23. A cubic box with an edge of exactly 1 cm has a volume of

Fluorine is the sample which is shiny but does not conduct heat and electricity through it. The flow of electricity requires the flow of electrons or charged particles. Thus, the correct option is A.

A conductor is a substance, chemical element, or a material which allows electricity and heat to flow through it. In a conductor, the electrical charge carriers which are usually electrons or positive and negative ions, move easily from one atom to another atom when a particular amount of voltage is applied.

Fluorine is a shiny element however it does not conduct heat and electricity through it. It is the most electronegative atom and is very reactive in nature. It only gains electrons and does not lose them. And because of this property of fluorine, it restricts the movement of electrons through it and fails to conduct electricity.

Therefore, the correct option is A.

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Answer:

Bohr’s

Explanation:

Answer:

A

Explanation:

The position of the ball at 0.8 s is -12.5 m.

The instantaneous velocity of the ball is calculated using formula,

Plug in the known values,

Therefore, the instantaneous velocity of ball is -15.625 m/s.

The position of the image is 35 cm from the concave mirror, the size of the image is approximately 1.944 cm, and the nature of the image is upright.

To determine the position, size, and nature of the image formed by a spherical mirror, we can use the mirror formula:

1/f = 1/v - 1/u

where:

f is the focal length of the mirror,

u is the object distance (distance of the object from the mirror),

v is the image distance (distance of the image from the mirror).

Given data:

f = -12 cm (negative sign indicates a concave mirror)

u = -36 cm (negative sign indicates that the object is located on the same side as the incident light)

h = 2 cm (height of the object)

Substituting the values into the mirror formula, we have:

1/-12 = 1/v - 1/-36

Simplifying the equation:

-1/12 = (36 - v)/36

-1/12 = (36 - v)/36

-1 = 36 - v

v = 36 - 1

v = 35 cm

The positive value for v indicates that the image is formed on the opposite side of the mirror from the object.

To find the size of the image, we can use the magnification formula:

magnification (m) = -v/u

Substituting the values:

m = -35/-36

m ≈ 0.972

Since the magnification is positive, it indicates an upright image.

The size of the image can be determined using the magnification formula:

m = image height (h')/object height (h)

0.972 = h'/2

h' ≈ 1.944 cm

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Answer:

bro we cant do this

Explanation:

Answer:

The energy resource brought into a coal power plant is coal.

Found the answer at: https://www.tva.com/energy/our-power-system/coal/how-a-coal-plant-works#:~:text=Coal%2Dfired%20plants%20produce%20electricity,to%20start%20the%20process%20over.

The waste produced by coal power plants is coal ash and the energy produced by coal power plants is electricity.

Answers found at: http://www.groundtruthtrekking.org/Issues/AlaskaCoal/Coal-Ash-Combustion-Wastes.html       and        https://www.tva.com/energy/our-power-system/coal/how-a-coal-plant-works#:~:text=Coal%2Dfired%20plants%20produce%20electricity,to%20start%20the%20process%20over.

The two laws of thermodynamics apply to what I found out in my research because I know that the entropy increase due to the combustion of conventional fuels is much larger than that resulting from that of nuclear fuels, and is therefore much more dangerous. Also, I know that heat is used to burn coal and create energy.

Found answer at: https://www.encyclopedie-energie.org/en/energy-consumption-and-entropy-release-in-the-biosphere/

Explanation:

Hope this helps, i got an okay score on it but better than nothing i guess lol

The power in every scenario is the same. Power is the measurement of the energy transfer over time.

Power is the measurement of the energy transfer over time. It can be calculated by the formula,

\(P = \dfrac Wt\)

Where,

\(P\)- power

\(W\) - work

\(t\) - time

In scenario A,

\(P = \dfrac {120 }6 = 20 \rm \ W\)

In scenario B,

\(P = \dfrac {160 }8 = 20 \rm \ W\)

In scenario B,

\(P = \dfrac {200 }{10} = 20 \rm \ W\)

Therefore, the power in every scenario is the same.

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Answer:

Read each scenario and then answer the question.

Scenario A: 120 J of work is done in 6 s.

Scenario B: 160 J of work is done in 8 s.

Scenario C: 200 J of work is done in 10 s.

Answer:

sir Isaac Newton is referred as the father of modern physics

Answer:

the electric force and the magnetic force.

Texas introduced Electronic voting in the 2002 midterm election as a way to modernize the state's voting process, increase the accuracy of the results, and improve the security of the voting process.

A number of Texas counties introduced electronic voting in the 2002 midterm election because of several reasons.

Firstly, the introduction of electronic voting was an attempt to modernize the state's voting process. The older method of paper-based voting was viewed as slow and inefficient, with many people waiting in line for hours to cast their votes. In contrast, electronic voting promised to speed up the process and reduce waiting times, allowing more people to participate in the election.

Secondly, the use of electronic voting was also intended to increase the accuracy of the election results. The older paper-based system was prone to human error, with mistakes made in vote counting and tallying. By using electronic voting machines, the state hoped to eliminate such errors and produce more accurate results.

Finally, electronic voting was also viewed as a more secure method of voting. The machines were designed to prevent fraud and tampering, with several security features in place to prevent hacking or other unauthorized access.

The introduction of electronic voting in Texas was a significant step forward for the state, which had long been plagued by issues with its voting process. In previous elections, voters had often been forced to wait in line for hours to cast their votes, with many people giving up and leaving before they could vote. The use of electronic voting promised to reduce waiting times and make the process more efficient, ensuring that more people would be able to participate in the election.

Additionally, the introduction of electronic voting machines was also intended to increase the accuracy of the election results. In the past, the paper-based voting system had been prone to errors, with mistakes made in vote counting and tallying. By using electronic machines, the state hoped to eliminate such errors and produce more accurate results.

Finally, the use of electronic voting machines was also intended to increase the security of the voting process. With several security features in place to prevent fraud and tampering, the state hoped to ensure that the election results were fair and accurate.

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The climate change can directly impact the formation of hurricanes because increasing temperature increases intensity of hurricanes.

Evaporation increases as temperatures rise which also causes the transfer of heat from the oceans to the atmosphere. As the storms travel across oceans whose water is warm, they absorb more water vapor and heat which increases rainfall as well as intensity of hurricanes.

So we can conclude that the climate change impacted the formation of hurricanes due to increasing temperature that increases intensity of hurricanes.

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"over the last eight years, we've delivered on that promise in many ways, both big and small, including, of course, providing health coverage to 20 million more Americans and making healthcare more affordable for all Americans."

The quotation that addresses the audience's concern about President Obama taking actions at the end of his term while waiting for President Trump to take office is:

"over the last eight years, we've delivered on that promise in many ways, both big and small, including, of course, providing health coverage to 20 million more Americans and making healthcare more affordable for all Americans."

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The total cost for the energy used if electricity costs 10p per unit is determined as 2p.

The total energy consumed during the process is calculated as follows;

E = Pt

where;

E = (800 W/1000) x (2.5 /60)   + (2 kW) x (5/60)

E = 0.8 kW x 0.042 hr     +    2kW x 0.083 hr

E = 0.0336 kW-hr  +  0.166 kW-hr

E = 0.1996 kW-hr

C = E x 10p

C = 0.1996 kW-hr x 10p

C = 1.996p

C ≈ 2p

Thus, the total cost for the energy used if electricity costs 10p per unit is determined as 2p.

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Answer: Friction is an important thing in life and we use it to move things or friction is used on us.

Explanation: Friction happens when you rub against something or when someone or something rubs against you.

The total energy of the body at evevry point is remained same due to the law of conservation of energy. Distance from A to B and final velocity of the ball just reach before C is 44.3 m/s.

d (distance) from A to B is = √2gh

In this case given are, g = 9.8 m/s² and h = 100m,

so here d = √(2⋅9.8⋅100) = 44.3m.

Final velocity ,v = √2gh

Here given are , v is the velocity, g is the acceleration due to gravity, and h is the height. In this case,

g = 9.8 m/s² ,h = 100m,

v = √(2⋅9.8⋅100)

= 44.3 m/s (final velocity)

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Answer:

to find the slope you need to find the change in distance then you divide by the corresponding change in time

eg

( 4-2) ÷ (2-1)

= 2m/s

The estimated average power output of the football player during the workout is approximately 493.72 watts.

To estimate the average power output of the football player, we can use the formula for power:

Power = Work / Time

First, we need to calculate the work done by the player.

The work done is equal to the product of the force applied and the distance moved in the direction of the force.

In this case, the force applied is the component of the player's weight parallel to the stairs, which can be calculated as:

Force = mass * acceleration due to gravity * sin(angle)

where the angle is the inclination of the stairs.

Next, we calculate the work done:

Work = Force * Distance

Finally, we divide the work by the time to find the average power:

Power = Work / Time

Substituting the given values into the equations:

Force = (95 kg) * (9.8 m/s^2) * sin(33°)

Work = Force * Distance

Power = Work / Time

Calculating these values:

Force ≈ 95 kg * 9.8 m/s^2 * sin(33°)

Work = Force * 83 m

Power = Work / 82 s

Hence, The estimated average power output of the football player during the workout is approximately 493.72 watts.

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Answer: I don't know

Explanation:

Answer:

The first one is Earths Tilt on its axis

Answer:

31.25 meters or ~31 meters approximately

Explanation:

Let's see which of the 5 variables we are given since this is a constant acceleration problem.

We want to find the height of the bridge, aka the vertical displacement of the rock. Let's set the upwards direction to be positive and the downwards direction to be negative.

We are told that the acceleration is 10 m/s² downward, so we have a = -10 m/s².

We are also told that the time it takes the rock to hit the water is 2.5 seconds. Time is the same regardless of the x- or y- direction, so we can say that t = 2.5 seconds.

Now, we aren't told this directly, but we can figure out that the velocity in the y-direction is 0 m/s, since the rock is dropped from rest off the bridge. Therefore, \(v_i=0 \frac{m}{s}\).

We want to find the vertical displacement, the height of the bridge, so we can say that \(\triangle x= \ ?\)

We have 4 out of 5 variables:

Look through the constant acceleration equations to see which equation has all 4 of these variables. You should come up with this one (no final velocity):

Subtract \(x_i\) from both sides of the equation to get:

Substitute in our known variables and solve for delta x.

0 m/s multiplied by 2.5 s is 0, so we have:

Evaluate the exponent first and multiply the terms together.

The vertical displacement is -31.25 meters from the rock's starting position, so we can say that the height of the bridge is 31.25 meters, which is approximately 31 meters tall.

Answer:

31 meters

hope it help you

thanks for free points.........

According to a fire test by the National Institute for Standards and Technology (NIST), flashovers can occur within as little as 3 to 4 minutes after flames are ignited in a room or enclosed space.

A flashover is a rapid and extreme escalation of a fire, where all the combustible materials in a room simultaneously ignite and cause the entire space to become engulfed in flames. Flashovers are one of the most dangerous and deadly aspects of a fire, and they can be triggered by a variety of factors such as high temperatures, lack of ventilation, and the presence of flammable materials. Understanding the conditions that can lead to a flashover is important for fire safety planning and prevention.

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The personality trait which helps you to use straightforward and confident communication with others is referred to as Assertive and is therefore denoted as option D.

This is defined as the process in which information is passed or exchanged from one person or place to another through various means and forms.

Assertiveness is a personality which is characterized by self assuredness without exhibiting aggressiveness in making points clear to other people.It is also known as a straightforward and confident communication with others.

This is therefore the reason why option D was chosen as the most appropriate choice.

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Answer: assertive

Explanation:

Answer:

6 beats

If one fork beats once and another twice in the same time period

you would hear 1 beat. (Same for 2 and 3 beats).

Explanation:

1) Nitrogenous base

2) Pentose sugar

3) One or more phosphate group

A 27 kg child is sliding down a 35-degree inclined slide. The coefficient of kinetic friction between the child's pants and the slide is 0.25. The infant is subject to a friction force of roughly 55.58 Newtons.

To find the magnitude of the friction force acting on the child, we need to consider the gravitational force and the normal force acting on the child.

1. Gravitational force:

The gravitational force acting on the child can be calculated using the formula: \(F_{\text{gravity}} = m \cdot g\) = m * g, where m is the mass of the child and g is the acceleration due to gravity (approximately 9.8 m/s²).

\(F_{\text{gravity}}\) = 27 kg * 9.8 m/s² = 264.6 N

2. Normal force:

The normal force is the force exerted by a surface to support the weight of an object resting on it. In this case, the normal force acts perpendicular to the inclined slide. It can be calculated using the formula: \(F_{\text{normal}}\)= m * g * cosФ, where theta is the angle of inclination.

\(F_{\text{normal}}\)= 27 kg * 9.8 m/s² * cos(35 degrees) = 222.3 N

3. Friction force:

The friction force can be calculated using the formula: \(F_{\text{friction}}\) = coefficient of kinetic friction * \(F_{\text{normal}}\).

\(F_{\text{friction}}\) = 0.25 * 222.3 N = 55.58 N

Therefore, the magnitude of the friction force acting on the child is approximately 55.58 Newtons.

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Answer:

14m/s

Explanation:

subtract initial velocity by final velocity

Answer:

10 seconds

Explanation:

Answer:

133.33 mm

Explanation:

First we need to find the volume of the sphere. The volume of a sphere is given by:

V = (4/3) * pi * r^3

With a radius of 10 cm, we have:

V = (4/3) * pi * r^3 = 4188.79 cm3

The sphere will be moulded into a cylinder, so the volume will be the same. The volume of a cylinder is:

V = pi * r^2 * h

Where h is the height of the cylinder, and for this case, it will be the length.

The radius is the same old radius, so we have:

4188.79 = pi * 10^2 * h

h = 4188.79 / 100pi = 13.3333 cm

In millimeters, we have h = 133.33 mm

Answer:

-1.46 m/s^2

Explanation:

Write down what is given first:

v0 = 12 m/s

vf = 0 m/s

d = 45 m

We are trying to find acceleration, so we will use the equation vf^2 = v0^2 + 2ad

Plug in the values we have:

0^2 = 12^2 + (2 x 45 x a)

a = - 1.46 m/s^2

Note that this acceleration is negative because the body is slowing down, so the acceleration with be negative, because the change in velocity is negative.

According to the given statement - 1.46 m/s²  is the acceleration of the body.

Acceleration is the rate of change in a moving asteroid's speed and direction over time. When something moves faster or slower, it is considered to be accelerating.

Use the formula a = v / t to determine acceleration, where v stands for the change in velocity and t for the time it took for the change to take place. Use the formula v = vf - vi to determine v, where vf stands for final velocity and vi for starting velocity.

Write down what is given first:

v0 = 12 m/s

vf = 0 m/s

d = 45 m

We are trying to find acceleration, so we will use the equation

vf² = v0² + 2ad

Plug in the values we have:

0² = 12² + (2 x 45 x a)

a = - 1.46 m/s²

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