what property of light is suggested by the formation of shadows​

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.

learn more about Size exclusion chromatography at -

brainly.com/question/24210741

Answer:

10 m

Explanation:

PE = mgh

m = 50kg

g= 9.8 m/s^2

h=?

so,

4900= 50×9.8× h

50h = 4900/9.8

50h = 500

h = 10 m

Answer:

it all is force I the barly kick you then it won't do that much date but If the full force kick you then it might hurt.

Explanation:

i hope this helps

Explanation:

first find the volume of room --->

\(v \: = 10 \times 12 \times (400 \times {10}^{ - 2} ) \times = 480 \: {m}^{3} \)

then find the mass

\(mass \: = \: density \: \times \: volume \: = 480 \times 1.26 = 604.8 \: kg\)

Answer:

1. 4

2.0.625HZ

3.500

4. 428274940000000 or 4.2*10^14

5. 2

Explanation:

omnicalculator.com/physics/wavelength

It is not appropriate to use a rubber protection on high voltage cables that exceeds a transmission voltage of 120000V, because the high voltage transmitted in these lines can cause heating effect on the lines which can melt the rubber used to the coat the lines.

High voltage transmission lines deliver electricity over long distances

This high voltage transmission lines transmit power at very high voltage.

The high voltage rating of these transmission lines often cause heating effect on the lines or wires.

The heating effect of the transmission lines can melt rubbers, hence it is not advised or required to use a rubber to cover these high transmission lines.

Thus,  it is not appropriate to use a rubber protection on high voltage cables that exceeds a transmission voltage of 120000V, because the high voltage transmitted in these lines can cause heating effect on the lines which can melt the rubber used to the coat the lines.

Learn more about high voltage transmission here: https://brainly.com/question/15158529

#SPJ1

ū is not always orthogonal to the span of rows of A or the kernel of A, but it is orthogonal to the image of A and the span of columns of A.

Given that ū is a vector in the kernel (null space) of an nxn matrix A, we can determine its orthogonality to the following sets or vectors:

(a) The image of A: Yes, ū is orthogonal to the image of A. The image of A consists of all the vectors that can be obtained by multiplying A with any vector. Since ū is in the kernel of A, it means that A multiplied by ū yields the zero vector. Consequently, the dot product of ū with any vector in the image of A will be zero, making ū orthogonal to the image of A.

(b) The span of columns of A, also known as the column space of A: Yes, ū is orthogonal to the span of columns of A. Since ū is in the kernel of A, it is orthogonal to every column of A. Thus, it is also orthogonal to the linear combinations of the columns, which form the span of columns of A.

(c) The span of rows of A, also known as the row space of A: No, ū is not necessarily orthogonal to the span of rows of A (row space). The row space consists of the linear combinations of the rows of A. While ū is in the kernel of A and orthogonal to the columns of A, it may not be orthogonal to every linear combination of the rows.

(d) The kernel of A: No, ū is not orthogonal to the kernel of A. The kernel (null space) of A consists of all vectors that, when multiplied by A, yield the zero vector. Since ū is in the kernel, it is not orthogonal to the other vectors in the kernel.

In summary, ū is orthogonal to the image of A and the span of columns of A, but it is not necessarily orthogonal to the span of rows of A or the kernel of A.

To know more about the orthogonal refer here :

https://brainly.com/question/31971350#

#SPJ11

Complete question :

Suppose that A is an nxn matrix and ū is a vector in ker(A). The vector ū is orthogonal to which of the following sets or vectors.

(a) The image of A.

(b) The span of columns of A, also known as the column space of A.

(c) The span of rows of A, also known as the row space of A.

(d) The kernel of A.

When the cold front or wind passes weather station, the pressure increases whereas the temperature increases.

Pressure rises and temperature falls as a cold front passes a New York weather station because wind apply pressure on the objects when they blow. If the wind is cold then the temperature decreases.

So we can conclude that when the cold front or wind passes weather station, the pressure increases whereas the temperature increases.

Learn more about pressure here: https://brainly.com/question/25736513

#SP1

The United States currently consumes approximately 20 million barrels of oil per day, which equates to roughly 7.3 billion barrels per year. If the country were to obtain all of its energy from oil, this amount would increase significantly. According

the U.S. Energy Information Administration, in 2019, the United States consumed a total of 101.0 quadrillion British thermal units  One barrel of oil is equivalent to 5.8 million Btu, which means that the United States would need roughly 17.4 billion barrels of oil to meet its total energy consumption for the year. However, this calculation assumes that the United States would not make any significant efforts to increase energy efficiency or transition to alternative energy sources. In reality, the amount of oil needed each year would likely be less than 100 billion barrels if the country pursued these strategies.


If the United States obtained all its energy from oil, it would require approximately 100 billion barrels of oil each year. This is based on the current energy consumption of the US and the energy content of a barrel of oil. It's important to note that this is a hypothetical scenario, as the US relies on various energy sources such as natural gas, coal, nuclear, and renewables in addition to oil.

To know more about energy Visit;

https://brainly.com/question/2409175

#SPJ11

After the charged rod has touched the wire and been removed, the following surfaces are as follows - The small sphere: Positive, the inner surface of the hollow sphere: Negative and the outer surface of the hollow sphere: Positive.

A little metal sphere which is hanging on an insulating thread inside a bigger hollow conducting sphere is depicted in the illustration. The little sphere has a wire extending from it which does not contact the hollow sphere. To transfer a positive charge through the wire from a charged rod, the rod was disconnected after touching the wire.

The usage of a charged rod to transfer a positive charge to the wire is assumed. As the wire is attached to the inner sphere and does not touch the outer hollow sphere, when the rod touches the wire, the positive charge will move through the wire to the inner little sphere. As a result, the little sphere has a positive charge.

The inner tiny sphere on other hand, is positively charged as a result of the charge transfer through the rod, a negative charge will form on the inner surface of the hollow sphere to balance the positive charge on the small sphere. With a negative charge magnitude equal to the positive charge on the inner sphere.

The hollow sphere's inner surface develops a negative charge from its outer surface, resulting in a positive charge on the larger sphere's outside. As the charge on the inner surface of the larger sphere is equal to and opposite that of the smaller sphere, the larger sphere's outer must be positively charged.

To learn more about hollow sphere,

brainly.com/question/29771388

The correct question is:

A small metal sphere hangs by an insulating thread within a larger, hollow conducting sphere. A conducting wire extends from the small sphere through, but not touching, a small hole in the hollow sphere. A charged rod is used to transfer a positive charge to the wire. After the charged rod has touched the wire and been removed, are the following surfaces positive, negative, or not charged?

The small sphere: ______________

The inner surface of the hollow sphere: __________________

The outer surface of the hollow sphere: __________________

#SP J4

The magnitude of the second charge is approximately 0.1111 Coulombs.

To determine the magnitude of the second charge, we can use Coulomb's law, which states that the force between two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.

The formula for Coulomb's law is:

\(F = (k \times |q1 \times q2|) / r^2\)

Where:

F is the force between the charges,

k is the Coulomb's constant (\(k = 9.0\times 10^9 Nm^2/C^2\)),

q1 and q2 are the magnitudes of the charges, and

r is the distance between the charges.

In this case, we have:

F = 60 N

q1 = \(-6.0 \times 10^{-6} C\)

r = 0.040 m

Plugging these values into the formula, we can solve for q2:

60 N = \(9.0\times 10^9 Nm^2/C^2 \times (-6.0 x 10^{-6}C)\times q2) / (0.040 m)^2\)

To simplify the equation, we can remove the absolute value since the charges are both negative. We also rearrange the equation to solve for q2:

q2 = \((60 N\times (0.040 m)^2) / (9.0\times 10^9 Nm^2/C^2\times 6.0\times 10^{-6} C)\)

Calculating the expression:

q2 =\((60 N\times 0.0016 m^2) / (5.4\times 10^3 C^2)\)

q2 ≈ 0.1111 C

Learn more about force here:

https://brainly.com/question/13191643

#SPJ11

The answer option which is an example of the law of multiple proportions is: B) Two different compounds formed from carbon and oxygen have the following mass ratios: 1.33 g O: 1 g C and 2.66 g O: 1 g C.

The Law of Multiple Proportions is also referred to as Dalton's Law and it states that when two chemical elements combine to form more than one chemical compound, the masses (weights) of one chemical element that combine with a fixed mass (weight) of the other chemical element will always be in a ratio of small whole numbers.

According to the Law of Multiple Proportions, when two chemical elements combine to form two different chemical compound, the masses (weights) of one chemical element that combine with 1 gram of the other chemical element can be expressed as a ratio of small whole numbers.

For example, carbon and oxygen react to form either carbon monoxide and carbon dioxide.

Carbon monoxide (CO):

12 grams of C = 16 grams of O.

1 gram of C = 1.33 gram of O.

Carbon dioxide (\(CO_2\)):

12 gram of C = 32 grams of O.

1 gram of C = 2.66 gram of O.

Ratio of oxygen (O) = 16:32 = 1:2 (Law of Multiple Proportions).

Read more: https://brainly.com/question/21280037

Your question is lacking the necessary answer options, so I will be adding them here:

A. A sample of chlorine is found to contain three times as much Cl-35 as Cl-37.

B. Two different compounds formed from carbon and oxygen have the following mass ratios: 1.33 g O: 1 g C and 2.66 g O: 1 g C.

C. Two different samples of table salt are found to have the same ratio of sodium to chlorine.

D. The atomic mass of bromine is found to be 79.90 amu.

E. Nitrogen dioxide always has a mass ratio of 2.28 g O: 1 g N.

The rate at which the temperature will increase is determined by the formula Q = mcΔT, where Q is the heat transferred, m is the mass, c is the specific heat, and ΔT is the change in temperature.

To find the rate at which the temperature will increase, we can use the formula Q = mcΔT, where Q is the heat transferred, m is the mass, c is the specific heat, and ΔT is the change in temperature.

In this case, the heat transferred is unknown, the mass is 20.0 kg, the specific heat is 0.220 kcal/(kg · °C), and we want to find the rate of change of temperature, which we'll call dT/dt.

Rearranging the formula, we get dT/dt = Q / (mc).

Since we are assuming no heat escapes, the heat transferred Q is equal to the input heat.

Therefore, dT/dt = (input heat) / (mc).

Without the input heat value, we cannot calculate the exact rate of temperature increase, but we can determine the formula to use.

Learn more about specific heat here:

https://brainly.com/question/29766819

#SPJ11

True, fluidized particles behave essentially as though they were liquid.

In a fluidized state, solid particles are suspended in a gas or liquid, causing them to exhibit fluid-like behavior. This occurs when the upward force exerted by the fluid on the particles balances the downward gravitational force. The particles move freely and are in constant motion, similar to the behavior of a liquid.

When particles are fluidized, they exhibit several characteristics similar to those of a liquid, such as:

1. Flowing around objects: Like a liquid, fluidized particles can flow around objects, filling available space and conforming to the shape of their container.

2. Mixing and uniformity: In a fluidized state, particles are well mixed, similar to a liquid. This promotes uniformity in temperature, concentration, and other properties.

3. Ability to transport: Fluidized particles, like liquids, can be easily transported through pipes and channels, enabling efficient processing in various industries.

4. Viscosity: Fluidized particles exhibit a viscosity that can be similar to a liquid, allowing them to flow at varying rates depending on the force applied.

5. Surface tension: Although not as prominent as in liquids, fluidized particles may exhibit some surface tension effects, such as the formation of a stable interface with other fluids.

In summary, it is true that fluidized particles behave essentially as though they were liquid due to their ability to flow, mix, transport, and exhibit properties such as viscosity and surface tension.

Learn more about liquid at: https://brainly.com/question/5761716

#SPJ11

Answer:

mass = 27750 kg

Explanation:

acceleration: (change in velocity)÷(time)

acceleration = (final velocity - initial velocity) ÷ time taken

Given that:

Final velocity is 250 km/h and initial is 0 km/h and time is 2.05s

acceleration = [(250 - 0) ÷ 0.0005694444]

acceleration = 439024.4 km/h²

conversion to m/s² :

acceleration = 439024.4 m/s²

--------------------------------------------------------------------

Force = mass(kg) * acceleration(m/s²)

we know that force is  9.40×10^5 N

9.40×10^5 = mass(kg) *   33.875 (m/s²)

mass =  9.40×10^5 ÷  33.875

mass = 27750 kg

Explanation:

20 joule is your answer

Answer:

here

mass m =100kg

distance d=50m

acceleration due to gravity a =10m/s²

work =force×displacement

= ma/d=100×10/50=20joule

ANSWER and EXPLANATION

We want to identify how to test to see if a sample is a metal or not.

To do this, the malleability of the sample can be tested. This is done by striking the sample with a hammer/mallet.

Metals are malleable i.e. they deform under pressure, compared to non-metals that crack under pressure.

Hence, if after striking it, it can be flattened or deformed then, it is metal but if it cracks or turns to powder, then it is not a metal.

A thermal infrared sensor camera detects infrared radiation and uses this information to create a picture.

In thermal or infrared detection systems, sensors are used to detect radiation in the infrared region of the electromagnetic spectrum. The thermal energy or heat produced by the scene being watched is detected by an infrared camera, which then transforms it into an electrical signal. After that, this signal is processed to create an image. An infrared camera's ability to detect heat can be quantified very precisely. Infrared cameras can be used to assess thermal performance and gauge the intensity of heat-related issues. In general, bodies and objects produce more radiation when they are heated up. Walls and other solid things cannot be seen through infrared cameras. They are limited to measuring heat.

To know more about the infrared detection camera, visit:

https://brainly.com/question/20009656

#SPJ1

This pRTICULAR QUESTION IS HARD TO anSwer <3

Answer:

ground Waves

Explanation:

Answer:

Obviously, the 5lb ball when thrown will go farther . Newton second law of motion F = mass x acceleration .

So the more the mass , the more force will be used to throw the ball.

Explanation:

The graph shown in the first option nicely plots the lion's and gazelle's velocities as a function of time, so option A is the correct answer.

Velocity is the rate of change of displacement over time.

As mentioned in the problem of running at a constant speed towards a gazelle with a standing lion as shown above.

So option A is correct.

To know more about velocities,

https://brainly.com/question/13471585

#SPJ4

Energy is a fundamental concept in physics that describes the ability of a system to do work. In other words, energy is the ability to cause change in a system. There are many different forms of energy, such as thermal, kinetic, and potential energy, and each form of energy can be measured in units called joules (J). The joule is the SI unit of energy, and it is used to measure all forms of energy in the International System of Units (SI).

A joule is defined as the amount of energy required to perform a specific amount of work.

Energy can also be measured in other units, such as calories (cal), which is commonly used in nutrition to measure the energy content of food. However, in physics, the joule is the preferred unit of energy.

To know more about energy here:

https://brainly.com/question/1932868#

#SPJ11

Answer :

The last one I think

When you stand at rest on a pair of bathroom scales: the readings on the scales will always add to equal your weight. The correct option is (b)

This is because your weight is distributed evenly between the two scales, and when you combine the readings, you get the total weight.

Scales are the equipment used for measuring the weight of an object or body. The traditional scales are the ones used by grocers for weighing food and other things. Scales come in a variety of shapes and sizes, and the principles of their operation vary depending on the kind of scales.

A spring scale works on the principle of Hooke's law, which states that the force applied to an elastic object, like a spring, is proportional to the amount of deformation that occurs. The movement of the spring causes the pointer on the scale to move.

Scales also contain a calibration mechanism that enables them to read in various units, such as grams or pounds. Scales are used in a variety of settings, from grocery stores and industrial workplaces to doctors' offices and homes.

When you stand at rest on a pair of bathroom scales, the readings on the scales will always (c)

To know more about "Hooke's law" refer here:

https://brainly.com/question/29126957#

#SPJ11

Answer:

B. 3 beats per second.

Explanation:

I got the same question in gizmos and got it right.

The given statement "the sun’s right ascension reaches its maximum in the summer solstice." is False. Because, the right ascension of the Sun does not reach its maximum during the summer solstice.

Right ascension is a celestial coordinate similar to longitude, which measures the eastward position of an object in the sky. The right ascension of the Sun is constantly changing throughout the year due to the Earth's orbit around the Sun. During the summer solstice, the Sun reaches its highest point in the sky in the Northern Hemisphere, which corresponds to its maximum declination. However, the right ascension is not directly related to the solstice and does not reach its maximum during that time.

To know more about  celestial coordinate, here

brainly.com/question/32242415

#SPJ4

(a.i) The velocity of the entangled cars after the collision is 8.53 m/s.

(a.ii) The loss in kinetic energy of the situation described is  179,201.7 J.

(b) The final velocity of the heavier car if the smaller car moved backwards is 11.85 m/s forward.

The final velocity of the cars after the collision is calculated by applying the principle of conservation of linear momentum as shown below.

m₁u₁  +  m₂u₂  = v(m₁ + m₂)

where;

820(25.6) + 1640(0) = v(820 + 1640)

20,992 + 0 = 2460v

v = 20,992 / 2460

v = 8.53 m/s

The lost in kinetic energy of the situation described is calculated as follows;

ΔK.E = K.Ei - K.Ef

K.Ei = ¹/₂m₁u₁²  +   ¹/₂m₂u₂²

K.Ei = ¹/₂(820)(25.6)²  +   ¹/₂(1640)(0)²

K.Ei = 268,697.6 J

K.Ef = ¹/₂(m₁ + m₂)v²

K.Ef = ¹/₂(1640 + 820)(8.53)²

K.Ef = 89,495.91 J

ΔK.E = K.Ei - K.Ef

ΔK.E = 268,697.6 J - 89,495.91 J

ΔK.E =  179,201.7 J

The final velocity of the heavier car if the smaller car moved backwards is calculated as;

m₁u₁  +  m₂u₂  = m₁v₁ + m₂v₂

where;

m₁u₁  +  m₂u₂  = m₁v₁ + m₂v₂

820(25.6) + 1640(0) = (820)(-1.9) + 1640(v₂)

20,992 = 1558 + 1640v₂

1640v₂ = 19,434

v₂ = 19,434 / 1640

v₂ = 11.85 m/s

Learn more about loss of kinetic energy here: https://brainly.com/question/7221794

#SPJ1

Light rays first pass through the transparent layer called the cornea and then refracted again as they pass through the transparent lens.

How do light rays flow in the eyes?

The first factor in the journey of light via the eye is the objects being seen and how they produce, reflect, or change the light in various ways.

The visual cortex of the brain's occipital lobe serves as the destination of the light pathway, which starts with photoreceptors in the retina. Rod and cone cells are two different types of photoreceptors. When it comes to eyesight in low light and in peripheral vision, rods can be especially helpful.

The cornea is where most of the refraction occurs as light enters the eye's curved, transparent front surface. The natural or crystalline lens of the eye also distorts light rays. When an item passes in front of the eye, its rays pass through the transparent cornea and enter the eye.

Learn more about Light rays here:

brainly.com/question/23281551

#SPJ4