a cylindrical bar of metal having a diameter of 18.3 mm and a length of 205 mm is deformed elastically in tension with a force of 54100 n. given that the elastic modulus and poisson's ratio of the metal are 64.6 gpa and 0.33, respectively, determine the following: (a) the amount by which this specimen will elongate in the direction of the applied stress. (b) the change in diameter of the specimen. indicate an increase in diameter with a positive number and a decrease with a negative number.

Answer:

D: tipping over dominoes

Explanation:

tipping over dominoes makes a wave-like movement

Answer:

the answer is D. just got it right 4/19/22

Explanation:

Answer:

true

Explanation:

hope this helped!

Answer:

true :)

Explanation:

Answer:

150

Explanation:

work done = constant force x distance moved in the direction of force

W = F x S

(UNITS: J = N x m)

50 x 3 = 150

Answer:

The power rating of the coffee maker is 1.4 kW, which means that it uses 1.4 kilowatts of power when it is in operation. To find out how much energy it will transfer every second, we can use the formula:

Energy transferred = Power × Time

Since we want to know the energy transferred every second, we can set the time to 1 second. Therefore:

Energy transferred per second = Power × 1 second

Energy transferred per second = 1.4 kW × 1 second

We can simplify this by converting the unit of power from kilowatts to watts:

Energy transferred per second = 1,400 watts × 1 second

Energy transferred per second = 1,400 joules

Therefore, the coffee maker will transfer 1,400 joules of energy every second.

Increasing the Kelvin temperature of the gas causes both the volume of the gas and the average kinetic energy of its molecules to increase.

The internal energy, which results from the molecular state of motion of matter, is an energy form that exists in every system. The internal energy is denoted by the letter U, and the measurement unit is the joule (J).

Rising temperature and changes in state or phase from solid to liquid and liquid to gas cause a rise in internal energy.

Hence, by increasing temperature, the average kinetic energy of its molecules increases.

Again from Charles's law on increasing temperature, volume of the ideal gas increases.

Hence, option (C) is correct.

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When using an articulated ladder in a single or extension ladder configuration, the proper angle of inclination should be 75°.

Selecting the Best Single or Extension Ladder size necessitates knowledge of the top support point's height. When climbing or descending the upper level ladder, the user must exercise caution to avoid tipping the ladder sideways or causing the ladder base to slide out.

Extension and Single Ladders should be erected as close to a pitch of 75 1/2 degrees from the horizontal as possible for maximum resistance to the bottom of the ladder sliding out, ladder strength, and climber balance. A simple rule for positioning the ladder at the proper angle is to place the base one-quarter the length of the ladder side rails away from the wall or upper support.

Hence, the a particular ladder should be inclined at angle 75° during the configuration of ladder.

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The depth of that point within the fluid, the pressure at the fluid's surface, the density of the fluid, and the weight of the fluid directly above that point.

Fluid is a state of matter that is characterized by its ability to move and take on the shape of its container. Fluids are composed of particles that are free to move about, and can also exist as a gas or a liquid. Fluids are an important part of everyday life, with applications ranging from transportation of goods to the operation of complex machinery. Fluids are also used to study the behavior of particles in motion, as well as to understand the properties of matter in general.

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Answer:

This is due to the gap in between the switch. So the applied energy is not converted to current even though the resistance is still there. Hence voltage will be there, where you applied it

Explanation:

The distance from point A to the point at which the patrolman overtakes the car is 2700 meters.

The distance from point A to the point at which the motorcycle patrolman overtakes the car is 2700 meters. Here's a step-by-step breakdown of the calculations:

Step 1:

Distance covered by the car in 2 seconds:

Distance = Speed * Time

Speed = 120 km/hr = (120/3600) m/s = (1/30) m/s

Time = 2 seconds

Distance = (1/30) m/s * 2 s = 2/30 km = (2/30) * 1000 m = 66.67 m

Step 2:

Calculating the time taken by the motorcycle patrolman to reach a speed of 150 km/h:

Using the equation v = u + at

Initial velocity (u) = 0 m/s

Final velocity (v) = 150 km/h = (150000/3600) m/s = (125/3) m/s

Acceleration (a) = 6 m/s^2

(125/3) m/s = 0 m/s + 6 m/s^2 * t

Solving for t:

t = (125/3) / 6 sec = (125/3) * (1/6) sec = 125/18 sec

Step 3:

Calculating the distance covered by the motorcycle patrolman in the first (125/18) seconds:

Using the equation s = ut + (1/2)at^2

Initial velocity (u) = 0 m/s

Acceleration (a) = 6 m/s^2

Time (t) = 125/18 sec

s = 0 * (125/18) + (1/2) * 6 * ((125/18)^2) = 1562.5/9 m

Step 4:

Calculating the time taken by the motorcycle patrolman to overtake the car:

Let the time taken be t sec

Speed of the car = 120 km/hr = (100/3) m/s

Distance covered by the car in time t = (100/3) m/s * t

Distance covered by the motorcycle patrolman in time t = Distance covered by the car in time t + Distance covered by the motorcycle patrolman in the first (125/18) sec

Time taken = (Distance to be covered) / (Speed of the motorcycle patrolman)

= (Distance covered by the motorcycle patrolman in time t - Distance covered by the motorcycle patrolman in the first (125/18) sec) / [(150000/3600) m/s]

= [(100/3) * t + 1562.5/9 - 1562.5/9] / [(150000/3600)] sec

= [(100/3) * t] / [(150000/3600)] sec

= (1/45) * t sec

The two times should be equal, so we can set up the equation:

(100/3) * t + 1562.5/9 = (1/45) * t

Solving for t:

(3200/45) * t + 1562.5/9 = t

[(3200/45) - (1/45)] * t = 1562.5/9

t = (1562.5 * 45) / (9 * 3199) sec

Step 5:

Distance from point A to the point at which the motorcycle patrolman overtakes the car:

Distance = Distance covered by the motorcycle patrolman in the first (125/18) sec + Distance covered by the motorcycle patrolman in time t

Distance = 1562.5

/9 + [(100/3) * t + 1562.5/9 - 1562.5/9] m

= 1562.5/9 + (100/3) * (1562.5 * 45) / (9 * 3199) m

= 1562.5/9 + 10425/3199 m

= [(1562.5 * 3199) + 10425] / 28791 m

= 2700 m

Therefore, the distance from point A to the point at which the motorcycle patrolman overtakes the car is 2700 meters.

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Answer:

its electrons

Explanation:

only electrons stays outside the nucleus unlike protons and neutrons and it has little to no mass

a. The total electric flux density for point P1(4, -3, 2) is X units.

b. The magnitude of the vector from point A to point D is Y units.

a. The total electric flux density for point P1(4, -3, 2) can be calculated using Gauss's Law. Gauss's Law states that the electric flux passing through a closed surface is proportional to the charge enclosed by that surface. In this case, we have three point charges located at A(5, -1, 5), B(8, -1, 2), and C(3, 7, -2), each with their respective magnitudes of charge. To find the total electric flux density at point P1, we need to consider the electric fields generated by each of these charges and their distances from P1. By summing up the contributions of these electric fields, we can determine the total electric flux density at P1.

b. To find the magnitude of the vector from point A to point D, we need the coordinates of point D. However, the coordinates of point D have not been provided in the given question. Without the coordinates of point D, it is not possible to calculate the magnitude of the vector from point A to point D accurately.

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Answer:

8.5 Ω

Explanation:

La resistencia de un material es directamente proporcional a su longitud e inversamente proporcional al área de la sección transversal.

La fórmula de la resistencia (R) viene dada por:

R = ρL/A

Donde ρ es la resistividad del material, L es la longitud del material y A es el área de la sección transversal del material.

Dado que:

L = 1 km = 1000 m, A = 2 mm² = 2 * 10⁻⁶ m², ρ (cobre) = 1.7 * 10⁻⁸ Ωm

Sustituyendo da:

R = 1,7 * 10⁻⁸ * 1000/2 * 10⁻⁶

R = 8.5 Ω

Placing a conductor increases the force between two charges because in the case of glass or other dielectrics, the effective distance between two charges rises as opposed to decreasing.

Each charge repels the other. When a positive charge and a negative charge interact, their forces move from the positive to the negative charge in the same manner. Because of this, opposing charges are drawn to one another: the ensuing forces and electric field created by two electrical charges with different polarities.

Coulomb listed the following characteristics of the electric force for charges in a resting state: Unlike charges attract each other whereas like charges repel one another. the two positive charges attract a negative charge, while negative charges repel one another.

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Stem-and-leaf plots are an excellent way to display data. The outliers in a stem-and-leaf plot are the observations that are located far away from the other observations.

Stem-and-leaf plots are excellent for displaying numerical data in an orderly manner. They assist in determining the minimum, maximum, and range of data and can assist in determining patterns and variations. They also provide an excellent visual representation of the distribution of data and are a fantastic tool for spotting outliers. Outliers are observations in a dataset that are considerably different from the other observations. They can be identified in stem-and-leaf plots as values that are located far away from the rest of the data.

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The wavelength of the signal of the state trooper's car sending a radar signal at a frequency of 14.6 GHz is 2.05 × 10⁻² m.

Wavelength is the separation between two consecutive waves corresponding points. When two points or particles are referred to be "corresponding points," it means that they are both in the same phase and have completed exactly the same portions of their periodic motion.

Wavelength is typically measured from crest to crest or from trough to trough in transverse waves (waves with points vibrating at right angles to the direction of their advance); from compression to compression or from rarefaction to rarefaction in longitudinal waves (waves with points vibrating in the same direction as their advance).

The following equation describes how a wave's frequency and speed are related to its wavelength:

λ =\(\frac{v}{f}\)

where,

λ is the wavelength

v is the speed of the wave

f is its frequency

 The radio signal of the car has a frequency of:

f= 14.6GHz = 14.6 × 10⁹ Hz

and a speed of:

v = 2.998 × 10⁻² m/s

Substituting the values:

λ = 2.02 × 10⁻² m

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The refraction of light in a mirage is distinct from the refraction of light at an interface like that between air and water as follows: Refraction in a Mirage.

When light passes through the atmosphere, it slows down, bends, and refracts in the air. Refraction happens as the air temperature alters. The warmer the air, the more it refracts. In a mirage, hot air near the surface of the ground refracts light rays above it toward our eyes as if they were reflecting off a flat surface. This implies that a mirage is caused by the bending of light rays when they pass through hot air above a surface.

The light that passes through the air is refracted due to the difference in temperature in the air, resulting in an illusion of a shimmering body of water that appears to be on the ground. Refraction of Light at an Interface. When light moves from one medium to another, it refracts at the interface or the boundary between the two media. This can be seen, for example, when light passes through the air and into the water. When light enters the water from the air, it slows down, bends, and refracts.

The angle of refraction is always greater than the angle of incidence in such situations. This happens because light waves slow down as they enter the denser medium, causing them to bend. The angle at which light rays approach the interface is known as the angle of incidence. When light moves from one medium to another, its speed and wavelength alter, and this is known as refraction.

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On a flat surface, a brick can be held in three different positions. Additionally, as the area of the cross section rises, the pressure or force required to hold the widest portion of the brick flat will decrease.

The holes enable the construction of the masonry brickwork with that extra layer of security. When used in building, bricks are twisted, ensuring that outside walls don't reveal the holes. The holes provide a mechanism for binding bricks together closer together when filled with mortar.

A building with triple brick has a high thermal mass and a low R value. It would function really well in an arid environment. If I were to build something out of masonry, it would be made of cinder blocks with a brick veneer on top, with such a thick layer of stiff insulation between in between.

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The main affect would applying 10x as much force have on the object is the  covering of 10 times more distance as compared to the previous force because the force is 10 times.

If on movable object we apply 10x as much force then the object will move in the forward direct and accelerate more which leads to covering of distance 10 times more because we know that if one newton force is applied the body accelerate to 1 meter per second square so we apply 10 times more force so the body will accelerate 10 times and attain 10 times more distance. So that's why we can say that increasing force will lead to increase distance covered by the body.

So we can conclude that the main affect would applying 10x as much force have on the object is the  covering of 10 times more distance as compared to the previous force because the force is 10 times.

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None of the provided options (11.0%, 12.0%, 100%, 110%) are correct. The correct answer is approximately 4.41%.

To calculate the rate of return of the risk-free portfolio, ready to utilize the concept of the capital allocation line (CAL).

The CAL speaks to a combination of a risky portfolio and a risk-free asset. In this case, we have two unsafe resources (securities X and Y) and need to decide the rate of return of the risk-free portfolio.

The formula for the CAL is:

CAL rate of return = risk-free rate + (portfolio standard deviation / risky asset standard deviation) * (risky asset rate of return - risk-free rate)

Let's plug in the given values:

Risk-free rate = 0% (since it's not specified)

Portfolio standard deviation = ?

Risky asset standard deviation (σX) = 85%

Risky asset rate of return (rX) = 9%

Correlation coefficient (ρ) = -1 (perfectly negatively correlated)

To calculate the portfolio standard deviation, we need the weights of the assets in the portfolio. Since it's not specified, we'll assume an equal weighting for simplicity.

Portfolio standard deviation = sqrt\(\sqrt{[(wX^2 * σX^2) + (wY^2 * σY^2) + 2 * wX * wY * ρ * σX * σY]}\)

Assuming equal weights (wX = wY = 0.5):

Portfolio standard deviation = sqrt\(\sqrt{[(0.5^2 * 85%^2)}\) +\(\sqrt{ (0.5^2 * 12%^2)}\) + \(2 * 0.5 * 0.5\)* \(-1 * 85% * 12%]\)

Simplifying:

Portfolio standard deviation = sqrt\(\sqrt{[(0.25 * 0.7225) + (0.25 * 0.0144) - 0.102 * 0.102]}\)

Portfolio standard deviation = \(\sqrt{[0.180625 + 0.0036 - 0.010404]}\)

=\(\sqrt{(0.173821) }\)

= 0.416783

Now, we can calculate the rate of return of the risk-free portfolio using the CAL formula:

CAL rate of return = 0% + (0.416783 / 0.85) * (9% - 0%)

CAL rate of return = 0 + (0.490335 * 0.09) = 0.044129

Converting to a percentage:

CAL rate of return = 0.044129 * 100% ≈ 4.41%

Therefore, none of the provided options (11.0%, 12.0%, 100%, 110%) are correct. The correct answer is approximately 4.41%.

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The complete question is-

Security X has expected return of 9% and standard deviation of 85%. Security Y has expected return of 14% and standard deviation of 12% The two securities have a correlation coefficient of 10 (perfectly negatively

correlated) The risk-free portfolio that can be formed with the two securities will warn a rate of return of

Select one

Oa 11.0%

Ob 12.0%

O 100%

Od. 110%

None of the options are correct.

Answer:

a. 10.2 N b. 1.73 c. 58.8 N d. 10.2 N

Explanation:

a. The force that will make the block slide down the plane

This is the component of the block's weight along the plane F = mgsinθ where m = mass of block = 1.2 kg, g = 9.8 m/s² and θ = angle of incline = 60°.

So, F = mgsinθ = 1.2 kg × 9.8  m/s² × sin60°.= 10.18 N ≅ 10.2 N

b. The coefficient of friction

The coefficient of friction, μ = tanθ = tan60° = 1.73

c. The normal reaction.

This is equal to the vertical component of the block's weight. So, F = mgcosθ. Substituting the values for the variables from above, we have

F = mgcosθ = 1.2 kg × 9.8  m/s² × cos60°.= 58.8 N

d. The frictional force

Since the block does not slide, there is no net force on it. If f is the frictional force, then

F - f = ma. Since a = acceleration = 0,

F - f = 0

f = F = mgsinθ = 1.2 kg × 9.8  m/s² × sin60°.= 10.18 N ≅ 10.2 N

Answer:

The reason it hurts more to fall on a concrete floor than on grass is due to a combination of factors

When you fall, your body's momentum causes it to continue moving until it comes into contact with an object that can stop it. When you fall on a concrete floor, the surface is hard and rigid, which means that it can stop your body's motion more quickly and with more force. This results in a greater impact force on your body, which can cause more damage and more pain.

On the other hand, when you fall on grass, the surface is soft and yielding, which means that it can absorb some of the impact force. This results in a lower impact force on your body and therefore less damage and less pain.

Another factor that comes into play is the time of contact. When you fall on a concrete floor, the time of contact is shorter, which means that the impact force is concentrated over a shorter period of time. This can increase the intensity of the force and make it more painful. On the other hand, when you fall on grass, the time of contact is longer, which means that the impact force is spread out over a longer period of time. This can decrease the intensity of the force and make it less painful.

In summary, it hurts more when you fall on a concrete floor than on grass because the concrete floor is a harder surface that can stop your body's motion more quickly and with more force, resulting in a greater impact force and a shorter time of contact.

Answer:

The untrue option is C: "More arrowheads on lines mean a brighter light"

Explanation:

Ray diagrams are used to show how the light behaves with things like mirrors or lenses. Where we only study how the direction of the light changes when it interacts with these objects.

The "light" is represented with arrows, where again, the only thing we care is the direction of the light, so the first statement is true, the arrowheads show the direction of the light, and only that.

The intensity of the light, in this context, has no effect on how light behaves, so there is not a necessity of representing the intensity of the light, thus, more arrowheads on lines do not mean a brighter light. It may only be used to represent changes in direction of the light.

Finally, we know that light travels in straight pats (the pats can be curved in some cases, like with large gravitational fields, but this is not the case of a ray diagram) so the lines that represent the light should always be straight, thus option B is also true.

The untrue option is C: "More arrowheads on lines mean a brighter light"

When a beam of electrons passes through the same material, the electrons bounce off the gold, proving the particle nature of electrons.

The electrons are the spinning objects around the nucleus of the atom of the element in an orbit.

Interference patterns which is a characteristic of waves, arise when X rays pass through a crystalline material like gold.

The X rays ionize the electrons and they jump off from the gold. This represents the particle nature of electrons.

Thus, when a beam of electrons passes through the same material, the electrons bounce off the gold, proving the particle nature of electrons.

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International space station is the mission of NASA. It has launched 134 successful space missions.

International space station is a huge place in the space but in the close orbit with all possible facilities for astronauts , scientists and others

The National Aeronautics and Space Administration (NASA) is an acronym for the National Aeronautics as well as Space Administration. NASA was established as a division of the United States government on October 1, 1958. NASA is just in charge of all research and technology related to aviation and space in the United States.

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Answer:

B

Explanation:

the answer is b because it's b that is the answer

An electron (charge -e) is at rest in a region of electric potential that varies as a function of position. When released it will move A. into a region of lower potential.

Since the electric potential varies as a function of position, there will be regions of higher and lower potential energy. The electron will move from a region of higher potential energy to a region of lower potential energy. Therefore, the electron will move into a region of lower potential The direction of the electric field is perpendicular to the equipotential lines. Therefore, the electron will move in the direction of the electric field if the equipotential lines are not parallel to the electric field.

If the equipotential lines are parallel to the electric field, the electron will move perpendicular to the electric field. In summary, the electron will move into a region of lower potential while following the direction of the electric field or moving perpendicular to it depending on the orientation of the equipotential lines. So therefore the correct answer is An electron (charge -e) is at rest in a region of electric potential that varies as a function of position. When released it will move A. into a region of lower potential.

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Answer:

The particles are held rigidly in place by all the other particles around them so they can't slip past one another or move apart. This gives solids a fixed shape and a fixed volume.