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Illusion [34]
3 years ago
13

Why does the sound of a person’s voice sound different underwater than when they are speaking in air?

Physics
1 answer:
Tems11 [23]3 years ago
3 0
Sound waves actually travel much faster in water than air, but words and the direction of the noise are distorted.
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Objects 1 and 2 attract each other with a gravitational force of 12 units. If the mass of Object 2 is tripled, then the new grav
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Explanation:

Fgravity = G*(mass1*mass2)/D².

G is the gravitational constant, which has the same value throughout our universe.

D is the distance between the objects.

so, if you triple one of the masses, what does that do to our equation ?

Fgravitynew = G*(3*mass1*mass2)/D²

due to the commutative property of multiplication

Fgravitynew = 3* G*(mass1*mass2)/D² = 3* Fgravity

so, the right answer is 3×12 = 36 units.

5 0
2 years ago
The coefficient of cubical expansion of a substance depends upon
zzz [600]
<span>I think that the coefficient of cubical expansion of a substance depends on THE CHANGE IN VOLUME.

Cubical expansion, also known as, volumetric expansion has the following formula:

</span>Δ V = β V₁ ΔT

V₁ = initial volume of the body
ΔT = change in temperature of the body
β = coefficient of volumetric expansion.

β is defined as the <span>increase in volume per unit original volume per Kelvin rise in temperature.
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With the above definition, it is safe to assume that the <span>coefficient of cubical expansion of a substance depends on the change in volume, which also changes in response to the change in temperature. </span>
7 0
3 years ago
A hockey puck is sliding at a constant rate of 2m/s on a frictionless surface. How fast will the puck be moving after 10 sec
AnnyKZ [126]
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5 0
2 years ago
15) Very cold climates occur at Earth's North and South Poles because the polar regions
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Because the polar regions receive low-angle insolation.

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3 0
3 years ago
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Which energy transformation occurs in the core of a nuclear reactor?
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It's either A or B because it starts off as nuclear energy.
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3 years ago
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