what is the molar mass of an unknown gas with a density of 6.25 g/l at 2.00 atm and 55.0 °c?

Maria throws two stones from the top edge of a building at a speed of 20 m/s, The time is mathematically given as

t=4.5 sec.

Generally, the equation for speed  is mathematically given as

V = u+at

Therefore

0 = 22-9.8xt.

t = 22 /9.8 sec

t = 2.24489.

The same time will be taken from max^m height to point O

The extra time is taken

t=4.49 sec.

t=4.5 sec.

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An aquarium 2 m long, 1 m wide, and 1 m deep is full of water. The work needed to pump half of the water out of the aquarium is  9800 joules (J).

To calculate the work needed to pump half of the water out of the aquarium, we need to determine the volume of water in the aquarium and then find the work required to move that volume against the force of gravity.

The volume of the aquarium can be calculated by multiplying its length, width, and depth:

Volume = Length × Width × Depth

Volume = 2 m × 1 m × 1 m

Volume = 2 m³

Since we want to pump out half of the water, the volume of water to be pumped out is:

Volume of Water = (1/2) × Volume

Volume of Water = (1/2) × 2 m³

Volume of Water = 1 m³

The next step is to calculate the mass of the water. We can use the density of water to convert the volume to mass:

Mass = Volume of Water × Density of Water

Mass = 1 m³ × 1000 kg/m³

Mass = 1000 kg

Now, we can calculate the work (W) using the formula:

Work = Force × Distance

The force (F) required to lift the water is equal to the weight of the water:

Force = Mass × Gravity

Force = 1000 kg × 9.8 m/s²

Force = 9800 N

The distance (D) over which the force is applied is the height of the aquarium, which is 1 m.

Work = Force × Distance

Work = 9800 N × 1 m

Work = 9800 N·m

Work = 9800 J

Therefore, the work needed to pump half of the water out of the aquarium is 9800 joules (J).

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Given,Dimensions of the Aquarium = 2 m × 1 m × 1 mVolume of the Aquarium = 2 × 1 × 1 = 2 m³Density of Water = 1000 kg/m³We have to find the work needed to pump half of the water out of the aquarium.Half of the Water in the Aquarium = 2/2 = 1 m³

Density of Water = Mass / VolumeorMass = Density × VolumeLet m be the mass of the water in the aquarium.Then,m = 1000 × 1= 1000 kgThe work needed to pump the half of the water out of the aquarium is explained as follows.The work done in pumping out a liquid from a container depends on the force needed to lift the liquid through a certain height.

The force required to pump out a liquid is given by,F = m × gwhere m is the mass of the liquid to be pumped and g is the acceleration due to gravity.To pump out half of the water from the aquarium, the mass of the water that is needed to be pumped is 1000 kg / 2 = 500 kg.So, the force required to pump out half of the water from the aquarium,F = m × gF = 500 × 9.8F = 4900 NTherefore, the work needed to pump half of the water out of the aquarium is the main answer.

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They all search for planets by measuring properties of a star rather than of the planets themselves. ... The size of the Doppler shift that we detect depends on the tilt of a planet's orbit.

Mixing horizontal and vertical polarizers on 3D glasses will cancel out the 3D effect.

Polarizers only allow light waves oscillating in one direction to pass through while blocking the ones oscillating perpendicular to that direction. In 3D movies, two images are projected on the screen, each polarized in a different direction, and 3D glasses use polarizers that match these directions to filter the images so that each eye sees only one of them. If you hold a pair of 3D glasses perpendicular to another pair, the lenses' polarizers will block each other, and both eyes will see both images simultaneously, resulting in a blurry mess that cancels out the 3D effect. It's essential to keep the polarizers aligned to enjoy the 3D movie properly.

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Answer:

The magnitude of acceleration is 2m/s² .

Explanation:

First, you have to find the velocity as it starts to travel 200m in 10s. The formula of velocity is V = Distance/Time, then you have to substitute the values into the formula :

\(v = d \div t\)

\(let \: d = 200 \\ let \: t = 10\)

\(v = 200 \div 10\)

\(v = 20m/s\)

Next, you have to substitute the values into the acceleration formula, a = (v-u)/t where v represents final velocity, u is initial velocity and t is time taken :

\(a = \frac{v - u}{t} \)

\(let \: v = 20 \\ let \: u = 0 \\ let \: t = 10\)

\(a = \frac{20 - 0}{10} \)

\(a = \frac{20}{10} \)

\(a = 2m/ {s}^{2} \)

According to Newton's second law of motion, the relationship between force (F), mass (m), and acceleration (a) is given by the equation F = ma.

If an identical force is applied to two objects, object one with a mass of 100 grams (0.1 kg) and object two with a mass of 200 grams (0.2 kg), we can compare their accelerations.
Let's assume the force applied is F.
For object one:
F = ma₁
For object two:
F = ma₂
Since the force applied (F) is the same for both objects, we can set the two equations equal to each other:
ma₁ = ma₂
Canceling out the mass (m) from both sides of the equation, we get:
a₁ = a₂
Therefore, the relationship between the accelerations of the two objects is that they are equal. If the force applied is identical, the resulting acceleration will be the same for objects with different masses, as long as no other forces are involved.

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The plane's horizontal and vertical velocity components are 33.65 m/s and 53.85 m/s respectively.

What is velocity ?

velocity is defined as rate of change of displacement d of the object with respect to rate of change in time t. In mathematics It is written as :

v = d/t

it should be noted that, velocity is nothing but speed in particular direction. That is velocity is vector quality having both magnitude and direction where as speed is just the magnitude of velocity.

It is given that :

A plane moves with a velocity v of 63.5 m/s at 32 degrees South of East with the horizontal.

Therefore, the planes horizontal velocity components will be :

v₁ = vsinθ

v₁ = 63.5 x sin 32⁰

v₁ = 33.65 m/s

the planes vertical velocity components will be :

v₂ = vsinθ

v₂ = 63.5 x cos 32⁰

v₂ = 53.85 m/s

Therefore, the plane's horizontal and vertical velocity components are 33.65 m/s and 53.85 m/s respectively.

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The force exerted on the electron has the magnitude of  \(8\times10^{-14} N\). The force on an electric charge q in an electric field E is given by the formula F = qE.

Here, the charge on the electron is \(q = 1.60\times 10^{-19} C\), and the electric field is \(E = 5\times10^5 N/C\).

the electron's Magnitude of force is given by :\(F = (1.60\times10^{-19} C)(5\times10^5 N/C) = 8\times10^{-14} N\)

This force is directed opposite to the direction of the electric field because the electron has a negative charge. Since all other forces acting on the electron are negligible in comparison to the electric field force, we can assume that the electron moves with a constant acceleration given by F = ma. The acceleration of the electron can be determined by using the formula a = F/m.

Substituting the values, we get

\(a = \frac{8\times10^{-14} N)}{(9.11\times10^{-31} kg)} = 8.78\times10^{16} m/s^2.\)

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A bullet (mass = m) is fired at speed V into a block of mass M(with M>m) which is hanging vertically from a light string of length L. The bullet stops in the block. If the recoiling block + bullet system reaches a height of 2/3L, then the initial speed of the bullet is given by M* (4gL/3)^(1/2)/m.

To solve this problem, we need to apply the principle of conservation of momentum and conservation of energy. Initially, the system has only kinetic energy due to the bullet's motion.

After the collision, the bullet stops, and the block+bullet system moves upward, gaining potential energy.

We can write the momentum conservation equation as mV = (M + m)u, where u is the final velocity of the block+bullet system. Using conservation of energy, we can equate the initial kinetic energy to the final potential energy, which is given by (M+m)gu(2/3L), where g is the acceleration due to gravity.

Substituting u from the momentum conservation equation, we get the final expression for the initial speed of the bullet as (4gL/3)^(1/2)/m.

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Identifying additional ports and connectors is important in ensuring that your devices are compatible and can communicate with each other. A connector is a device that connects two or more components together, while a port is a connection point that allows devices to connect to a computer or other devices.

To identify additional ports and connectors, you can start by looking at the specifications of your devices. The user manual or the manufacturer's website should have information on what types of ports and connectors are available. You can also physically inspect the devices to see what ports and connectors are present.
For example, a computer typically has ports such as USB, HDMI, Ethernet, and audio jacks. These ports allow you to connect various devices such as printers, monitors, and speakers. Other devices such as smartphones, cameras, and gaming consoles may have their own unique ports and connectors.
By identifying additional ports and connectors, you can expand the functionality of your devices and make them more versatile. It also allows you to connect your devices to a wider range of peripherals and accessories, making your computing experience more efficient and enjoyable.

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Answer:

6650km

Explanation:

Distance = (6.4 × 10³ + 250) km

= 6650 km

Energy is defined in science as the ability to move matter or change matter in some other way.

The critical angle of the Metamaterial of the Korean lattice made up of conducting rectangles is 1.14°.

The refractive index of the given Korean micromaterial formed of lattice of conducting rectangles is 38.6.

we know, the refractive index and the critical angle of the material are related to each other as,

C = sin⁻¹(1/n)

Where,

C is the critical angle,

n is the refractive index of the material.

Now, putting the values,

C = sin⁻¹(1/38.6)

C = sin⁻¹(0.02)

C = 1.14°

So, the critical angle of the the metamaterial of the Korean lattice is 1.1

4°.

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Answer:

This question appear incomplete

Explanation:

This question appear incomplete. However, the significance/functions of the "instruments" mentioned (in the completed question) can be predicted since these "instruments" generally have specialized function.

A thermometer is used to determine the temperature of a substance or an object. The electric heater uses electricity to produce heat (which can be utilized for different purposes). The power supply is used to supply electricity for instruments/appliances that may require electricity to function.

Complete Question:

The Statue of Liberty is made of copper that has turned green because it has undergone a change. What can be said about this change?

Group of answer choices.

A. The change is a physical change because the copper in the statue is still there.

B. The change is a physical change because a new chemical is formed on the outside of the statue.

C. The change is not a physical change because the color of the statue has changed.

D. The change is not a physical change because a new chemical is formed on the outside of the statue.

Answer:

D. The change is not a physical change because a new chemical is formed on the outside of the statue.

Explanation:

A physical change can be defined as a type of change that only affects the physical form of a chemical substance (matter) without having any effect on its chemical properties. Thus, a physical change would only affect the physical appearance and properties of a chemical substance (matter) but not its chemical properties.

This ultimately implies that, a physical change result in a change of matter from one form or phase (liquid, solid or gas) to another without a corresponding change in chemical composition.

Additionally, a physical change is a type of change that involves an increase or decrease in the volume of a physical object (object). Also, this change can be reversed to the original state under certain conditions.

Since the Statue of Liberty which is made of copper turned green, the change is not a physical change because a new chemical is formed on the outside of the statue.

Answer:

It orbits our sun is the correct answer

Sagittarius A* is 26,000 light-years away from earth. Hence, option (C) is correct.

Sagittarius A* (Sgr A*), a supermassive black hole at the center of the Milky Way Galaxy with a mass equal to four million Suns, is seen in the constellation of Sagittarius. It is a powerful radio source that is a part of the larger Sagittarius A complex.

One of Chandra's largest observing missions to date led to these new discoveries. In order to obtain the first-ever X-ray photos and energy fingerprints of the multi-million degree plasma swirling around Sgr A*, a black hole with around 4 million times the mass of the Sun, Chandra made observations over the course of nearly five weeks in 2012.

Sgr A* is one of the very few black holes in the cosmos where we can really observe the flow of stuff close by, and it is only 26,000 light years away from Earth.

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So, the impulse of the ball to the wall is -12 N. It have same meaning to 12 N in opposite direction with its initial movement.

Hi ! In this ocassion, I will help you to solve the question about impulses. Impulse also relate to momentum, where the amount of impulse will cause the difference (indicated in units of direction) velocity when an object move. Impulses that have opposite direction to the original direction will have a negative value.

Impulse is the result of a change in momentum, so it can be expressed in this formula :

\(\sf{I = \Delta p}\)

\(\boxed{\sf{\bold{I = m (v' - v_0)}}}\)

With the following condition:

\(\sf{I = m (v' - v_0)}\)

\(\sf{I = 0.15 (-30 - 50)}\)

\(\sf{I = 0.15 (-80)}\)

\(\boxed{\sf{I = -12 \: N.s}}\)

So, the impulse of the ball to the wall is -12 N. It have same meaning to 12 N in opposite direction with its initial movement.

Answer:

5 seconds

Explanation:

sound travels 1 km in roughly 3 secs so 1 mile in roughly 5 secs.

Answer:

The dust present in the clouds.

Explanation:

The complicated composition molecules that can be found in space are generally associated with clouds of dust. The significant amount of dust in these clouds provides protection not only for these molecules, but for any body that makes up or is associated with dust clouds.

It is exactly this dust that protects the molecules against the action of ultraviolet rays.

Answer:

the answer is the option C

Answer:

m = 9795.9 kg

Explanation:

v = 35 m/s

KE = 6,000,000 J

Plug those values into the following equation:

\(KE = \frac{1}{2} mv^{2}\)

6,000,000 J = (1/2)(35^2)m

---> m = 9795.9 kg

Answer:

500x

Explanation:

A microscope had an eyepiece magnification of 10x

The objective lens magnification is 50x

Therefore the total magnification can be calculated as follows

= 10 × 50

= 500x

Hence the total Magnificattion is 500x

Answer:

Hey, the answer is Zirconium-93

Explanation:

Im very positive about this question, so i hope I helped you ;p

Answer:

Zirconium-93

Explanation:

when we add up the 40 protons and 53 neutrons it gives 93 and a protons and neutron 93 gives a Zirconium-93

Thanks theres your answer

Answer:

A proton has a positive charge :)

A neutron has no charge because it is neutral :)

Have a great day!!

Please rate and mark brainliest!!

A proton is positively charged while a neutron has no charge at all.

Separately derived system generators shall have the neutral conductor sized not smaller than required to carry the maximum unbalanced current as determined by NEC Article 220.61.

Charged material experiences a force when it is exposed to an electromagnetic field due to the physical property of electric charge. You can have a positive or negative electric charge.

Electric current is defined as the charge per unit of time.

The mathematical relation between current and the electric charge

I =Q/T

Generators are basically motors that operate in reverse—they produce electricity when rotated, instead of rotating when supplied with electricity

The conductors that come from generators must be sized, and overload protection is required. But compared to similar considerations for motors, these considerations are much simpler.

Thus, The neutral conductor on separately derived system generators must be no smaller than necessary to carry the maximum unbalanced current as specified by NEC Article 220.61.

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Answer: pretty sure 14 pounds

Explanation:

answer:

Explanation:

the impulse-momentum theorem states that the change in momentum of an object equals the impulse applied to it. The impulse-momentum theorem is logically equivalent to Newton's second law of motion (the force law).

According to the impulse-momentum theorem, the amount of change in an object's momentum equal to the amount of force applied to the object over a certain amount of time. So, option B.

According to the impulse-momentum theorem, the impulse that is applied to an item is equal to the change in momentum.

It shows how an object's change in momentum depends on both the strength and duration of the applied forces.

Impulse is defined as the force acting for a short interval of time.

Impulse = F x t

The momentum of the object,

P = mv

So, the rate of change of momentum,

dP/dt = d(mv)/dt

dP/dt = mdv/t

dP/dt = ma = Force

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The wavelengths of solar energy that are absorbed by plants in photosynthesis are 700 nm to 400 nm.

Solar energy is the most promising, safest, cleanest, and most reliable source of energy.

It is obtained directly from the sun and is converted into thermal energy. Solar energy plays a crucial role in the photosynthesis process.

Through photosynthesis, plants transform solar energy into a form of chemical energy that can be used by all living organisms.

During photosynthesis, thermal energy is used to produce glucose and oxygen.

To sum up, visible light is a form of sunlight that is used for photosynthesis having wavelengths between 700 nm to 400 nm.

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