PART B)

The positive charge (of the same value) on the external surface of the conducting shell is:

Q_{ext}=+Q_1=1.9*10^{-6} C

The driver's net load is distributed through its outer surface. When inducing the new load, the total external load will be given by,

Q_{ext, Total}=Q_2+Q_{ext}

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5 0
3 years ago
Why does the density of a substance remain the same for different amount of the substance
tresset_1 [31]

Think of it this way: 
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-- If a certain salad dressing has 40 calories PER Tablespoon, it doesn't
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-- Density means '(mass) PER unit of volume'.  Whether you have a tiny
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6 0
3 years ago
PLEASE ITS AN Emergency IF ITS RIGHT I WILL GIVE BRAINLIEST
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Uh I think it’s point guard
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2 years ago
HELP ME 20 POINTS!!!Assume that the average volume of an adult human body is one-tenth
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Answer:

,Assume that the average volume of an adult human body is one-tenth

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volume equal to the volume of all the adults in the world.

8 0
3 years ago
Read 2 more answers
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