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Answer: According to this theory, the Sun and all the planets of our Solar System began as a giant cloud of molecular gas and dust. hope it helps.

Explanation:

Answer:

The correct solution is "\(5\times 10^{-4}\) %".

Explanation:

The given values are:

Pressure,

\(\Delta P=7\times 10^5 \ N/m\)

for copper,

\(B=14\times 10^{10} \ N/m\)

As we know,

The Bulk Modulus (B) = \(\frac{\Delta P}{-\frac{\Delta V}{V} }\)

or,

The decrease in volume will be:

= \((\frac{\Delta V}{V})\times 100 \ percent\)

then,

= \(\frac{\Delta P}{B}\times 100 \ percent\)

On putting the values, we get

= \(\frac{7\times 10^5}{14\times 10^{10}}\times 100 \ percent\)

= \(5\times 10^{-4} \ percent\)

The splitting of water using light energy is called photolysis.

Photolysis is a chemical process in which water molecules are broken down into their constituent parts, hydrogen (H2) and oxygen (O2), using light energy. This process occurs during photosynthesis in plants and algae, specifically in the light-dependent reactions of photosynthesis.

Photolysis is an essential step in the production of oxygen and the generation of energy-rich molecules like ATP and NADPH during photosynthesis. It involves the absorption of light energy by specialized pigments, such as chlorophyll, which triggers the splitting of water molecules. The liberated oxygen is released into the atmosphere, while the hydrogen atoms are utilized in the synthesis of energy-rich compounds. Photolysis is a vital process that sustains life on Earth by contributing to the production of oxygen and the storage of energy in organic molecules.

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Answer:

atomic mass = 20.2 amu

atomic number = 10

Explanation:

The atomic mass is the average mass of an atom of a particular element. For neon, the atomic mass is about 20.180 amu. Rounded to the nearest tenth, the atomic mass is 20.2 amu.

The atomic number is the number of protons in the nucleus of a particular element. For neon, the atomic number is 10.

Both of these values can usually be found on the periodic table under neon (Ne).

The rubber is stretched and firmly gripped by the nail due to the pressure inside the tire, which prevents air leakage.

The force of all gas particle/wall collisions divided by the surface area of the wall is the definition of pressure (P): One of the fundamental measurable quantities of this phase of matter, pressure is a property shared by all gases. The amount of force applied to a given area is referred to as pressure.

For instance, the weight of the snow divided by the area of the roof would represent the pressure from snow on a roof. Gases are typically where pressure in chemistry comes from. Gas is added to a balloon before it is inflated. Gas molecules collide with one another and the balloon's walls.

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The volume of the spherical snowball is decreasing at a rate of approximately 6.08 cm³/min when the radius is 16 cm.

The volume of a sphere can be calculated using the formula V = (4/3)πr³, where V is the volume and r is the radius. To find the rate at which the volume is changing with respect to time, we can take the derivative of the volume formula with respect to time. Let's denote the rate of change of the volume as dV/dt and the rate of change of the radius as dr/dt.

We are given that

dr/dt = -0.3 cm/min,

which means the radius is decreasing at a rate of 0.3 cm per minute. We want to find dV/dt when the radius is 16 cm.

Differentiating the volume formula, we have

dV/dt = 4πr²(dr/dt).

Substituting the given values, we get

dV/dt = 4π(16)²(-0.3) = -6.08π cm³/min.

Therefore, when the radius is 16 cm, the volume of the snowball is decreasing at a rate of approximately 6.08 cm³/min.

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Answer:

900 J

Explanation:

0.5 x 50= 25 x 6^2= 900 J

A wire at each end of a 1.25 m-long shelf that is supported by two wires on either side has a strain of 160 N and 320 N respectively.

Formula: T2(0m)- 160N)(0.625m)- 370N)(0.83m) + T1(1.25)

=0 (point A);

Point A: T=320N

T2(1.25m)-(160N)(0.625m)-(370N)(0.42)

= 0 (point B)

Point B: T = 210N

On medium-length materials like rope and cable that are also flexible, a force called as tension is very effective. Still in tension is a gravitational force. The formula T = W + ma indicates the tension as the body moves higher. When the body is descending, the thickness is equal to T = W - ma.

It is redundant because the tension in the left wire is larger than the gravitational force.

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The value of m is 3.735 and the value of n is 7 when the momentum of the train is written in scientific notation.

Mass (m) times velocity (v) equals momentum. The momentum is calculated from the train's mass of 4.5×\(10^5\) kg and velocity of 8.3×\(10^1\)m/s:

Momentum=mass x velocity

Momentum=(4.5×\(10^5\) kg) x (8.3×\(10^1\) m/s).

In scientific notation, we multiply the coefficients (4.5 and 8.3) and add 10 exponents:

Momentum=4.5 x 8.3 x \(10^{5+1}\) kg·m/s

Calculating simpler:

Momentum: 37.35 × \(10^6\) kg·m/s

Rewrite momentum in scientific notation:

Momentum=3.735×\(10^7\)kg·m/s

In scientific notation, the train's momentum is 3.735 and n equals 7.

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The density of the metal is (d) 12.6 g/mL.

Density is a fundamental physical property of matter that relates the mass of an object to its volume. The density of an object can be determined by dividing the object's mass by its volume. In this problem, we are given the mass and volume of an irregularly shaped piece of metal and asked to determine its density.

To calculate the density of the metal, we first need to calculate the volume of the metal. We can do this by subtracting the initial volume of water (35.00 mL) from the final volume of water (52.50 mL) with the metal in the cylinder. This gives us the volume of the metal, which is 17.50 mL.

Next, we can calculate the density of the metal by dividing its mass (220 g) by its volume (17.50 mL), giving us a density of approximately 12.6 g/mL. Therefore, the correct answer is (d) 12.6 g/mL.

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For a steel piano wire, 0.721 m long has a cross-sectional area of 0.00633 cm2.  is mathematically given as

de=9.624723*10^{-4}m

Generally, the equation for the Hooks law  is mathematically given as

F/A=Yde/e

Therefore

dl=fe/Ay

de=\frac{169*0.721}{0.00633*10^{-4}*2 x 10^{11} }

de=9.624723*10^{-4}

In conclusion, the wire stretch

de=9.624723*10^{-4}m

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Answer:

because he is trying to break past you and sack your quarterback

Explanation:

When you push a pencil off your desk, the energy transformation that takes place is that potential energy transforms into kinetic energy.

The correct answer to the given question is option C.

Potential energy is the energy stored within an object because of its position or configuration.

In this scenario, the pencil has potential energy because of its elevated position on the desk. When the pencil is pushed off the desk, it begins to move, which means that it has kinetic energy. Kinetic energy is the energy of motion.

As the pencil falls off the desk, its potential energy is transformed into kinetic energy, which is the energy that results from its motion. The faster the pencil falls, the greater its kinetic energy will be because kinetic energy is directly proportional to the square of an object's velocity.

Therefore, when you push a pencil off your desk, the potential energy that it has because of its elevated position is transformed into kinetic energy as it falls towards the ground.

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Answer: molecules heat up under different ranges of heat causing bonds to break down but depends on the solid. There are different melting points.

Explanation:

Hence the expression of ω in terms of m and k is

\(\omega = \sqrt{\frac{k}{m}\)

Given the expressions;

\(T_s = 2 \pi \sqrt{\frac{m}{k} } \ and \ T_s = \frac{2 \pi}{\omega}\)

Equating both expressions we will have;

\(2 \pi \sqrt{\frac{m}{k} } = \frac{2 \pi}{\omega}\)

Divide both equations by 2π

\(\frac{2 \pi\sqrt{\frac{m}{2 \pi} } }{2 \pi}=\frac{\frac{2 \pi}{\omega} }{2\pi}\\\sqrt{\frac{m}{2 \pi} } = \frac{1}{\omega}\\\)

Square both sides

\((\sqrt{\frac{m}{k} } )^2 = (\frac{1}{\omega} )^2\\\frac{m}{k} = \frac{1}{\omega ^2} \\\omega ^2 = \frac{k}{m}\)

Take the square root of both sides

\(\sqrt{\omega ^2} =\sqrt{\frac{k}{m} } \\\omega = \sqrt{\frac{k}{m}\)

Hence the expression of ω in terms of m and k is

\(\omega = \sqrt{\frac{k}{m}\)

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Force applied is directly proportional to displacement.

It is given by the formula

Here F is the force , k is the spring constant , x is the displacement.

Substituting the values,

Answer:

P.E = 2934.75

Explanation:

Potential energy can be defined as an energy possessed by an object or body due to its position.

Mathematically, potential energy is given by the formula;

\( P.E = mgh\)

Where, P.E represents potential energy measured in Joules.

m represents the mass of an object.

g represents acceleration due to gravity measured in meters per seconds square.

h represents the height measured in meters.

Given the following data;

Weight =645

Height = 4.55

\( P.E = mgh\)

But we know that weight = mg = 645N

Substituting into the equation, we have;

\( P.E = 645 * 4.55 \)

\( P.E = 2934.75 J\)

Potential energy, P.E = 2934.75 Joules.

The difference between the momentum before and after the bounce was 1.407 kg/s.

initial energy = mg(3) J = 29.4J

After bouncing ,energy = mg(2) =19.6J

Ball's change in energy = 29.4J - 19.6J = 9.8J

This energy is dissipated in the form of heat energy or sound energy.

work done during the bounce = 9.8J

change in momentum = mvf-mvi

29.4 = 1/2m\(vi^{2}\)

vf =7.668m/s

19.6J =1/2m\(vf^{2}\)

vf=6.261m/s

Change in momentum = m(vf-vi) = 1kg x (-1.407m/s) = -1.407

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Answer:

All four words are the name of elements.

Hydrogen, oxygen, carbon, nitrogen, calcium, and iron are all important substances found in the body and in environments. They can be combined with each other, and with other substances to form larger compounds.

But i think the answer is nucleic acids..

Explanation:

Well, hope it helps you..

I tried to answer it..

Your welcome in advance..

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Answer: here the answer!

Explanation:

In the world of mechanics, there are four basic types of motion. These four are rotary, oscillating, linear and reciprocating. Each one moves in a slightly different way and each type of achieved using different mechanical means that help us understand linear motion and motion control.

Answer:

Explanation:

The potential energy of a body can be found by using the formula

PE = mgh

where

m is the mass

h is the height

g is the acceleration due to gravity which is 10 m/s²

From the question we have

PE = 10 × 10 × 20 = 2000

We have the final answer as

Hope this helps you

Answer:

\(\boxed {\boxed {\sf 1,960 \ J}}\)

Explanation:

Potential energy is the energy an object possesses due to its position. It is calculated using the following formula:

\(PE= mgh\)

The mass (m) of the rock is 10.0 kilograms. The rock is on top of a hill that is 20.0 meters tall (h). Assuming this situation is occurring on Earth, the acceleration due to gravity is 9.8 meters per second squared (g).

Substitute the values into the formula.

\(PE= (10.0 \ kg)(9.8 \ m/s^2)(20.0 \ m)\)

Multiply the first two values together.

\(PE=(98 \ kg*m/s^2)(20.0 \ m)\)

Multiply again.

\(PE= 1960 \ kg*m^2/s^2\)

Convert the units. 1 kilogram meter squared per second squared is equal to 1 Joule, so our answer of 1960 kg*m²/s² is equal to 1960 J.

\(PE= 1960 \ J\)

The rock has 1,960 Joules of potential energy.

The force constant of the spring is 200.696 N/m & The height the object achieves when the spring releases its energy is 2.5087 m

The spring constant is the force needed to stretch or compress a spring, divided by the compressive or expansive distance. It's used to determine stability or instability in the spring, and therefore the system it's intended for. we know,

F = kx

Therefore,

k = F/x

We also know that the force being exerted on the spring is equal to the mass of the object. Hence, F = mg = 5.13 * 9.8 N = 50.174 N and we know compression due to the mass is 0.25m. Therefore,

K = 50.174/0.25 N/m

K = 200.696 N/m

Therefore, The Spring Constant is 200.696 N/m

On release, the spring potential energy gets converted to kinetic energy. Hence, on release, the height attained by the object is given by:

h = \(1/2 kx^{2}\)

We know that k=200.696 N/m and x=0.25 m. Therefore the height is:

h = \(1/2 (200.696 N/m)(0.25 m)^{2}\)

h = 2.5087 m

Therefore, the force constant of the spring is 200.696 N/m & The height the object achieves when the spring releases its energy is 2.5087 m

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Answer:

emf = 15 * Area  and if A is given in square meters, the units of the emf will be Volts

Explanation:

Assuming that the area of the loop of current (A) is known, the magnitude of the induced emf can be calculated using Faraday-Lenz's Law:

\(emf=|-\frac{\Delta\,\Phi}{\Delta \,t} |=|\frac{A\,B}{\Delta \,t}|=|\frac{A\,(3)}{0.2}|=15\,A\)

and if the area (A) is given in square meters, the emf will directly come in units of Volts.

The resistance of the electric heating element can be determined using Ohm's law, which states that resistance (R) is equal to voltage (V) divided by current (I). In this case, the voltage across the element is given as 232 volts and the current flowing through it is 19 amperes. The correct option is 12 ohms.

Applying Ohm's law, we calculate the resistance as:

R = V / I

R = 232 volts / 19 amperes

R ≈ 12 ohms

Therefore, the resistance of the element is approximately 12 ohms. This means that for every ampere of current flowing through the element, there is a voltage drop of 12 volts. The resistance value of 12 ohms indicates that the element has a moderate level of electrical resistance, which allows it to generate heat efficiently when current flows through it. Thus, the correct option is 12 ohms.

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A Van de Graaff generator is a device that uses electrostatics to generate and store high voltages. It operates on the principle of electrostatic charge accumulation and uses a moving belt to transfer charges to a large metal sphere or dome.

The generator typically consists of the following components:

1. Belt: A non-conductive belt, usually made of rubber or a similar material, is moved continuously by a motor-driven pulley system.

2. Charging mechanism: The lower part of the generator contains one or more rollers or combs made of metal. These combs are connected to a high-voltage power source, such as an electrostatic generator or power supply.

3. Metal sphere or dome: The upper part of the generator features a large metal sphere or dome, often mounted on an insulated column. This serves as the terminal for accumulating the charge.

When the generator is turned on, the belt starts moving. As the belt passes over the charging mechanism, the metal combs or rollers transfer charge to the belt. Due to the triboelectric effect (contact-induced charging), the belt becomes positively or negatively charged, depending on the materials involved.

The charged belt carries the accumulated charge to the upper metal sphere or dome, which becomes charged to a high voltage. Since the sphere or dome is insulated, the charge is stored on its surface. The generated voltage can reach tens or even hundreds of thousands of volts.

The Van de Graaff generator demonstrates various electrostatic phenomena and can be used for different purposes, such as:

Electrostatic experiments: It allows researchers and educators to demonstrate the principles of electrostatics, including the attraction and repulsion of charged objects, electrical discharges, and the behavior of electric fields.

Particle accelerators: Van de Graaff generators have been used as particle accelerators in low-energy physics experiments. They can accelerate charged particles, such as electrons or ions, to high energies by applying a high voltage to the metal sphere or dome.

Electrostatic demonstrations: The high voltages generated by Van de Graaff generators can be used to create impressive and visually striking electrostatic effects, such as electric sparks, hair standing on end, or lighting up fluorescent tubes without physical connections.

The Van de Graaff generator utilizes electrostatics to generate and store high voltages, allowing for educational demonstrations, scientific experiments, and certain applications in particle physics.

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Answer:

it = 5.5e-5 cm

just tyoe in on the search bar nm to cm and a calculatro comes up

Explanation: