be sure to answer all parts. how much heat is required to evaporate 104.2 g of water at 100.0°c? the molar heat of vaporization for water is 4.07 × 104 j/mol.

We may answer this problem using the centripetal force formula, F = (mv2)/r, where F is the centripetal force, m is the object's mass, v is its velocity, and r is the radius of the circle.

In this situation, we suppose that the rock's mass remains constant. When the string is 2.64 m long and the rock is moving at 21.6 m/s, the tension force in the string is: F = (m x v2)/r = (m x 21.62)/2.64 = 322.47 N The radius of the circle falls to 1.29 m as the string is drawn in, and the velocity of the rock increases to 48.1 m/s. The force necessary to keep the rock rolling in a circle. at this speed is: F = (m x 48.1^2) / 1.29 = 1727.73 N Because the string breaks at this point, its breaking strength equals the centripetal force needed, which is 1727.73 N. As a result, the string's breaking strength is 1727.73 N.

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ANSWER: D. Rule of Law

is the answer

d. rule of law

rule of law .

The magnitude of the acceleration of the elevator is 1.75 m/s^2, and it is directed downwards.

The difference between the reading on the scale when the student is stationary and when the elevator is moving is equal to the net force acting on the student. In this case, the scale reads 450N when the elevator is moving: 450N - 550N = -100N .

Using Newton's second law, we can calculate the acceleration of the elevator as follows: Net force = mass x acceleration

Acceleration = (-100N) / (550N / 9.81m/s^2) = -1.75 m/s^2

The negative sign indicates that the acceleration is directed downwards, in the opposite direction to the force of gravity.

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Answer:

distance and the amount of the force

Explanation:

moment = f x d

Answer:

The spark from the primer ignites the gunpowder. Gas converted from the burning powder rapidly expands in the cartridge. The expanding gas forces the bullet out of the cartridge and down the barrel with great speed. The rifling in the barrel causes the bullet to spin as it travels out of the barrel.

Explanation:

The system described by the transfer function G(s) = -co² s² + 2a + w², with a damping ratio of 1.3 and a natural frequency of 0.5, has an overdamped unit step response. So, the correct option is (E)

The transfer function of the system is given as G(s) = -co² s² + 2a + w², where co represents the damping ratio, a represents an arbitrary constant, and w represents the natural frequency of the system. We are given that the natural frequency is 0.5 and the damping ratio is 1.3.

To determine the type of unit step response, we need to analyze the damping ratio (co) in relation to the critical damping value (co_critical).

The critical damping ratio (co_critical) is defined as the value where the system is on the threshold between being overdamped and underdamped. It is given by the formula co_critical = 2 * sqrt(a * w²).

In our case, the natural frequency (w) is 0.5, so we can calculate co_critical as follows: co_critical = 2 * sqrt(a * 0.5²).

Since the damping ratio (co) is given as 1.3, we can compare it with co_critical to determine the type of unit step response.

If co > co_critical, the system is considered overdamped (Option E).

If co = co_critical, the system is considered critically damped (Option D).

If co < co_critical, the system is considered underdamped (Option C).

Based on the given values, we can determine that the system is overdamped (Option E) because the damping ratio (1.3) is greater than the critical damping ratio.

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True. The larger the parallax shift, the closer an object is to us. Parallax is used to measure distances in astronomy.

The larger the parallax shift, the closer an object is to us. Parallax is the apparent shift in the position of an object when viewed from different vantage points. In astronomy, it is used to measure the distance to nearby stars. The parallax shift is inversely proportional to the distance to the object. Therefore, a larger parallax shift indicates that the object is closer to us, while a smaller parallax shift suggests that the object is farther away.

In astronomy, parallax is the apparent shift in the position of an object when observed from different locations. By measuring the angle of this shift, astronomers can calculate the object's distance. A larger parallax shift indicates a smaller distance, as the object appears to move more relative to background objects when observed from different positions.

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The rocket engine that fires against the direction a spacecraft is headed so the spacecraft slows down is called Retro engine.

Spacecraft are the space automobiles that might be capable of flying out of doors of the Earth’s ecosystem in the area. They offer us a method of transportation from the Earth to the area and objects in it. There may be numerous spacecraft that are familiar to most of people e.g. Apollo 11 which took Neil Armstrong and his group to the Moon.

Crewed Spacecraft – Crewed spacecraft are the ones that carry people to the area. There have been several crewed spacecraft to the area consisting of Vostok 1 – the first crewed spacecraft in records dispatched by way of the United States of America.

Earth-Orbit Satellites – all of the satellites, which orbit across the Earth, fall in this class. The maximum tremendous satellite in orbit on the Earth is Hubble Telescope.

Space Probe – these are unmanned spacecraft that might be fitted with medical instruments for exploring objects in space e.g. planets, Moon, and solar.

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Zorch must push with the force of 1.8 x 10^6 N for 62.5 seconds to accomplish his goal of moving the moon out of Earth's orbit.

To calculate the time Zorch must push with the given force, we use the formula: Work = Force x Distance.

The work required to move the moon out of Earth's orbit is the gravitational potential energy difference between the moon and Earth. This is calculated as:

Work = G x Mm x Me / R

where G is the gravitational constant, Mm is the mass of the moon, Me is the mass of Earth, and R is the distance between the centers of the two bodies.

Solving for R, we get R = 3.83 x 10^8 m.

The force required to move the moon is the gravitational force between the moon and Earth, which is calculated as:

Force = G x Mm x Me / R^2

Substituting the values we get, Force = 1.8 x 10^6 N.

Finally, using the formula Time = Work / Power, with Power = Force x Velocity, and assuming constant velocity, we get the time as 62.5 seconds. Therefore, Zorch must push with a force of 1.8 x 10^6 N for 62.5 seconds to accomplish his goal.

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Answer:

it's the option c

Explanation:

as we know a= vf- vi / t

it means change in velocity divided by time

at rest it's means 0 velocity it's our intial velocity

and 23.5 m/s is our final velocity as it stop their.

23.5 - 0/ 4.32 = 5.44 m/s

Hope it helps

The ball  that is thrown into the air with a velocity of 44 ft/s, its height in feet t seconds later is given by the following equation:

y=44 ft/s * t - (32.17 ft/s² * t²/2)

The height in (ft) at a time (t) of a body that has been thrown with a certain velocity and is in vertical motion is given by the following equation:

y = vi * t - (g* t²/2)

Where:

Information about the problem:

Applying the height formula we get:

y = vi * t - (g* t²/2)

y = 44 ft/s * t - (32.17 ft/s² * t²/2)

It is the movement described by an object that has been thrown vertically upwards in which the height and the effect of the force of the earth's gravity on the thrown object are considered.

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Answer: t=10s

Explanation:

v=u+at

⟹0=30+(−3)×t

⟹0=30−3t

⟹3t=30

⟹t=303

⟹t=10s.

Given the circuit diagram below:The given circuit diagram comprises an operational amplifier, 2 input resistors R1 and R2, a feedback resistor Rf, and a switch. To find the steady-state value, first, the transfer function is to be calculated. It is observed that the non-inverting terminal of the operational amplifier is grounded.

Now, using the voltage divider rule, the output voltage of the voltage divider network at the inverting terminal of the operational amplifier is given by:\($$v_i=\frac{R_1}{R_1+R_2}v_{e}$$\)Since, the operational amplifier is assumed to be in the ideal condition, the current entering the inverting terminal is negligible.

Therefore, the current flowing through the feedback resistor Rf is the sum of the currents flowing through R1 and R2. Hence, the expression for output voltage Vout is given by:\($$V_{out}=-\frac{R_f}{R_1+R_2}v_{e}$$\)To determine the steady-state value, we assume that the switch has been closed for a long time, and as a result, the capacitor is fully charged. Therefore, the capacitor acts as an open circuit and can be removed from the circuit diagram.

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As the surface of space-time stretches and expands, the distance between galaxies increases. However, the galaxies themselves do not actually move, as they are held in place by gravitational forces. This phenomenon is known as cosmic expansion, and it is caused by the presence of dark energy in the universe.

Despite the fact that galaxies appear to be moving away from one another, they are still held together in clusters by gravity, and they continue to interact with one another through various forms of radiation and gravitational waves.

When a galaxy emits light, it has a specific wavelength and color. As the universe expands, the space between galaxies also stretches, causing the light's wavelength to increase. This process, known as cosmological redshift, results in the light shifting towards the red end of the electromagnetic spectrum, making distant sources appear reddened.

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Answer:

sequence

Explanation:

sequences are the way in which things are ordered, for example: 1, 2, 3, 4 is a sequence:)

The name given to it is "terminal velocity".

In reality, it isn't a velocity, and it doesn't happen in free-fall.

Go figure.

Answer:

162,500

Explanation:

P=F(t)

32500=F(2)

162,500

The force exerted by the fuel on the shutter will be "162500 N". To understand the calculation, check below.

According to the question,

Change in momentum, ΔP = 325,000 kg.m/s

Time, Δt = 2 sec

Mass = 13,000 kg

We know the relation,

→ Force, F = \(\frac{dP}{dt}\) or,

                 = \(\frac{\Delta P}{\Delta t}\)

                 = \(\frac{Change \ in \ momentum}{Time}\)

By substituting the values,

                 = \(\frac{325000}{2}\)

                 = 162500 N

Thus the above answer is correct.

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Complete question :

A pump is required to lift a mass of 790 of water per minute from a well of depth 13.2 and eject it with a speed of 17.4 .

A) How much work is done per minute in lifting the water?

B) How much in giving the water the kinetic energy it has when ejected?

Answer:

102194.4 Joules ;

119590.2 Joules ;

1703.24 J/s

Explanation:

Given that :

Mass, m of water = 790 kg

Depth of well, d = 13.2

Speed, V = 17.4 m/s

The workdone, W is given by :

W = Force * distance

Force = mass * acceleration due to gravity, g

Hence,

W = 790kg * 9.8m/s * 13.2m = 102194.4 Joules

The Kinetic energy :

K. E = 0.5mv²

K.E = 0.5 * 790 * 17.4²

K.E = 119590.2 Joules

A mass-containing crate must stop with a net effort of 24.63 joules.

When a physical influence called force is imparted to an item, the object accelerates in the direction the force was applied from. The amount of matter that makes up an object is expressed by its mass, which is expressed in kilograms. The rate at which an object's velocity along the same straight line as the unbalanced force changes is known as its acceleration.

Force and Mass

According to the question,

Mass, m = 72 kg

Speed, v = 1.89 m/s

Acceleration due to gravity, g = 9.8

We know,

The force, F = mg

By substituting the values,

       = 72×1.89

      = 136.08 N

By using Equation of motion,

v² = u² + 2gS

(1.89)² = 0 + 2ₓ 9.81 S

3.57 = 19.62 S

S = 3.57 / 19.62

S = 0.181 m

hence,

The work done (W) will be:

= F × S

= 136.08 ₓ 0.181

= 24.63 joule

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Answer:The first spacecraft which did not merely fly by a jovian (or giant) planet, but actually went into orbit around it for an extended period of time was option a, Galileo. The Galileo spacecraft was launched in 1989 and orbited Jupiter for almost eight years, from 1995 to 2003.

Explanation:

Explanation: It's really blurry and sideways

Explanation:

option D ) is correct the speaker explain a difficult decision he had to make

hi everyone comment

Answer:

Scientific theories are attempts to explain how events occur in the natural world.

Explanation:

A scientific theory is an explanation for a wide range of observations and phenomena that have been tested and supported by multiple lines of evidence. A theory is not based on a single piece of evidence, but rather on a collection of evidence that has been accumulated over time through careful observation and experimentation.

Scientific theories are based on facts, which are observations of events in the natural world. However, a theory goes beyond simply describing these events; it seeks to explain why and how they occur. For example, the theory of evolution explains how organisms have evolved over time through natural selection. It is based on a wide range of evidence, including observations of the fossil record, comparative anatomy, and molecular biology, among others.

Overall, scientific theories are important tools for understanding and explaining the natural world, and they are constantly being revised and updated as new evidence becomes available.

The statement "The idea of 'visible' and 'invisible' work is related to other hierarchical dichotomies in our culture about work, including 'valuable' and 'unvalued' work" is true.

Visible work refers to tasks that are easily seen and recognized, such as high-profile jobs in fields like business, law, or medicine. Invisible work, on the other hand, refers to tasks that are often unseen and undervalued, such as caregiving, domestic work, or service industry jobs.

This dichotomy is further perpetuated by the gendered division of labor, where women are often expected to perform invisible work while men are expected to perform visible work. This results in a devaluation of traditionally feminine jobs and reinforces gender inequalities in the workforce.

Furthermore, the value placed on certain types of work is often linked to the economic rewards and social status that accompany them. This creates a hierarchy of jobs where those in visible, high-status positions are paid more and afforded more respect than those in invisible, low-status positions.

In summary, the idea of visible and invisible work is related to other hierarchical dichotomies in our culture about work, including valuable and unvalued work. This perpetuates gender inequalities and creates a hierarchy of jobs based on economic rewards and social status.

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Complete Question:

The idea of "visible" and "invisible" work is related to other hierarchical dichotomies in our culture about work, including "valuable" and "unvalued" work. True or False.

Answer:In short yes in long

Explanation:yes all substances can exist in any of these three states. In addition to existing in one of the three states, matter can also undergo a change of state. A change of state occurs when matter is converted from one state to another state for example when a liquid is converted to a gas or a solid is converted to a liquid.

Answer:

Faraday’s first device, a motor, used electricity and magnetism to create motion.

Explanation:

just trust me on this one

Answer:

The force required to pull a wagon if 84 J of work are exerted to pull a wagon 7m is 12 Joules.

HOW TO CALCULATE WORK DONE:

Work done can be calculated by multiplying the force applied on an object by the distance traveled. That is;

Work done = Force × distance

Force = Work done ÷ distance

According to this question, the work done is 84J and the wagon was pulled to a distance of 7 metres. The force is calculated as follows:

Force = 84J ÷ 7m

Force = 12N.

Therefore, the force required to pull a wagon if 84 J of work are exerted to pull a wagon 7m is 12 Joules.

The cycle of water or H₂O evaporating from lake and other bodies of water forming clouds and rain back to the surface of the earth happens in hydrosphere and stratosphere.

Hydrosphere is defined as water that is on the earth including surface of the planet such as ocean, lake and ice, underground source of water such as groundwater, as well as moisture in the air. The water, also known as H₂O gets heated up by the sun, evaporates into the air forming clouds happen in the atmosphere of the earth, specifically stratosphere, where most of the clouds are forming. After the clouds can no longer hold the accumulation of vaporization of the water, it will eventually get released back into the earth in the form of rain or snow.

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