A heat engine operates between 30 C and 320 C. If this engine extracts a total energy of 800 MJ from fuel, then how many MJ of energy could be used as useful mechanical energy? Remember that e = 1 - T(low)/T(high), where T is in Kelvin (= Celsius + 273). 391MJ 156 MJ 235MJ 725 MJ 435 MJ

Answer:

probaby not

Explanation:

you might get thrown in jail tho

The gyroscope slows from an initial rate of 29.6 rad/s at an angular acceleration of 0.54 rad/s2.

Part (a) How long does it take to come to rest in seconds? t = ?

The angular deceleration is given by the negative value of the angular acceleration; thus:

α = -0.54 rad/s2

The initial velocity is given by the value,

ω1 = 29.6 rad/s.

The final velocity, ω2 = 0 rad/s.

The formula for angular acceleration is:

ω2 = ω1 + αt,

where:

ω1 = 29.6 rad/s

ω2 = 0 rad/s

α = -0.54 rad/s

2t = ?

Substitute the values in the formula above and solve for t.

0 = 29.6 - 0.54tt = 29.6/0.54t = 54.8 seconds

Therefore, it takes 54.8 seconds to come to rest in seconds.

Part (b)The number of revolutions that the gyroscope makes before stopping is given by:

n = (ω1/2π)t,

where:

ω1 = 29.6 rad/s

t = 54.8 s

n = ?

Substitute the values in the formula above and solve for n:

n = (29.6/2π)(54.8) revolutions

n ≈ 277.4

Therefore, the number of revolutions that the gyroscope makes before stopping is approximately 277.4 revolutions.

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Answer:

hmmmmm

Explanation:

I am gonna say D.

if I am right plz give me a brainliest

Answer:

Hee answer is B

Explanation:

____________.

The interval on the position graph that is the steepest is the interval when the student is moving towards the detector at a constant velocity until he returns to his original position.

This is because the slope of the graph represents the velocity of the student, and the steeper the slope, the greater the velocity. Since it takes less time for the student to return to his original position from the point where he stopped than it did to reach the stopping point, this means that the student is moving at a greater velocity during this interval, and therefore the slope of the graph will be steeper.

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To show that a free electron cannot absorb a photon, we can examine the conservation of energy and momentum during the interaction.

To show that a free electron cannot absorb a photon, we can examine the conservation of energy and momentum during the interaction.

The conservation of energy states that the total energy before and after the interaction must remain constant. The energy of a photon is given by E = hf, where h is Planck's constant and f is the frequency of the photon. The energy of a free electron is given by E = p² / (2m), where p is the momentum of the electron and m is its mass.

Let's assume that the free electron absorbs a photon. In this case, the energy of the electron before absorption is E_initial = p_initial² / (2m), and after absorption, it becomes E_final = p_final² / (2m) + hf.

Now let's consider the conservation of momentum. The momentum of a photon is given by p = hf / c, where c is the speed of light. The initial momentum of the electron is p_initial, and after absorption, it becomes p_final.

Applying conservation of energy:

E_initial = E_final

p_initial² / (2m) = p_final² / (2m) + hf

Applying conservation of momentum:

p_initial = p_final + p_photon

p_initial = p_final + hf / c

Substituting the expression for p_initial in terms of p_final and hf:

p_final + hf / c = p_final / (2m) + hf

Simplifying the equation:

2mhf + 2mcp_final = \(c^{2p-final^{2}\)  + 2mhf  

Canceling out common terms:

2mcp_final = \(c^{2p-final^{2}\)

Simplifying further and Dividing by c:

2m = c p_final

Now, if we examine the equation, we see that the left side (2m) is a constant determined by the mass of the electron, while the right side (c p_final) depends on the momentum of the electron. Since the left side is a constant and the right side depends on p_final, there is no possible value of p_final that satisfies this equation. Therefore, we can conclude that a free electron cannot absorb a photon while conserving energy and momentum.

This result is consistent with the principles of quantum mechanics, where the absorption or emission of a photon by an electron is governed by quantum transitions between energy levels, such as those occurring in atoms or solid-state systems.

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Answer:

c

Explanation:

Answer:

W 1920 N

Explanation:

200kg at a location where g=9.6m/s^2

Water can carry waves, glass can transmit light, and walls can carry sound. The medium is the substance that a wave travels through. A pulse is a single disturbance that moves through a medium.

What is a single disturbance that travels through a medium from point to point?

An isolated disturbance called a pulse travels through a medium from one point to the next.

A recurring disruption in a medium is what?

A wave is an energetic periodic disturbance that propagates outward from a source. Waves can be either mechanical or electromagnetic. Mechanical. Examples -- sound waves, water waves, etc. require a medium for transfer; vacuums cannot be used for transfer.

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The time period (T) of the sinusoidal voltage is 2 milliseconds.

The time period (T) of a sinusoidal waveform is the time it takes for one complete cycle of the waveform to occur. It is the reciprocal of the frequency (f) of the waveform. To calculate the time period, we can use the formula:

T = 1/f

In this case, the frequency is given as 500 rads. However, it's important to note that rads is not a unit of frequency, but rather a unit for measuring angles (radians). To convert rads to Hz (hertz), which is the standard unit of frequency, we need to divide the given value by 2π.

f (Hz) = (500 rads) / (2π) ≈ 79.577 Hz

Now we can calculate the time period:

T = 1 / f

T = 1 / 79.577 Hz ≈ 0.0126 seconds

To convert the time period to milliseconds, we multiply by 1000:

T ≈ 0.0126 seconds x 1000 = 12.6 milliseconds

Therefore, the time period (T) of the sinusoidal voltage is approximately 2 milliseconds.

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Part 1: The number of pathways in a circuit determines the possible routes for electric current to flow.

There are maximum of five pathways in this circuit, depending on its complexity and the arrangement of components.

Part 2: Determining whether the circuit is series or parallel requires more information.

In a series circuit, components are connected in a single path, and the current flows through each component sequentially.

If the circuit has only one pathway (zero or one pathway), it suggests a series circuit.

However, if the circuit has multiple pathways (two or more pathways), it indicates a parallel circuit.

To conclusively determine the circuit's nature, we need to analyze the circuit diagram or obtain additional details regarding the component connections and their interactions.

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When going from a 5 to a 6 on the Richter scale, there is a tenfold increase in the amplitude of seismic waves.

The Richter scale is used to determine the intensity or magnitude of an earthquake.

The scale is logarithmic, meaning that each increase of one on the scale represents a tenfold increase in seismic wave amplitude.

The amount of energy released by an earthquake is used to determine the magnitude of an earthquake. The Richter Scale ranges from 1 to 10, with each point representing a tenfold increase in energy.

Seismic waves are recorded by seismometers, and the data collected is then used to calculate the magnitude of an earthquake

When going from a 5 to a 6 on the Richter scale, the increase in amplitude of seismic waves is approximately 10 times larger. This means that the amplitude of the seismic waves at a magnitude of 6 would be about 10 times greater than the amplitude of the seismic waves at a magnitude of 5.

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There are many reasons actually...

◇ Clayey soil is easy to mould than the other soils.

The other soils (like sandy soil & loamy soil) are grainy or dry in nature & cannot be moulded. In the ancient times, when technology & the know-hows were still not introduced, people used clayey soul to make earthern pots to store stuff. This practice still continues even today.

◇ It keeps water cool.

Ever wondered why water stored in the earthenware remains cool even on a sunny day? It's because the heat required for evaporation is taken from water inside the pot & thus it cools the water stored inside.

◇ Clayey soil is also moist, durable, more plastic like & easy to retain making it ideal for potters to make earthenware.

__________

Clay soil is used to make earthenwares because, clay can be easily molded to desired sizes and shapes. Clay absorbs water moiety and make the pot very cool inside.

Clay is a type of soil made by the sedimentation process near water resources.  They are rich in minerals. Clay is rich in silicates and intermolecular force in the soil is comparatively less and can be easily molded any shape and size.

When clay is fired to a high enough temperature, the glass-forming materials in the ceramic form a liquid glass. This glass bridges the gaps between the clay particles. As the pottery cools at the end of the firing process, the glass between the clay particles solidifies again.

Clay pots make the water cooler inside. Hence, clay is used to make earthen wares.

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The minimum possible magnitude of the electric force acting on each particle is approximately 2.307 × 10⁻⁹ Newtons.

To find the minimum possible magnitude of the electric force acting on each particle, we need to determine the minimum possible charge for the particles and then calculate the force using Coulomb's law.

Let's assume the minimum possible charge for each particle is q, and the distance between them is 1 cm (which is equivalent to 0.01 m).

Coulomb's law states that the electric force between two charged particles is given by:

F = (k * |q1 * q2|) / r²

where F is the force, k is the electrostatic constant (k ≈ 8.988 × 10⁹ N m²/C²), q1 and q2 are the charges on the particles, and r is the distance between them.

In this case, both particles have the same charge q, so we can rewrite Coulomb's law as:

F = (k * q²) / r²

To find the minimum possible magnitude of the force, we need to minimize the charge q.

The magnitude of the charge cannot be negative, so q must be a non-negative value.

As we're looking for the minimum magnitude of the force, we can consider the case where q is zero. However, in that case, both particles would be uncharged, and there would be no force between them.

Therefore, the minimum possible magnitude of the electric force acting on each particle would occur when the charge is infinitesimally small, but still non-zero.

In practice, the smallest measurable charge is the charge of an electron, which is approximately 1.602 × 10⁻¹⁹ C.

Substituting this value into the equation, we have:

F = (k * (1.602 × 10⁻¹⁹ )²) / (0.01)²

Calculating this, we find:

F ≈ 2.307 × 10⁻⁹ N

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Answer:

F = M g       gravitational force on M

M g = G M m / R^2

g = G m / R^2        where R is radius of earth and m the mass

g = 6.67E-11 N-m^2/ kg^2 * 5.98E24 kg / (6.37E6 m)^2

g = 6.67 * 5.98 / (6.37)^2 * 10 = 9.83 m/s^2

Newton's second law allows to find the result for the friction coefficient of the street is:

Newton's second law establishes a relationship between the net force, the mass and the acceleration of the body.

           ∑ F = m a

Where bold indicates vectors, m is to mass and acceleration.

In the attached we see a free body diagram, it is a diagram of the forces without the details of the body, the x-axis is parallel to plane also shown with the positive in the direction of movement, going down the plane and the y-axis perpendicular to the plane.

Let's use trigonometry to break down the weight.

        Sin θ = \(\frac{W_x}{W}\)  

        cos θ = \(\frac{W_y}{W}\) / W

        Wₓ = W sin θ

         \(W_y\)  = W cos θ

We write Newton's second law for each axis.

y-axis

         N- \(W_y\)  = 0

         N = mg cos θ

x-axis

        Wₓ - fr = ma

Since they indicate that the body goes down at a constant speed, the acceleration is zero.

         W sin θ = fr

The friction force is the macroscopic representation of the interactions between the two surfaces and the formula.

         fr = μ N

we substitute.

          fr = μ mg cos θ

         mg sin θ = μ cos θ  

        μ = tan θ

Let's calculate.

         μ = tan 38.0

         μ = 0.78

In conclusion using Newton's second law we can find the results for the friction coefficient of the street is:

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import numpy as np:

random_vector = np.random.rand(15)

modified_vector = np.where(random_vector == np.max(random_vector), -1, random_vector)

print("Original Array:", random_vector)

print("Modified Array:", modified_vector)

A NumPy program that creates a random vector of size 15, replaces the maximum value with -1, and prints both the original array and the modified array:

```python

import numpy as np

# Create a random vector of size 15

random_vector = np.random.rand(15)

# Find the maximum value in the vector

max_value = np.max(random_vector)

# Replace the maximum value with -1

modified_vector = np.where(random_vector == max_value, -1, random_vector)

# Print the original and modified arrays

print("Original Array:")

print(random_vector)

print("\nModified Array:")

print(modified_vector)

```

When you run this program, it will generate a random vector of size 15 and display the original array. Then, it will replace the maximum value in the array with -1 and display the modified array.

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Answer:

500000 approx........

...

Answer:

We define a vector as an object with a length and a direction.With no length, the zero vector is not pointing in any particular direction, so it has an undefined direction.

Explanation:

Pls mark me brainliest :)

Answer: The Torro Hailstorm Intensity Scale

Explanation:

Answer:

Explanation:

As per the given information, 18(O) is struck by a proton, and 18(F) and another particle are produced. The reaction has a Q value of -2.453 MeV, and the atomic mass of 18(O) is 17.999 160 u.

We have to find the atomic mass of 18(F). The Q value of a nuclear reaction can be given as Q = (Mi - Mf - Mp) × c²WhereQ = Q

value of the nuclear reaction = initial massMf = final massMp = mass of the projectile = speed of light

The Q value of the given nuclear reaction is -2.453 MeV. Since we know the initial mass (Mi) and the mass of the projectile (Mp), we can calculate the final mass (Mf) as follows: Mf = Mi - Mp - (Q / c²)Now, let's calculate the final mass of 18(F).

Initial mass (Mi) = mass of 18(O) = 17.999 160 UMass of the projectile (Mp) = mass of a proton = 1.007 825 uQ value (Q) = -2.453 MeVSpeed of light (c) = 2.998 × 10⁸ m/sMf = 17.999 160 u - 1.007 825 u - (-2.453 MeV / (2.998 × 10⁸ m/s)²)Mf = 18.000 674 therefore, the atomic mass of 18(F) is 18.000 674 u.

Answer:

Losing weight?

Explanation:

That would make sense because thats the only thing mentioned

Answer:

He started getting a full night of restful sleep.

Explanation:

hope 04.01 quizlet

When one stationary object is replaced by another stationary object, the change between the two objects maybe perceived as the movement of a single object. This creates an optical illusion.

An optical illusion is defined as a visual phenomenon in which the information gathered by the eye is processed in a way that results in a false perception of reality or the visual impression of seeing something that is not present or incorrectly perceiving it. It is a misinterpretation of a visual stimulus caused by the brain's ability to misjudge sensory information.

It can happen when visual information is processed in the brain, and it can create an impression of movement that isn't there. This phenomenon occurs when an object is moving or when the eyes are moving around, but it can also happen when the object being looked at is stationary.

When one stationary object is replaced by another stationary object, the change between the two objects maybe perceived as the movement of a single object. This creates an optical illusion because the visual system is misled into thinking that the object is moving.

The brain continues to process visual information even when the object is stationary, creating the impression that the object is moving. This is why an optical illusion can be used to make a stationary object appear to move or to make a moving object appear to be stationary.

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Answer:

B) Walker 2 was at rest for the first five seconds. D) Walker 2 moved faster overall than walker 1 by the end. E) Both walkers had reached the same distance at fifteen seconds.

Explanation:

I did the UsaTestPrep

Answer:

motion is the act of changing location or position

Answer:

Motion is generally defined as an increase in distance with respect to time.

Answer:

Answer:

healthy diet

Explanation:

Exercise and a healthy diet are the two things people do to stay healthy