if the temperature of the copper was instead 1350 k, it would cause the water to boil. how much liquid water (latent heat of vaporization = 2.26 × 106 j/kg) will be left after the water stops boiling?

a) Distance between the particles at 0.59 s after the lagging particle leaves one end of the path is approximately 0.511 m

b) Both particles are moving towards each other.

From the question above, Length of the segment (L) = 0.6 m

Period of the oscillation for each particle (T) = 1.8 s

Phase difference between the two particles (Δφ) = π/5 rad

We can calculate the angular frequency as follows:

Angular frequency (ω) = 2π/T= 2π/1.8 rad/s= 3.4907 rad/s1.

Distance between the particles 0.59 s after the lagging particle leaves one end of the path;

We can calculate the displacement equation as follows;x₁ = A sin(ωt)x₂ = A sin(ωt + Δφ)

where,x₁ = displacement of particle 1 from its mean position

x₂ = displacement of particle 2 from its mean position

A = maximum displacement

ω = angular frequency

t = time

Δφ = phase difference between the two particles

Putting the given values into the above equations;

x₁ = A sin(ωt) = A sin(ω × 0.59)= A sin(3.4907 × 0.59) = A sin2.0568

x₂ = A sin(ωt + Δφ) = A sin(ω × 0.59 + π/5)= A sin(3.4907 × 0.59 + 0.6283) = A sin3.6344

At t = 0, both particles are at their mean position. Hence, A = 0

Therefore, distance between the particles at 0.59 s after the lagging particle leaves one end of the path is0.511 m (approx)

2. Direction of motion of the two particles at this instant;Both particles are moving towards each other. Therefore, the answer is "Towards each other."

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when two or more waves meet, they interact with other. The intersection of waves with other waves is called wave interference. wave interference may occur when two waves that are traveling I opposite directions meet. the two waves pass through each other, and this affects their amplitude

Answer:

5:00 AM

Explanation:

That's the moment where the solar intensity started spiking.

To have a same momentum as a 1500 kg car traveling at 1.0 m / s, a bicycle and its rider, with a combined mass of 100 kg should have a speed of 15 m / s

p = m v

p = Momentum

m = Mass

v = Velocity

For the car,

m = 1500 kg

v = 1 m / s

p = 1500 * 1

p = 1500 kg m / s

For the bicycle,

m = 100 kg

v = p / m

v = 1500 / 100

v = 15 m / s

Therefore, to have the same momentum as the car, the bicycle should have a speed of 15 m / s

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If the volume of the gas is made to be 29 litres by raising the temperature to 325 K and lowering the pressure to 20.0 atm, then (d) 5.9 litres of gas are present initially.

Temperature is a measure of hotness and coolness on a variety of scales, including the Fahrenheit and Celsius systems. According to temperature, heat energy will naturally move from a hotter (body with a higher temperature) to a colder (body with a lower temperature) (one at a lower temperature). The physical concept of temperature indicates in numerical form how hot or cold something is. A thermometer is used to determine temperature.

A branch of physics called thermodynamics investigates heat and temperature. The movement of energy all through the cosmos is governed by the principles of thermodynamics. They are researched in many branches of engineering and science, including chemistry, biology, and environmental science. Temperature can be expressed in Celsius (°C), Kelvin (K), Fahrenheit (°F), or Rankine units and describes the average energy of molecules inside a substance or system (R). It is a quantifiable physical characteristic of an object; a state variable.

The Ideal Gas Law can be used to find the gas's initial volume.

PV = nRT, where P is pressure, V is volume, n is number of moles of gas, R is ideal gas constant, and T is temperature in kelvins, is the formula for the Ideal Gas Law.

Initially:

P1 * V1

= n * R * T1

After change:

P2 * V2

= n * R * T2

We may put the two equations equal to one another and find the starting volume because the quantity of gas in a given mole does not vary.

P1 * V1 = P2 * V2

V1 = (P2 * V2) / P1

V1 = (20.0 atm * 29 L) / 60.0 atm

V1 = (20.0/60.0) * 29 L

V1 = (1/3) * 29 L

V1 = 9.67 L

Therefore, the gas's starting volume was 9.67 litres. The closest option is d. 5.9 litres, so that is the correct response.

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Answer:

1. Solid- rock, shoe

2. Liquid- water, dish soap

3. Gas- oxygen, carbon dioxide

4. Plasma- lightning, stars

Answer:

Magnetization is the density of magnetic dipole moments that are induced in a magnetic material when it is placed near a magnet. ... Magnetization is also known as magnet polarization.

Answer:

You've probably noticed that static electricity is more noticeable during the winter months. This is because the air is very dry. In the summer, the humidity and moisture in the air help electrons move more quickly, which makes it harder to build up a big static charge.

Explanation:

Answer:

\(M= 0.4 Am^2\)

Explanation:

From the question we are told that:

Number of turns  \(N=5\)\(N=5\)

Conductor each with side length \(L=0.2m\)

Current \(I=2A\)

Magnetic field  \(B=50.0T\)

Generally the equation for the total magnetic moment  M is mathematically given by

\(M = current * area\)

\(M= I * A\)

\(M = 2 * (5* 0.2*0.2)\)  

\(M = 2 * 0.2\)

\(M= 0.4 Am^2\)

A great strength of correlational research is the -fact that it occurs in real-world settings.

Correlational research is a form of non-experimental research methodology that employs statistical analysis to investigate the link between two variables. The impacts of unrelated factors on the variables under inquiry are not investigated by correlational research designs.

Characteristics-

1.Non-experiment: It implies that in order to support or refute a theory, researchers do not necessarily need to modify variables using a scientific technique.

2.Backward-looking: Correlational research solely considers historical information and keeps track of past events. It is measured and used by researchers to identify historical patterns between two variables.

3.Dynamic: Correlational research's patterns between two variables are never static and are constantly evolving. Due to numerous causes, two variables with a history of negative correlation studies may eventually show a positive correlation relationship.

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As a star's temperature increases, it becomes hotter. Its color changes from orange, through yellow, to white.

Answer:

Work, in physics, measure of energy transfer that occurs when an object is moved over a distance by an external force at least part of which is applied in the direction of the displacement.To express this concept mathematically, the work W is equal to the force f times the distance d, or W = fd.

As per the given values, and uncertainty of the speedometer the actual speed could be 61.33 km/h.

Uncertainty = 2.0 km/h

Measured value = 90 km/h

Calculating the Percent uncertainty -

= (Uncertainty / Measured value) x 100

= (2.0 / 90 ) x 100

= 2.22%

Now, assuming the speedometer has the same percent uncertainty at 60 km/h, this percent uncertainty can be used to determine the range of speeds.

Percent uncertainty = 2.22%

Measured value = 60 km/h

Calculating the range -

= (Percent uncertainty / 100) x Measured value

= (2.22% / 100) x 60

= 1.33

Calculating the Total speed -

= 60 + 1.33

= 61.33

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Complete Question:

If your speedometer has an uncertainty of 2.0 km/h at a speed of 90 km/h ,what is the percent uncertainty? (b) If it has the same percent uncertainty when it reads 60 km/h , what is the range of speeds you could be going?

Answer:

bhai what is yhis? i dont understand

Given :

A 13.3 kg box sliding across the ground  decelerates at 2.42 m/s².

To Find :

The coefficient of kinetic friction.

Solution :

Frictional force applied to the box is :

\(f = ma\)    ....1)

Also, force of friction is given by :

\(f = \mu mg\)  ....2)

Equating equation 1) and 2), we get :

\(\mu mg = ma\\\\\mu = \dfrac{a}{g}\\\\\mu = \dfrac{2.42}{9.8}\\\\\mu = 0.247\)

Therefore, the coefficient of kinetic friction is 0.247 .

Answer:the magnitude of the hikers resultant displacement

Explanation:

Answer:

Explanation:

Newton's 2nd Law say that F = ma which is the sum of the forces acting on an object is equal to the object's mass times the acceleration at which it is moving. That means that the forces acting on this tree are F which is the Force the man needs to exert to move the tree, and f which is the force the tree is exerting in an effort to stay right where it is. That alters our 2nd Law equation to F - f = ma. BUT if the tree isn't moving, the acceleration is 0, making the whole right side of that equation go to 0. That means that F = f. Phew! Let's do that.

f = μ\(F_n\) where f is the frictional force, μ is the coefficient of static friction, and \(F_n\) is the weight of the object, which are given as 670 N. Filling in:

f = .5(670) so

f = 335 N (that is not using the rules of significant digits properly, but if you use them properly, the answer is not one of the choices, so...)

C is the one you want.

Answer:

300km

Explanation:

To find the total distance traveled within the given time frame, we need to known that distance is the product speed and time;

  Distance  = Speed x time

For the first lap:

   Distance  = 100km/hr x 3hr = 300km

For the second lap;

     Distance  = 150km/hr x 2  = 300km

Distance  = 300km + 300km

So;

Distance = 300km

The statement that best describes the energy of the roller coaster as it slows down while traveling to the top of the coaster is (C) The cart loses kinetic energy and gains potential energy.

A fantastic illustration of how energy may change from kinetic energy to gravitational potential energy and vice versa is a roller coaster car going down a path. Consider three roller coaster points that are each at a different height from the ground. The whole kinetic and potential energy can be taken to be conserved if we ignore all frictional and drag forces and concentrate solely on the conservative forces acting on the roller coaster car. It follows that energy only changes its state from one form to another.

The roller coaster car will have a maximum amount of kinetic energy when it reaches the bottom because all of the gravitational potential energy has been converted to kinetic energy.

The object has a maximum amount of gravitational potential energy and no kinetic energy at the top of the roller coaster (assumed there is no velocity). The gravitational potential energy of the object decreases and the kinetic energy rises as it starts to descend to the bottom.

Hence,

            As the cart reaches the top, it slows down because it loses kinetic energy and gains potential energy.

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Explanation:

because when diffusion occurs it is as a result of the particles moving around freely in open space

The fact that matter is composed of particles and that these particles are incredibly tiny and have space between them supports the theory that matter is composed of particles.

The mixing of materials is caused by the free movement of their particles is known as diffusion.

Even with a strong microscope, the substance is composed of microscopic particles that cannot be seen. The matter is anything that is both mass- and space-having. Small particles make up matter.

Because the particle's unrestricted movement in an open environment causes diffusion to happen.

Hence, diffusion supports the idea that matter is made up of particles.​

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The choice that correctly pairs a scientist with their work on atoms and elements is Thompson-the plum pudding model

Dalton's work on atoms and elements is called the atomic theory of matter. The quantum theory of the atom was proposed by Erwin Schrödinger. Bohr's work on atoms and elements is called planetary model / Bohr's atomic model. The uncertainty of particles in an atom is the work of Werner Heisenberg. Rutherford's work on atoms and elements is called Rutherford model of the atom or Rutherford atomic model.

The plum pudding model was the atomic model of J J Thomson. It was proposed in 1900. It explains the inner structure of the atom. He also discovered electrons during a cathode ray tube experiment in 1897.

Therefore, the choice that correctly pairs a scientist with their work on atoms and elements is Thompson-the plum pudding model

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The pH of the solution is approximately 4.195, which corresponds to answer choice E.

The benzoic acid and sodium benzoate will react to form a buffer solution. We can use the Henderson-Hasselbalch equation to determine the pH of the buffer:

pH = pKa + log([A-]/[HA])

where pKa is the dissociation constant of benzoic acid (6.30 × \(10^{-5\)), [A-] is the concentration of benzoate ions, and [HA] is the concentration of benzoic acid.

To calculate the concentrations of [A-] and [HA], we need to use the stoichiometry of the reaction. The reaction is:

\(C_6H_5COOH + NaC_6H_5COO\) →\(C_6H_5COO^- + Na^+ + H_2O\)

From this equation, we can see that one mole of benzoic acid reacts with one mole of sodium benzoate to form one mole of benzoate ions and one mole of water. Therefore, the concentration of benzoate ions is:

[A-] = 0.300 mol / 1.00 L = 0.300 M

The concentration of benzoic acid is:

[HA] = 0.150 mol / 1.00 L = 0.150 M

Now we can substitute these values into the Henderson-Hasselbalch equation:

pH = pKa + log([A-]/[HA])

pH = -log(6.30 × \(10^{-5\)) + log(0.300/0.150)

pH = 4.195

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The speed of the body is 10 m/s.

Given that the body has a mass of 2 kg and a kinetic energy of 100 J, we can rearrange the formula to solve for v:

The formula for kinetic energy is:

KE = 1/2 * m * \(v^2\)

where KE is the kinetic energy, m is the mass of the body, and v is its velocity or speed.

v = sqrt(2 * KE / m)

Plugging in the values, we get:

v = sqrt(2 * 100 J / 2 kg)

v = sqrt(100)

v = 10 m/s

Kinetic energy is the energy an object possesses due to its motion. It is defined as one-half of the object's mass multiplied by the square of its velocity. Kinetic energy is a scalar quantity, meaning it only has a magnitude and no direction. The faster an object moves or the more massive it is, the greater its kinetic energy. When an object collides with another object, some or all of its kinetic energy can be transferred to the other object.

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Answer:

The formula for calculating the length change due to a temperature change is:

ΔL = α * L * ΔT

where α is the linear expansivity, L is the original length of the bar, and ΔT is the change in temperature.

So in this case, the length change of each bar would be:

ΔL = 1.0 x 10^-5 K^-1 * 3m * (40°C - 28°C)

Converting the temperatures to Kelvin (28°C = 28 + 273 = 301 K and 40°C = 40 + 273 = 313 K), we get:

ΔL = 1.0 x 10^-5 K^-1 * 3m * (313 K - 301 K)

ΔL = 1.0 x 10^-5 * 3 * 12

ΔL = 0.00036 m

So each bar will increase in length by approximately 0.00036 meters when the temperature changes from 28°C to 40°C. To allow for this increase in length, a safety gap of 0.00036 meters should be left between each bar.

The highway would be directed at an angle of 23.3 degrees with respect to due west.

To find the shortest length of highway between the two towns, we need to use the Pythagorean theorem. Let's draw a diagram:

  A

 /|

/ |

/  |

  |

  |   x

  |  /

  | /

  |/

  B

A represents the town that is 32.0 km south and 72.0 km west of town B. We can see that the distance between the two towns, x, is the hypotenuse of a right triangle with sides of length 32.0 km and 72.0 km.

Using the Pythagorean theorem, we can find x:

x = sqrt((32.0 km)^2 + (72.0 km)^2)

= 78.0 km

So the shortest length of highway that can be built between the two towns is 78.0 km.

Now, let's find the angle that this highway would be directed with respect to due west. We can use trigonometry for this. The angle we're looking for is the angle between the line connecting the two towns and due west.

  A

 /|

/ |

/  |  θ

  |

  |   x

  |  /

  | /

  |/

  B

We can see that tan(θ) = (32.0 km) / (72.0 km) = 0.444. Taking the inverse tangent of both sides, we get:

θ = \(tan^{-1}(0.444)\)

= 23.3 degrees

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If the cable were given an additional full wrap around the pulley at c and the worker can apply a force of 50 lb to the cable, this would effectively double the tension in the cable. Therefore, the tension in the cable would be 2(400 lb) = 800 lb.

To determine the largest weight that may be lifted at d, we need to consider the forces acting on the system. There are two tension forces acting on the cable, one pulling up from d and one pulling down from the weight at c. There is also the weight of the load pulling down.

Using the principle of equilibrium, we can set the sum of the forces in the vertical direction equal to zero. This gives us:

800 lb - Td - W = 0

where Td is the tension force pulling up from d and W is the weight of the load.

Solving for W, we get:

W = 800 lb - Td

To determine the largest weight that can be lifted, we need to find the maximum tension force that the worker can apply to the cable. Since the worker can apply a force of 50 lb, the maximum tension force would be 50 lb multiplied by the number of cables wraps around the pulley at c. Since there is now one additional wrap, the maximum tension force would be:

50 lb x 2 = 100 lb

Therefore, the largest weight that can be lifted is:

W = 800 lb - Td = 800 lb - 100 lb = 700 lb

So the largest weight that can be lifted at d is 700 lb.

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Answer:

1609.3

Explanation: