is the proton's speed v2 at point 2 larger than, smaller than, or equal to v3 ? explain.

Size exclusion chromatography is the method by which scientists determine the molecular size (not the weight), of a particular substance.

Size-exclusion chromatography (SEC), also known as molecular sieve chromatography, is a chromatographic method in which molecules in solution are separated by their size, and in some cases molecular weight. It is usually applied to large molecules or macromolecular complexes such as proteins and industrial polymers.

Typically, when an aqueous solution is used to transport the sample through the column, the technique is known as gel-filtration chromatography, versus the name gel permeation chromatography, which is used when an organic solvent is used as a mobile phase. The chromatography column is packed with fine, porous beads which are commonly composed of dextran, agarose, or polyacrylamide polymers. The pore sizes of these beads are used to estimate the dimensions of macromolecules.

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27m./s speed do a bicycle and its rider, with a combined mass of 120 kg , have the same momentum as a 1800 kg car traveling at 5.4 m/s.

Speed can be defined as the distance travelled by the object per unit time. Momentum can be defined as the product of the mass and the speed of the object.

The equation for the momentum is     p = mv

Here, m is the mass of the object and v is the speed of the object. The equation for the impulse is,                 I = mΔ v

Here, m is the mass and is the change in momentum. The equation for the change in speed is                      

Here,   ΔV = \(V_{f} -V_{i}\)

is the initial speed \(v_{i}\)

is the final speed.\(v_{f}\)

Step: 1

The equation for the momentum of the bike and rider is, P (B+R)= M \((B+R)^{V}\)…… (1)

Here, M (B+R) is the mass of the bike and rider, and v is the speed of the bike and rider.

The equation for the momentum of the car is \(P_{car} = m_{car} V_{car}\)…… (2)

Here,

\(m_{car }\)is the mass of the car and

\(V_{car}\)is the speed of the car.

According to the question, the momentum of the bike and rider is the same as that of the momentum of the car, that is,

Substitute the equations (1) and (2) in above equation.

\(M_({B+R^{v} )}\)= \(M_{car}V_{car}\)

Rearrange the above equation for v.  v = \(M_{car}V_{car}\)/\(M_({B+R^{} )}\)

Substitute  1800 kg for\(M_{car}\) , and for 5.4m/s in above equation.

v = ( \(\frac{(1800) (5.4)}{120}\) = 27m./s

Here, the momentum of the bike and rider is depending on the combined mass of the bike and rider and the speed of the bike and raider.

Measurement is the most important concept in science. There are many measurable quantities that are measured in basic or fundamental physical  units. Speed ​​is one such measurable quantity that measures the ratio of the distance travelled by an object to the time it takes to travel. Acceleration is defined as the rate of change of velocity with respect to time. Acceleration is a vector quantity because it has both magnitude and direction. It is also the second derivative of position with respect to time or  the first derivative of velocity with respect to time.

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The new volume of the cylinder after the gas is compressed is 7.03 cubic inches.

Measure atmospheric pressure.

The pressure the atmosphere is exerting at a certain location is known as atmospheric pressure. Normal measurement is done at 14.7 psi, or sea level.

Atmospheric pressure = 14.7 psi

Figure out the gauge pressure.

Gauge pressure = 50 lb/in2

The absolute pressure should be calculated.

Absolute pressure = 64.7 psi

Determine the cylinder's new volume.

New volume = (Absolute pressure - Atmospheric pressure) / Gauge pressure

New volume = (64.7 - 14.7) / 50

New volume = 7.03 cubic inches

Hence, the cylinder's new volume is 7.03 cubic inches.

Complete Question:

What is the volume of the cylinder after the gas is compressed if the gauge pressure of the pneumatic cylinder reads 50lb/in^2 and the absolute pressure is 64.7psi before and after?

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Answer:

Explanation:

The momentum of an object can be found by using the formula

From the question

mass = 200 kg

velocity / speed = 8m/s

We have

momentum = 200 × 8

We have the final answer as

Hope this helps you

Answer:

200 seconds

Explanation:

Time = 1000/5

= 200s

The resolution of the images produced by the visible light telescope will be higher than that of the radio telescope, due to the difference in wavelength.

When there were two telescopes with the same diameter, but one is a visible light telescope and the other a radio telescope, the resolution of the images from each telescope would be different. The wavelength of visible light is several hundred nanometers (1 nanometer = 10−9 meters), while the wavelength of radio waves is much longer, typically on the order of meters or centimeters.

Hence, we can compare the resolution of visible light and radio telescopes. This means that the visible light telescope will be able to resolve more details, since it can detect smaller details due to its smaller wavelength.

Radio telescopes have a lower resolution compared to visible light telescopes because of their longer wavelength. The resolution of an optical telescope is limited by the size of its aperture. The smaller the aperture, the more diffracted the image. As the aperture size grows, the resolving power of the instrument improves.

The same is not true of radio telescopes because their wavelength is so much longer than visible light. The aperture size of a radio telescope would have to be several kilometers in diameter to achieve the same resolution as a visible light telescope of the same size. This is why radio telescopes are usually much larger than optical telescopes.

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The final speeds of the spheres are 3.47 m/s and 3.08 m/s.

We can use conservation of momentum to solve this problem since there are no external forces acting on the system.

The initial momentum of the system is:

p_initial = m₁ * v₁ + m₂ * v₂

where m₁ and m₂ are the masses of the spheres, and v₁ and v₂ are their initial velocities (4.00 m/s and 0 m/s, respectively).

After the collision, the momentum of the system is:

p_final = m₁ * v1' + m₂ * v₂'

where v₁' and v₂' are the final velocities of the spheres. We also know that the angle between the first sphere's final path and its initial path is 60 degrees, which means that the angle between the two spheres after the collision is 150 degrees (90 + 60).

Using conservation of momentum, we can set the initial and final momenta equal to each other:

m₁ * v₁ + m₂ * v₂ = m₁ * v₁' + m₂ * v₂'

We can also break down the final velocities into their x and y components using trigonometry. Let's define the angle between the first sphere's final path and the x-axis as theta. Now we can use conservation of momentum to solve for the final velocities:

m₁ * v₁ + m₂ * v₂ = m₁ * v₁' * cos(theta) + m₂ * v₂' * cos(150 degrees)

0 = m₁ * v₁' * sin(theta) + m₂ * v₂' * sin(150 degrees)

Solving the first equation for v₂', we get:

v₂' = (m₁ * v₁ + m₂ * v₂ - m₁ * v₁' * cos(theta)) / (m₂ * cos(150 degrees))

Substituting this expression into the second equation and solving for v₁', we get:

v₁' = (m₂ * sin(150 degrees) * v₁ + m₂ * sin(150 degrees) * v₂ + m₁ * sin(theta) * v₁' - m₁ * sin(theta) * m₂ * v₁ * cos(theta) / cos(150 degrees)) / (m₁ * sin(theta))

Plugging in the given values and solving, we get:

v₁' = 3.47 m/s

v₂' = 3.08 m/s

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Answer:

particles or arranged will be the answer depending on the previous line.

Answer:

Solids are crystalline , usually in a regular repeating pattern.

A wave crest arrives on the shore a median of every 10. zero seconds, so the frequency is 0. one hundred Hz. The average speed of the waves is 1.five m/s.

We are to decide the common pace of the waves.

Using the formula

v = fλ

Where

v is the speed

f is the frequency

and λ is the wavelength

From the given information

f = 0.1 Hz

λ = 15.0 m

∴ Speed of the wave = 0.1 × 15.0

Speed of the wave = 1.5 m/s

Average speed is defined as the total distance traveled by an object divided by the time taken to cover that distance. It is the measure of the average rate at which an object covers a certain distance in a given amount of time. Mathematically, the average speed is expressed as: Average speed = Total distance traveled / Time taken

It is important to note that average speed is not the same as instantaneous speed, which refers to the speed of an object at a particular instant in time. Average speed takes into consideration the entire adventure, while instant velocity only reflects the velocity at a unmarried moment. The unit of measurement for average speed is meters per second (m/s) or kilometers per hour (km/h), depending on the system of measurement used.

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If ω is the original angular speed, the new angular speed (ω') would be ω/2.If the mass of an object rotating in a circular path is suddenly doubled without changing its radius, the angular speed of the object would decrease.

This can be explained using the principle of conservation of angular momentum.Angular momentum (L) is given by the product of moment of inertia (I) and angular velocity (ω). Mathematically, L = I * ω.

When the mass of the object is doubled, the moment of inertia (I) increases proportionally. If the radius remains constant, the moment of inertia is directly proportional to the mass, so I becomes 2 times its original value.

To maintain the conservation of angular momentum, if I doubles, the angular velocity (ω) must be halved. Therefore, the angular speed would decrease by a factor of 2.

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Answer:

I'm not to sure but I think the answer is 1.5m/s^2

Explanation:

Acceleration = Change in Velocity over Time.

So we get 15 - 0.0 divided by 10.0 which = 1.5m/s^2

But again I'm no expert I'm learning this stuff just like you guys.

Answer:  In an inelastic collision, the total kinetic energy after the collision is not equal to the total kinetic energy before the collision. While inelastic collisions may not conserve total kinetic energy, they do conserve total momentum.

Explanation:

The final kinetic energy is less than the initial kinetic energy.

Kinetic energy is the form of energy that one possesses when he is in motion.

During an inelastic collision, the momentum of the system is conserved, but the total kinetic energy is not conserved.

Some part of the initial kinetic energy of the system gets lost in the form of heat, light, and sound produced during the collision. Consequently, the final kinetic energy must be less than the initial kinetic energy.

Thus, the final kinetic energy is less than the initial kinetic energy.

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The FBI's Mitochondrial DNA Unit looks at hairs connected by microscopic comparison.

Quantity: A measurable quality, such as mass, length, time, volume, or pressure. Unit: A reference unit used to measure other quantities. Chemists use a variety of measurements. if 6.0 grams of a substance's bulk were discovered.

These are the three basic units: Mass: The body's mass is used to calculate how much matter it contains. The kilogram, or Kg, seems to be the basic unit of mass. Time is a quantifiable length of time. Seconds (s) are the fundamentally important unit of time. The length separating an object's two ends is known as its length.

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a. The restoring force in the spring has magnitude

F[spring] = k (0.79 m)

which counters the weight of the mass,

F[weight] = (0.46 kg) g = 4.508 N

so that by Newton's second law,

F[spring] - F[weight] = 0   ⇒   k = (4.508 N) / (0.79 m) ≈ 5.7 N/m

b. Using the same equation as before, we now have

F[weight] = (0.75 kg) g = 7.35 N

so that

(5.7 N/m) x - 7.35 N = 0   ⇒   x = (7.35 N) / (5.7 N/m) ≈ 1.3 m

Answer:

hsihe eie sis s8s sossis sis sis s8e s8s sis us sus sud dud d8d dis is eid did die did due idd id did did dud dud dh

Explanation:

I'm stubborn and hold grudges so I did it back :l

Answer:

number one use carbon 14

Explanation:

Answer:

A

Explanation:

Carbon-14 testing of organic material such as wood can approximate the age by measuring the radioactive decay rate of the carbon-14 in the wood. From that a baseline for the trees age can be established and the ring patterns can by applied to a time period.

Total angular velocity is 13.7 rad/s.

Given that an object is moving in a circular motion, we can infer that the system involving the athlete, the ball, and the rope is also moving in a round fashion.

We are informed that the athlete is 181 cm tall, has a 90 cm arm span, and will be using a 121 cm long ball and chain for the competition. With both arms hanging on to the ball and chain handle as the athlete starts to spin, their body becomes the centre of the action. The ball and chain's initial linear velocity is 29 m/s when it is released.

The radius of the path= 90 cm + 121 cm

                                    = 211cm or 2.11 m

Using;
linear velocity = radius * angular velocity

V = rω

ω = V/r

ω =  29m/s/2.11 m

ω = 13.7 rad/s

angular velocity of athlete is 13.7 rad/s

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Electromagnetic radiation is a sort of energy emission. This has two components, electrical and magnetic components, as is clear from the name. The radiation is hence known as electromagnetic radiation. In Fig. 1.1, it is depicted. From a very low frequency of 3 Hz to a very high frequency of 300 EHz (1 EHz = 1018 Hz), this radiation has a wide frequency range. Table 1.1 lists the metric prefixes along with their symbols.

The magnetic and electric vectors are perpendicular to one another and to the path of propagation. In Fig. 1, this is depicted. 1. Depending on the frequency, this electromagnetic spectrum is separated into different section

 Wavelength and Frequency Relationship

Wavelength

According , a wavelength is the separation between two crests or troughs. It is described in the "electronic spectrum" in terms of nm. 1 nm = 10−9 m. Radiation's energy and wavelength are inversely related. In other words, energy increases when the wavelength lowers and decreases when the wavelength grows.

In the IR spectrum, wavenumber, which has the SI value of cm1, is used in place of or v.

 The relationship between frequency and wavelength

where is the wavenumber, is the wavelength, c is the speed of light, and is the frequency of the radiation.

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Answer:

One might think the hair dryer and ceiling fan have comparable electricity usage, since both items are small and the hair dryer is only used for short periods while fans are used for long periods of time. So the hair dryer can use a lot of energy at once while a fan needs to use the energy slowly. I hope that this exsplanation helps you.

Attraction between people is Gravitation while people and earth is Gravity.

Every body in the universe attracts every other body with a force called force of gravitation. The attraction between sun and earth , attraction between table and chair lying in a room ..etc. are examples of gravitation. Gravitation is the weakest of four basic forces in nature. However , its most important force as it has its contribution in initiating the birth of stars and controlling the structure and evolution of entire universe.

Gravity is the special case of gravitation. If one of the attraction body is earth then gravitation is gravity.

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The actual volume of the cone is 160/3 cm3, and it increases from the center of the base to the tip. The form of a cone with a dotted line.

The amount of quantity that is gained by the solid or object when it is located in three-dimensional space is referred to as the volume of the solid.

The volume of the cone may be calculated using the formula below, which is as follows:

\(V=\frac{\pi r^2 h}{3}\)

The radius of the cone's base is denoted by the symbol (r), while the height of the cone is denoted by the symbol (h).

The picture of the cone, the volume of which has to be determined, is attached further down.

The height of the cone is 10 centimeters, while the radius measures 4 centimeters. Thus, enter these numbers into the formula shown above as,

\(& V=\frac{\pi(4)^2(10)}{3} \\& V=\frac{160}{3} \pi \mathrm{cm}^3\)

As this is the case, the precise volume of the cone in which the outline of a cone with a dotted line rises from the center of the base to the tip is 160/3 cm3.

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Answer:tublar

Explanation:tublar bikes usaly cost 30-40% more

Answer:

Tubular

Explanation:

In terms of puncture resistance, tubular tyres also rank better than clincher tyres which are prone to pinch flats. However, one staple, nail, or piece of glass can be the end of your tubular tyre, whereas a punctured clincher can be reused with a new inner tube. A tubular tyre can also be ridden safely while flat

→ The charge in electron charge Q(e) is equal to the charge in coulombs Q(C) times 6.24150975⋅1018:

1C = 6.24150975⋅10¹⁸e

Q(e) = Q(C) × 6.24150975 × 10¹⁸

Q(e) = 96,500 × 6.24150975 × 10¹⁸

Q(e) = 6.02305690875 × 10²³

which is round off to

→ 6.03 × 10²³ electrons

If you wax the hood of a car, when it rains, the raindrops do not stick to the car. Instead, they BEAD UP on the car (bonding with other water molecules) due to adhesion. So the correct option is D.

Adhesion is a property in which a substance with the same properties will unite when they come into contact, staying attached by the force of intermolecular bonds.

As in the example, the water molecules are going to be in an environment where the wax molecules are going to have neutral charges, they are going to be more potentiated to unite with each other due to their different positive and negative charges, which will make them unite closely. This will then cause the water molecules to join together to form water droplets on the surface of the car instead of just spreading.

Therefore, we can confirm that the correct option is D. adhesion.

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Answer:

The word ‘radiation’ is used to describe particles or waves that are emitted by an object  

In physics, radiation is the emission or transmission of energy in the form of waves or particles through space or through a material medium. This includes: electromagnetic radiation, such as radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma radiation (γ)

Explanation:

There are four major types of radiation: alpha, beta, neutrons, and electromagnetic waves such as gamma rays. They differ in mass, energy and how deeply they penetrate people and objects.

The first is an alpha particle. These particles consist of two protons and two neutrons and are the heaviest type of radiation particle. Many of the naturally occurring radioactive materials in the earth, like uranium and thorium, emit alpha particles

The second kind of radiation is a beta particle. It's an electron that is not attached to an atom. It has a small mass and a negative charge. Tritium, which is produced by cosmic radiation in the atmosphere and exists all around us, emits beta radiation. Carbon-14, used in carbon-dating of fossils and other artifacts, also emits beta particles. Carbon-dating simply makes use of the fact that carbon-14 is radioactive. If you measure the beta particles, it tells you how much carbon-14 is left in the fossil, which allows you to calculate how long ago the organism was alive.

The third is a neutron. This is a particle that doesn't have any charge and is present in the nucleus of an atom. Neutrons are commonly seen when uranium atoms split, or fission, in a nuclear reactor. If it wasn't for the neutrons, you wouldn't be able to sustain the nuclear reaction used to generate power.

The last kind of radiation is electromagnetic radiation, like X-rays and gamma rays. They are probably the most familiar type of radiation because they are used widely in medical treatments. These rays are like sunlight, except they have more energy. Unlike the other kinds of radiation, there is no mass or charge. The amount of energy can range from very low, like in dental x-rays, to the very high levels seen in irradiators used to sterilize medical equipment.

The correct answer is e. 0.25. According to the Law of Universal Gravitation, the force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

This means that when the distance between the centers of two objects is doubled, the force between them is reduced to 1/4 of its original value.

Therefore, if the distance between the centers of two objects is doubled and the masses remain constant, the force between the objects is multiplied by a factor of 1/4, or 0.25. This is because the inverse square law states that the force decreases exponentially as the distance between the objects increases.

Understanding this law is important in many fields, including astronomy, physics, and engineering, as it helps to explain the behavior of celestial bodies and the forces that govern their motion.
According to the Law of Universal Gravitation, the gravitational force (F) between two objects with masses (m1 and m2) and a distance (r) between their centers is given by the equation:

F = G * (m1 * m2) / r^2

where G is the gravitational constant.

When the distance between the centers of the objects is doubled (2r), the new gravitational force (F') can be calculated as follows:

F' = G * (m1 * m2) / (2r)^2

Now, we can simplify this equation:

F' = G * (m1 * m2) / (4 * r^2)

From the original equation, we know that F = G * (m1 * m2) / r^2. Therefore, we can rewrite the new equation as:

F' = (1/4) * F

This shows that when the distance between the centers of two objects is doubled, the force between the objects is multiplied by a factor of 1/4 (0.25).

So, the correct answer is e. 0.25.

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The demand for a necessity such as electricity tends to be inelastic. Here's why:Inelastic demand is when changes in price don't affect the quantity demanded as much.

Necessities such as food, water, and electricity often have an inelastic demand, meaning that when the price of the product increases, the quantity demanded does not decrease as much.Explanation:For example, if the cost of electricity increased by 10%, a household might not be able to decrease its use of electricity as much, such as by 10%. The amount of electricity that a household uses might not be affected by price changes because it's a necessity.A vertical demand curve implies that a change in price results in no change in quantity demanded.

Unit elastic refers to a change in price that results in a proportional change in quantity demanded.D elastic refers to the degree of price sensitivity. Demand is said to be elastic when a price change causes a substantial change in demand.

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Options A) B) C) and D) are all advantages of reflecting telescope over refracting telescope.

Advantages:

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Answer:

Explanation:

See attachment.

Decreasing the mass of the objects   No.  Force will change.

Increasing the temperature of the objects Yes,  No change in force (at most a very small change if the heat causes excessive expansion, reducing the distance, although 1/2 will be further apart)

Increasing the distance between the objects No.  Force will change.

Decreasing the distance between the objects  No.  Force will change.

The force between a +65.0 uC point charge and a -1.20 mC point charge that are separated by 3.00 m is 78 Newton(N). These charges attract each other .

The product of the magnitudes of the charges and the square of the distance between them determines the magnitude of the electrostatic force of attraction or repulsion between two point charges. The force acts in a straight line that connects them.

using formula

force = K × (\(\frac{q1*q2}{x*x}\))

k=force constant=9×10⁹ kg⋅m²⋅s⁻⁴⋅A⁻².

x = 3 m

q1 = +65.0 uC

q2= -1.20 mC

substituting values ,

force = 78 Newton

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