Barometric pressure has been dropping all day. what weather conditions will most likely occur? calm weather stormy weather hot weather sunny weather

The volume of the gas at [tex]500^{\circ} \text{C}[/tex] is [tex]\fbox{\begin\ 5.576\,{\text{L}}\\\end{minispace}}[/tex].

Further Explanation:

Consider the pressure of the gas to be constant.  

The change in the volume of the gas when the temperature of the gas is varied by keeping the pressure of the gas at a constant value is defined by the Charles' Law.

Concept:

According to the Charles law, the volume of the gas is directly proportional to the temperature of the gas at constant pressure.

The Charles' law can be stated as:

[tex]\fbox{\begin\\V\propto T\\\end{minispace}}[/tex]

The above expression can we written as.

[tex]\dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}[/tex]

Convert the temperature of the gas into kelvin.

[tex]T=273+T^\circ\text{C}}}[/tex]

Here, T is the temperature in kelvin and [tex]T^\circ\text{C}}}[/tex] is the temperature in centigrade.  

The initial temperature of the gas is [tex]50^\circ\text{C}[/tex]. The temperature of the gas in kelvin is.  

[tex]\begin{aligned}{T_1}&=273+50\\&=323\,{\text{K}}\\\end{aligned}[/tex]

The final temperature of the gas is [tex]500^\circ\text{C}[/tex] . The temperature in kelvin is.  

[tex]\begin{aligned}{T_2}&=273+500\\&=773\,{\text{K}}\\\end{aligned}[/tex]

Substitute the values of temperature and volume in the expression of the Charles' Law.  

[tex]\begin{aligned}{V_2}&=\frac{{{T_2}}}{{{T_1}}}{V_1}\\&=\frac{{773\,{\text{K}}}}{{323\,{\text{K}}}}\left({2.33\,{\text{L}}}\right)\\&=5.576\,{\text{L}}\\\end{aligned}[/tex]

Thus, the volume of the gas at [tex]500^\circ\text{C}}[/tex] will be [tex]\fbox{\begin\ 5.576\,{\text{L}}\\\end{minispace}}[/tex].

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Answer Details:  

Grade: High school  

Subject: Physics  

Chapter: Gas law  

Keywords:  

Charles law, temperature, volume, initial, final, kelvin, centigrade, 50 C, 500 degree, 500 C, 50 degree, 2,33 L, gas expand, sample, heated.

To solve this, we apply Charles's law, which relates the volume and the temperature of a gas when the pressure is held constant. Temperature values need to be converted to Kelvin, and we solve the equation V1/T1 = V2/T2 to find out the volume of the gas when heated.

To find out to what volume the sample of gas will expand when heated from 50.0°c and 2.33 l to 500.0°c, we can apply Charles's law. Charles's law states that the volume and temperature of a gas have a direct relationship when pressure is held constant. Thus, when the temperature goes up, so will the volume, and vice versa.

In this problem, we start by converting temperatures from Celsius to Kelvin, because Charles's law uses the absolute temperature scale (Kelvin). So, 50°C would convert to 323.15K, and 500°C would convert to 773.15K.

Then, we set up the equation using Charles's law V1/T1 = V2/T2 where V1 = 2.33L, T1 = 323.15K, T2 = 773.15K and V2 is what we want to find. Solving this equation with the given parameters will give us the unknown gas volume V2 at 500°C.

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Answer: The velocity of the wave is 20m/s

Explanation: The velocity of a wave can be obtained by the equation:

Velocity = wavelenght*frequency.

or v = λ*f

In this case, we know that: λ = 100 meters, f = 0.2Hz (where Hz means 1/s)

then, we have that the velocity of the wave is:

v = 100m*(0.2*1/s) = (100*0.2)m/s = 20m/s

The speed of a wave is mathematically given as

[tex]\lambda= 20m/s[/tex]

Question Parameters:

the speed of a wave with a frequency of 0.2 Hz

and a wavelength of 100 meters

Generally, the equation for the  Wave speed (m/s)  is mathematically given as

[tex]\lambda= frequency (Hz) x wave length (m) \\\\\lambda=0.2 x 100[/tex]

\lambda= 20m/s

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Frequency of a microwave is 6 × 10⁹ Hz

Given that;

Wavelength of microwave = 5 cm = 0.05 m

Find:

Frequency of a microwave

Computation:

Velocity of microwave = 3 × 10⁸ m/s

Velocity = Frequency × Wavelength

3 × 10⁸ = Frequency of a microwave × 0.05

Frequency of a microwave = 6 × 10⁹ Hz

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Both Coulomb's law and Newton's law are inverse laws. In the case of Coulomb's law, the force is inversely proportional to the square of the distance between point charges. In the case of Newton's gravitational law, the force is inversely proportional to the square of the distance between masses.

Coulomb’s law can be described as the force of attraction between two charged bodies or point charges being the multiplication of their charges and is inversely proportional to the square of the distance between them. This force exerts along the line joining of the two-point charges.

The electrostatic force between two point charges can be expressed as:

[tex]{\displaystyle F =k \frac{q_1q_2}{r^2}[/tex]

where k is constant proportionality = 8.99 × 10⁹ N.m²/C².

Newton’s Law can be described as every particle attracting every other particle in the universe with force directly proportional to the product of the masses and inversely proportional to the square of the distance by which they are separated.

The magnitude of gravitational force is given by the following expression:

[tex]{\displaystyle F =G \frac{m_1m_2}{r^2}[/tex]    where G is the universal gravitational constant.

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3135 J of energy is needed to change the temperature of 50g of water by [tex]\rm 15^\circ C[/tex].

Given :

Mass of water is 50g

Change in temperature = [tex]\rm 15^\circ C[/tex]

Solution :

We know that energy needed to increase the temperature of a substance is,

[tex]\rm Q = mC_s \Delta T[/tex]   ---- (1)

where,

m is the mass of the substance,

[tex]\rm C_s[/tex] is the specific heat capacity of the substance,

[tex]\rm C_s = 4.18 \; J/g ^\circ C[/tex]   ---   (specific heat of water)

and [tex]\rm \Delta T[/tex] is the change in temperature.

Now put the values of [tex]\rm m,\;\Delta T\; and \; C_s[/tex]  in equation (1) we get,

[tex]\rm Q = 50\times 4.18 \times 15[/tex]

[tex]\rm Q = 3135\;J[/tex]

3135 J of energy is needed to change the temperature of 50g of water by [tex]\rm 15^\circ C[/tex].

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The efficiency of the light bulb is 75%.

Calculating The Efficiency Of A Light Bulb.

To calculate the efficiency of the light bulb, you can use the following formula:

Efficiency (%) = (Useful Energy Output / Total Energy Input) * 100

In this case:

- Useful Energy Output is the light energy produced, which is 450 J.

- Total Energy Input is the electrical energy used, which is 600 J.

Efficiency (%) = (450 J / 600 J) * 100 = (3/4) * 100 = 75%

So the efficiency of the light bulb is 75%. This means that 75% of the electrical energy input is converted into useful light energy, while 25% is wasted as other forms of energy, such as heat.

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Answer:

true

Explanation:

Answer:

Bulk modulus, [tex]B=2.40\times 10^9\ N/m^2[/tex]

Explanation:

Given that,

The velocity of sound in sea water, v = 1533 m/s

Density of water, [tex]\rho=1.025\times 10^3\ kg/m^3[/tex]

We need to find the bulk modulus. The speed of sound also depends on the bulk modulus of the material. The relationship is given by :

[tex]v=\sqrt{\dfrac{B}{\rho}}[/tex]

[tex]B=v^2\times \rho[/tex]

[tex]B=(1533\ m/s)^2\times 1.025\times 10^3\ kg/m^3[/tex]

[tex]B=2.40\times 10^9\ N/m^2[/tex]

So, the bulk modulus of the sea water is [tex]2.40\times 10^9\ N/m^2[/tex]. Hence, this is the required solution.

The Answer is

C. Resonance

LOL EZ CLAP

Given a half-life of 20 minutes for element Z, a 200g sample would undergo eight cycles of reduction by half over 160 minutes, leaving 0.78g of element Z remaining. The element doesn't disappear but transforms into 'daughter elements'.

The concept being discussed here is known as the half-life, which is the time it takes for half the atoms in a sample to decay. In this case, element Z has a half-life of 20 minutes. Given that the half-life is the time it takes for half of a substance to decay, we would use this information to determine the remaining quantity of element Z after 160 minutes.

A 200g sample of Element Z would undergo eight half-life cycles in 160 minutes (20 minutes per cycle). Following the pattern of half-life decay, after each cycle the remaining amount would be 100g, 50g, 25g, 12.5g, 6.25g, 3.125g, 1.56g, and finally 0.78g. So, after 160 minutes, there would be 0.78g of element Z remaining.

Please note that the substance doesn't completely disappear but transforms into decay products or, using the metaphor, 'daughter elements' while element Z is the 'parent' element.

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Final answer:

Q represents the amount of heat energy required for phase change in the context of latent heat equations. It is calculated using mass and the substance-specific latent heat constants for fusion and vaporization.

Explanation:

In the context of the latent heat formulas, Q represents the heat required to change the phase of a substance. Specifically, for the latent heat of fusion, Q = mLf where Lf is the latent heat of fusion, the constant that denotes the amount of heat energy required to change 1 kilogram of the substance from a solid to a liquid without changing its temperature. For the latent heat of vaporization, Q = mLv where Lv is the latent heat of vaporization, indicating the amount of heat energy needed to change 1 kilogram of the substance from a liquid to a gas. The values of Lf and Lv are determined experimentally for different materials. For instance, for water, Lf is 334 kJ/kg, thus Q for turning 1 kilogram of ice at 0°C into water is Q = 3.34 × 105 J. The latent heat of vaporization for water is Lv = 2256 kJ/kg, meaning the energy required to vaporize mass m of water is Qv = mLv.

it would be D   since it would react the opposite of the litmus paper

Answer:

They transmit directly between the brain and the sense organs.

Explanation:

Cranial nerves – Nerves that emerge directly from the brain and transmit information directly between the brain and various organs and muscles

Answer:

This would increase the formation of the NH3 buffer.

Explanation:

This would increase the formation of the NH3 buffer. Since Pepsi has acid in it, it would cause the kidneys to reabsorb bicarbonate from the urine leading to an increase in the formation of the NH3 buffer.

If the US government does not allow the manufacturer to export their products to Honduras, the manufacturer will lose the non-refundable application fee of $2,700 and because the U.S. government limits trade with Honduras, the manufacturer is required to obtain an export license from the Department of Commerce, which can result to a shortage of demand for US products.

In addition, the total value of product exports must not less than $10800 for the duration of the license so that the application and license fee will be worthwhile. 

The imposition of an export license fee and a nonrefundable application fee can increase costs, reduce profit margins, and impact demand for U.S. manufacturers selling to Honduras.

Obtaining an export license for selling computer equipment to Honduras involves a fee of $8,100, plus a nonrefundable application fee of $2,700. These fees could have several potential effects on the U.S. manufacturer:

For example, if the equipment normally sells for $100,000, adding $10,800 in fees could push the price to $110,800, potentially reducing its attractiveness compared to local or other international sellers.