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4 years ago

Which of these is one way that mechanical waves differ from electromagnetic waves?

Chemistry

2 answers:

djyliett [7]4 years ago

8 0

Answer:

Mechanical waves require a medium and electromagnetic waves do not.

Explanation:

Electromagnetic waves are essentially a combination of electric and magnetic fields produced by the motion of charged particles. They do not require a medium to travel and can simply propagate through space. For example, light waves are electromagnetic waves

Mechanical waves are energy waves that are produced by inducing a certain disturbance in a medium. These waves require a medium to propagate and cannot travel in empty space. For example, sound waves are mechanical waves.

Softa [21]4 years ago

6 0

Electromagnetic waves differ from mechanical waves in that they do not require a medium to propagate. This means that electromagnetic waves can travel not only through air and solid materials, but also through the vacuum of space.

Mechanical waves require a medium and electromagnetic waves do not.

Hope this helps :)

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An aluminum cup of 140 cm3 capacity is completely filled with glycerin at 20°C. How much glycerin will spill out of the cup if t

mel-nik [20]

Explanation:

The given data is as follows.

coefficient of volume expansion of glycerin ( $\beta$ ) = $5.1 \times 10^{-4} 1/^{o}C$

linear expansion coefficient of aluminum, $(\alpha_{A})$ = $23 \times 10^{-6} 1/^{o}C$

Volume = 100 $cm^{3}$

The increase in volume of the cup will be calculated as follows.

$\Delta V_{c} = V \times 3 \times \alpha \times \Delta T$

= $100 cm^{3} \times 3 \times 23 \times 10^{-6} \times (31 - 20)^{o}C$

= $75900 \times 10^{-6} cm^{3}$

= 0.0759 $cm^{3}$

Formula for increase in volume of glycerine is as follows.

$\Delta V_{g} = V \times \beta_{g} \times \Delta T$

= $100 cm^{3} \times 5.1 \times 10^{-4} 1/^{o}C \times (31 - 20)^{o}C$

= 0.5610 $cm^{3}$

Therefore, volume of glycerin spilled is calculated as follows.

$\Delta V = \Delta V_{g} - \Delta V_{c}$

= (0.5610 - 0.0759) $cm^{3}$

= 0.4851 $cm^{3}$

Thus, we can conclude that 0.4851 $cm^{3}$ glycerin will spill out of the cup.

6 0

3 years ago

What is the pressure in a container that has 3 atm H2, 2 atm of N2 and 5 atm of F2?

LekaFEV [45]

<h3>Pressure has additive properties meaning that if you add the partial pressures together, you obtain total pressure. P total = P1 + P2 + P3 + ... Pressure of container = pressure of H2 + Pressure of N2 + Pressure of F2 = 3atm + 2atm + 5atm = 10atm Hope that helped. ;)</h3>

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3 years ago

A volume of 2.15 mL of Oxygen was collected in the lab at a temperature of 17 °C and 740.2 mmHg. After a day, the volume of the

Maurinko [17]

The new temperature (T₂) in the lab = 25.09 °C

<h3>Further explanation</h3>

Given

V₁=2.15 ml

T₁ = 17 + 273 = 290 K

P = 740.2 mmHg

V₂ = 2.21 ml

Required

The new temperature (T₂)

Solution

Charles's Law

<em>When the gas pressure is kept constant, the gas volume is proportional to the temperature </em>

$\tt \dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}$

Input the value :

T₂=(T₁.V₂)/V₁

T₂=(290 K x 2.21 ml)/2.15 ml

T₂=298.09 K = 25.09 °C

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3 years ago

How many grams are in 3.1 moles of H2SO4?

Mkey [24]

Answer:

98.07848 grams.

Explanation:

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3 years ago

To use patterns in observations to say what may happen next

PilotLPTM [1.2K]

In order to know what may happen next you need use patterns in the observation

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3 years ago