A container with volume 1.54 L is initially evacuated. Then it is filled with 0.221 g of N2. Assume that the pressure of the gas is low enough for the gas to obey the ideal-gas law to a high degree of accuracy.
If the root-mean-square speed of the gas molecules is 182 m/s , what is the pressure of the gas?

Explanation:

We know,

1KN = 1000N

Then, Force(F) = 5*1000N

=5000N

Here,

Power (P)=Work(W)/Time(T)

=Force * distance/ Time (W = F*s)

= 5000*15/75

=1000

So, The power of body or object is 1000Watt.

I hope this will be helpful for you.

Answer:

74.54g

Explanation:

First, let’s calculate the heat lost by the tea when it cools down from 33.1°C to 26.3°C. We can use the formula Q = mcΔT, where Q is the heat lost, m is the mass of the tea, c is the specific heat capacity of water, and ΔT is the change in temperature.

In the context of the problem,

So, the heat lost by the tea is: Q = (185g) * (4186 J/kg·°C) * (6.8°C) = 5345.68 J

This heat is gained by the ice, causing it to melt and warm up to 0°C. The heat required to melt ice is given by Q = mL, where m is the mass of ice melted and L is the latent heat of fusion of water.

The latent heat of fusion of water is 334 kJ/kg. So, we can calculate the mass of ice melted as: m = Q / L = (5345.68 J) / (334 kJ/kg) = 0.016 kg or 16g

However, not all of the ice will melt. Some of it will remain as ice and some will become water at 0°C.

Let’s say that x grams of ice melts completely and becomes water at 0°C. The remaining (90.3 - x) grams of ice will stay as ice.

The heat required to melt x grams of ice is: Q1 = x * L

The heat required to warm up x grams of water from 0°C to 26.3°C is: Q2 = x * c * (26.3 - 0)

The total heat gained by the ice and water is: Q = Q1 + Q2

Substituting the values we get: 5345.68 J = x * L + x * c * (26.3 - 0)

Solving for x, we get: x = (5345.68 J) / (L + c * (26.3 - 0)) ≈ 15.76g

Therefore, out of the initial 90.3g of ice, only approximately 15.76g melts completely and becomes water at 0°C.

The remaining mass of ice in the jar is: (90.3 - 15.76)g ≈ 74.54g.

Answer:

Explanation:

circumference = diameter * \(\pi\)

circumference = 65 * \(\pi\)

circumference = 204.2035225m

350 km/h = 97.222222 m/s

0.4761 revolutions per second

A cell of inter resistance of 0.5 ohm is connected to coil of resistance 4 ohm and 8 ohm joined in parallel.If there is current of 2A in 8 ohm, the electromotive force (emf) of the cell is approximately 14.5 volts.

To find the emf of the cell, we can apply Ohm's Law and Kirchhoff's laws to analyze the circuit.

Given:

Resistance of the coil, R1 = 4 ohm

Resistance of the other resistor, R2 = 8 ohm

Current passing through the 8-ohm resistor, I = 2A

First, let's analyze the parallel combination of the 4-ohm and 8-ohm resistors.

The total resistance of two resistors in parallel can be calculated using the formula:

1/Rp = 1/R1 + 1/R2

Substituting the given values, we have:

1/Rp = 1/4 + 1/8

1/Rp = 2/8 + 1/8

1/Rp = 3/8

Rp = 8/3 ohm

Now, let's consider the total resistance in the circuit, which includes the internal resistance of the cell (0.5 ohm) and the parallel combination of the resistors (8/3 ohm).

R_total = R_internal + Rp

R_total = 0.5 + 8/3

R_total = 1.833 ohm

Now, we can find the emf of the cell using Ohm's Law:

emf = I * R_total

emf = 2 * 1.833

emf ≈ 3.667 volts

Therefore, the emf of the cell is approximately 3.667 volts.

However, it is worth noting that the given current of 2A passing through the 8-ohm resistor does not affect the emf calculation since the emf of the cell is independent of the current in the circuit.

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Biomolecules are fundamental for life. They required both energy supply and building structures.

Biomolecules are organic molecules that fundamental for life and must be ingested from the regular diet.

Biomolecules include proteins (e.g., meal proteins), lipids (fats) and also carbohydrates (e.g., glucose).

Biomolecules required both energy supply (e.g., glucose) and building structures (e.g., amino acids in proteins).

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Answer:

Distance: 21km

Displacement: ~16.76km

Explanation:

To determine the effort needed to lift a load of 200N, given a velocity ratio of 5 and an efficiency of 80%, we can use the formula:

Efficiency = (Output Work / Input Work) * 100

Efficiency can also be calculated as the ratio of the output force to the input force. In this case, the output force is the load being lifted (200N), and the input force is the effort required.

Given that the velocity ratio is 5, it means that for every 5 units of distance the effort moves, the load moves 1 unit of distance. This implies that the effort is exerted over a greater distance than the load.

Let's denote the effort force as "E" and the distance moved by the effort as "dE." Similarly, the load force is "L," and the distance moved by the load is "dL."

Using the velocity ratio, we have the following relationship:

dE / dL = 5

Now, we can calculate the input work (Wi) and the output work (Wo):

Input Work (Wi) = Effort (E) * Distance moved by the effort (dE)

Output Work (Wo) = Load (L) * Distance moved by the load (dL)

Given that the efficiency is 80%, we can rewrite the formula for efficiency as:

0.80 = (Wo / Wi) * 100

Now, let's solve for the effort (E) using the given values:

Load (L) = 200N

Efficiency = 0.80

Velocity Ratio = 5

First, calculate the output work (Wo):

Wo = Load (L) * Distance moved by the load (dL)

Since the velocity ratio is 5, the distance moved by the load (dL) will be 1/5 of the distance moved by the effort (dE):

dL = (1/5) * dE

Wo = L * (1/5) * dE

Wo = 200N * (1/5) * dE

Wo = 40N * dE

Next, calculate the input work (Wi):

Wi = Effort (E) * Distance moved by the effort (dE)

Wi = E * dE

Now, substitute the values into the efficiency formula:

0.80 = (Wo / Wi) * 100

0.80 = (40N * dE) / (E * dE) * 100

0.80 = 40 / E * 100

0.80 * E = 40

E = 40 / 0.80

E = 50N

Therefore, the effort needed to lift a load of 200N with a velocity ratio of 5 and an efficiency of 80% is 50N.

Answer:

Canva. Although Canva's free storyboard app for iOS and Android is targeted more at video production, it still provides animators and UX designers everything they need.

Explanation:

The requirement of the prompt is for 500 British Thermal Units /Calories (Cal) to be converted to Gram Calories. Hence, 500 BTU (cal) = 126,082cm²

A British thermal unit is a heat unit defined as the amount of heat needed to raise the temperature of one pound of water by one degree Fahrenheit. It is also one of the customary units used in the United States.

To covert 500 BTU, one must note that according to established scientific metrics.:

1 BTU = 252.164 Gram (Cal).

Hence,

500 BTU = 252.164  x 500

= 126,082 cm²

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Tension in the left cable is 4395.9 N.

Tension is defined as a pulling force that acts along the length of a flexible medium like rope or cables.

Here,

The total mass of the riders is given, m = 330 kg

Let the tension in the left cable be T₁ and that in the right cable be T₂.

From the figure,

T₁ cos 15 = T₂ cos 26

T₁ = T₂ cos 26/cos 15

Also,

T₁ sin15 + T₂ sin 26 = mg

Substituting values,

(T₂ cos 26/cos 15) sin 15 + T₂ sin 26 = 330x 9.8

0.241 T₂ + 0.438 T₂ = 3234

0.679 T₂ = 3234

T₂ = 4762.8 N

Therefore, Tension in the left cable, T₁ = 0.930x 4762.8

         T₁ = 4395.9 N

Hence, The tension in the left cable is 4395.9 N

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Your question was incomplete. Attaching the image here.

(a) The galaxy moves with a velocity of 0.8 c away from us.

(b) When the galaxy moves towards us we observed that the wavelength of the line is 40.67 nm.

We know that,

                        The relativistic Doppler effect when the galaxy is moving away from us

          In this case, when the source moves away from the observer its frequency (\(f\)) is lower than the emitted frequency (\(f_{0}\)) and the preceding wavelength (\(\lambda\)) is higher than the emitted wavelength (\(\lambda_{0}\)).

                                 \(f=f_{0} \sqrt{\frac{1-\frac{u}{c} }{1+\frac{u}{c} } }\)

                          \((\frac{\lambda_{0} }{\lambda})^{2} = \sqrt{\frac{c-u}{c+u} }\)

Given that

                      \(\lambda_{0} =122 nm\lambda=366nm\)

So

                    \((\frac{122}{366} )^{2} =\frac{c-u}{c+u} \frac{1}{9} = 8cu=0.8c\)

Where c is the velocity of light it is equal to \(3*10^{8} m/s\).

So when the galaxy moves towards us we observed that the wavelength of the line is 40.67nm.

(b) When the galaxy moves towards us its wavelength is shorter than the emitted wavelength.

The expression of the wavelength in this case is given by

                    \(\frac{\lambda _{0} }{\lambda } =\sqrt{\frac{c-u}{c+u} }\)

                         = 40.67 nm

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Answer:

A.

Explanation:

During the fall the day gets shorter hence less sunlight this results to leaves stopping their food making process. The chlorophyll breaks down, the green color disappears and the yellow to orange color becomes visible

Answer:

Initially...

Object A is at rest(v=0)

With Mass =8kg

Object B moving at 10ms- and Mass of 16kg.

Now After collision(Elastic)... B Came to rest...Meaning its final vel =0

But its mass remains the same

What velocity would A be moving with?

From Conversation of Momentum

M'U' + M"U"= M'V' + M"V"

8(0) + (16)(10) = 8V' + 16(0)

0 + 160 = 8V' + 0

8V'= 160

V'= 160/8

V'=20ms-¹.

A would be Moving at 20ms-¹ after collision.

Answer:Rubidium or answer 1

Explanation:took quiz

Answer: Rubidium (Rb) is more reactive than strontium (Sr) because strontium atoms must lose more electrons.

Explanation: Look at the elements they are organized on the periodic table based on their properties. (A) correctly predicts and explains the chemical reactivity of two metals.

Answer:b

Explanation:

Guess

Answer:

21 m/s

Explanation:

If

m1 = mass of 1875 kg car

u1 initial speed of 187 kg car = 23.0 m/s

m2 = mass of 1025 kg car

u2= initial speed of 1025 kg car = 17.0 m/s

Since they stuck together, they have a common final velocity v

From principle of conservation of linear momentum

m1u1 + m2u2 = (m1 + m2) v

v= m1u1 + m2u2/(m1 + m2)

v= 1875 × 23 + 1025× 17/(1875 + 1025)

v= 43125 + 17425/2900

v= 21 m/s

The final velocity of both cars is 20.87 m/s.

Given that the two cars have a mass of 1875 kg and 1025 kg respectively and the velocity of both the cars is 23.0 m/s and 17.0 m/s.

The common velocity of both cars is given below.

\(v (m_1+ m_2) = m_1u_1 + m_2u_2\)

Where v is the final velocity of both cars, m1 and m2 are the mass of both cars respectively. u1 and u2 are the initial velocities of both cars.

Substituting the values, we get the final velocity.

\(v ( 1875 + 1025) = 1875 \times 23 + 1025 \times 17\)

\(v = 20.87 \;\rm m/s\)

Hence we can conclude that the final velocity of both the cars is 20.87 m/s.

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Answer:

120 m

General Formulas and Concepts:

Kinematics

Explanation:

Step 1: Define

Identify

[Given] v = 30 m/s

[Given] t = 4 s

Step 2: Solve

Answer:

\(\boxed {\boxed {\sf 120 \ meters}}\)

Explanation:

Distance, or how far an object travels, is the product of velocity and time.

\(d= v*t\)

The velocity is 30 meters per second and the time is 4 seconds.

Substitute the values into the formula.

\(d= 30 \ m/s * 4 \ s\)

Multiply. The units of seconds (s) cancel.

\(d= 30 \ m * 4\)

\(d=120 \ m\)

The car travels a distance of 120 meters in 4 seconds at a velocity of 30 meters per second.

Answer:

Explained below

Explanation:

In skying down a hill, usually the skiers start at an elevated position and this means that they possess a large quantity of potential energy since they are in vertical position.

Now, as the skiers start to descend down the hill, they will lose potential energy while they gain kinetic energy since they are in motion. This is because there is reduction in height which results in a loss of potential energy and there is an increase in their speed which results in an increase in kinetic energy.

Now, immediately the skiers reaches the bottom of the hill, it means they are now at zero level height which means potential energy is now zero and it implies they have completely depleted the potential they had at the beginning at the top of the hill.

In contrast, at this zero level height, their speed and kinetic energy would have reached a maximum and this kinetic energy state will be maintained until they encounter a section of unpacked snow where they have to skid to a stop under force of friction. This friction force will carry out work on the skiers which will make their total mechanical energy to decrease. This means that as the force of friction keeps acting over an increasing distance, the quantity of work will therefore increase while the mechanical energy of the skiers will gradually be dissipated.

Eventually, the skiers will run out of energy and comes to a rest position and therefore they wouldn't be able to go as high as they first were before pushing off from the gate.

Answer: The estimated mass of the Milky Way galaxy is approximately 1.8 x 10^42 kg.

Explanation:

We can use the orbital velocity of the Sun around the galactic center, the distance from the Sun to the galactic center, and the laws of gravity to estimate the mass of the Milky Way galaxy.

The Sun orbits the galactic center at a velocity of approximately 220 km/s or 486,000 miles per hour. The distance from the Sun to the galactic center is approximately 27,000 light-years, or 1.6 x 10^17 miles.

We can use Kepler's Third Law, which relates an object's orbital period and distance to the mass of the central body, to calculate the galaxy's mass. This law can be written as:

\(T^2 = \frac{4\pi ^2}{GM} r^3\)

where T is the orbital period (230 million years),

G is the gravitational constant,

M is the mass of the galaxy,

and r is the distance from the Sun to the galactic center.

Solving for M, we get:

\(M = \frac{(\frac{4\pi ^2}{G})r^3}{T^2}\)

Plugging in the values, we get:

\(M = \frac{(4\pi ^2 / 6.6743 x 10^-11 m^3/kg/s^2) (1.6 x 10^17 miles)^3}{(230 million years)^2}\)

Converting the units, we get:

M = 1.8 x 10^42 kg

Therefore, the estimated mass of the Milky Way galaxy is approximately 1.8 x 10^42 kg.

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The appliance that is being examined here is the television

Television uses energy to power its electronic components, including the display screen, sound system, and various electronic circuits that control and process the incoming signals. The amount of energy a television uses can vary depending on the type of TV, size, display technology, and usage patterns.

For example, older CRT (cathode ray tube) TVs use more energy than modern LED (light-emitting diode) TVs. Energy is consumed when the TV is turned on, and the amount of energy used can increase when the TV is displaying brighter images or using built-in features like speakers or smart TV functions. Additionally, leaving a TV on standby mode can still consume some energy.

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mvh=1. 654106. 6210=41014m is the de Broglie wavelength of a proton whose kinetic energy is equal to that of the proton.

An electron has an energy of 100,000 eV (100 keV) at a potential difference of 100,000 V (100 kV), and so on. The energy gained by an ion with a double positive charge when it is accelerated through 100 V is 200 eV.

De Broglie wavelength is the length of a particle with kinetic energy E. The wavelength changes to /2 when energy E is added to it.

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The intensity of the circuit is 2 amps (option c).  (B) V =12 volts, R= 6 ohms.

To determine the intensity of the circuit, we can use Ohm's law, which states that the current (I) flowing through a circuit is equal to the voltage (V) divided by the resistance (R).

Given:

Voltage (E) = 12 volts

Resistance (R) = 6 ohms

Applying Ohm's law, we can calculate the intensity (I) using the formula I = V/R:

I = 12 volts / 6 ohms

I = 2 amps

In electrical circuits, intensity refers to the current flowing through the circuit. In this case, with a voltage of 12 volts and a resistance of 6 ohms, the circuit has an intensity of 2 amps, meaning that 2 amperes of current flow through the circuit. (option c).

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Answer:

1st

Explanation:

Answer:

Explanation:

the rilation shhip betveen boats annd volummes are ver expennsive

The buoyancy of a boat and the density of the materials used in its construction have an impact on the connection between its volume and the amount of mass it can support before sinking.

Thus, The buoyancy principle asserts that the upward force a fluid (in this case, water) exerts on a submerged or floating item is equal to the weight of the fluid displaced by the object, which is why a boat floats in water.

A boat moves as much water as its own volume while it is submerged in water.

A boat will float if its total weight, including its passengers and cargo, is less than the weight of the water it moves.

Thus, The buoyancy of a boat and the density of the materials used in its construction have an impact on the connection between its volume and the amount of mass it can support before sinking.

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Answer:

what do the lines look like

The young's modulus in a cantilever will be 3.92 x 10¹⁰ N/m².

Young's modulus (E) is a material property that indicates how easily it can stretch and deform and is defined as the ratio of tensile stress () to tensile strain (). Where stress denotes the amount of force applied per unit area ( = F/A) and strain denotes the extension per unit length

Given that the length is 1m which is suspended by a load of 150g. The depression is found to be 4cm. The thickness of the beam is 5mm and the breath is 3cm.

The young's modulus will be calculated by the formula below,

Y = (4gl³) / (bd³) x ( M / y )

Y = ( 4 x 9.81 x 1³ x 0.150 ) / ( 0.03 x 0.005³ x 0.04 )

Y = 3.92 x 10¹⁰ N/m².

Therefore, young's modulus will be 3.92 x 10¹⁰ N/m².

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Answer:

this is my old profile,i just need my back

Circular disc's moment of inertia around axis passing through mass and parallel to disc Icm=MR22

The phrase "moment of inertia" in physics refers to the precise calculation of a body's inertia with respect to rotation, or the resistance a body exhibits when a torque is applied to alter its rate of rotation around an axis (turning force).

It is a broad (additive) property: the moment of inertia for a point mass is equal to the mass squared by the perpendicular distance from the axis of rotation. Because it resists rotational motion, the moment of inertia is referred to as such and not as a moment of force.

Moment of inertia is the propensity of an object to continue rotating at a constant speed or in a condition of rest. More torque is needed to shift this state the higher the moment of inertia.

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