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3 years ago

When a wave propagates through a medium the molecules of the medium?

Physics

1 answer:

Maurinko [17]3 years ago

5 0

The molecules of the medium move back and forth in response to the wave.

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What is the name of the force that acts between any two objects because of their masses?

svetoff [14.1K]

Answer:

Explanation:

The force of attraction between 2 masses.

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3 years ago

A mixture of helium and oxygen is used in scuba diving tanks to help prevent ""the bends"". 46 L helium and 12 L oxygen are comb

marin [14]

Answer

given,

For helium

Volume,V = 46 L

Pressure,P = 1 atm

Temperature,T = 25°C = 273 +25 = 298 K

R=0.0821 L . atm /mole.K

n₁ = ?

number of moles

we know

P V = n R T

$n_1 =\dfrac{46 \times 1}{0.0821\times 298}$

n₁ = 1.89 moles

For oxygen

Volume,V = 12 L

Pressure,P = 1 atm

Temperature,T = 25°C = 273 +25 = 298 K

R=0.0821 L . atm /mole.K

n₂ = ?

number of moles

we know

P V = n R T

$n_2 =\dfrac{12 \times 1}{0.0821\times 298}$

n₂ = 0.49 moles

Total volume of tank = 5 L

temperature of tank = 298 K

Partial pressure of helium

$P_1=\dfrac{n_1 R T}{V}$

$P_1=\dfrac{1.89\times 0.0821\times 298}{5}$

P₁ = 9.25 atm

Partial pressure of oxygen

$P_2=\dfrac{n_2 R T}{V}$

$P_2=\dfrac{0.49\times 0.0821\times 298}{5}$

P₂ = 2.39 atm

total pressure

P = P₁ + P₂

P = 9.25 + 2.39

P = 11.64 atm

8 0

3 years ago

In the United States, where can volcanoes be found?

Sedbober [7]

The volcanoes of USA are located along the west coast, at the subduction of the Pacific and North American tectonic plates. During the 20th century there were only two eruptions in continental USA; Lassen in 1915, and Mt St Helens in 1980. Alaska and Hawaii contain currently active volcanoes. hope this helps:)

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3 years ago

A process occurs in which a system's potential energy increases while the environment does work on the system.

iogann1982 [59]

Ok, now what do you want to know about it?

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3 years ago

Study the analogy, and then answer the question that follows.

nordsb [41]

What kind of analogy is this?
A. synonyms
B. part to whole
C. degrees of intensity
D. cause to effect
This is because a synonym refers to things like "normal" or "regular" like your calling someone something.

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3 years ago

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