What is the maximum speed of a point on the outside of the wheel 15 cm from the axle?.

Answer:

B.) “Shininess” should be explained as “Light bounces off the moving electrons.”

Explanation:

Answer:

c. natural resources

Explanation:

mercantilism is an economic practice by which governments use their economies

if am ryt

Answer:

C. natural resources

Explanation:

Mercantilism is based on the concept of a nation's power being directly related to its wealth. A nation's goal under mercantilism was to obtain as much gold and silver as possible and to export more goods than it imported from other nations. Gold and Silver are natural resources.

In the given situations, the rabbit in Situation 1 (mass 1 kg, velocity 10 m/s) has a greater kinetic energy (50 J) compared to the rabbit in Situation 2 (mass 2 kg, velocity 5 m/s) with a kinetic energy of 25 J.

To identify the object with the greater kinetic energy, we need to compare the mass and velocity of the objects involved in different situations. The kinetic energy (KE) of an object is given by the equation KE = 0.5 * m * v², where m is the mass of the object and v is its velocity.

Given that all other factors remain the same, we can analyze two situations:

Situation 1: The wildlife keeper chases a rabbit with a mass of 1 kg at a velocity of 10 m/s.

Situation 2: The wildlife keeper chases a rabbit with a mass of 2 kg at a velocity of 5 m/s.

Now, let's calculate the kinetic energies of the objects in both situations:

Situation 1:

Mass (m₁) = 1 kg

Velocity (v₁) = 10 m/s

KE₁ = 0.5 * m₁ * v₁²

   = 0.5 * 1 kg * (10 m/s)²

   = 0.5 * 1 kg * 100 m²/s²

   = 50 J (joules)

Situation 2:

Mass (m₂) = 2 kg

Velocity (v₂) = 5 m/s

KE₂ = 0.5 * m2 * v2²

   = 0.5 * 2 kg * (5 m/s)²

   = 0.5 * 2 kg * 25 m²/s²

   = 25 J (joules)

Comparing the kinetic energies, we find that KE₁ (50 J) is greater than KE₂ (25 J). Therefore, in this scenario, the object with the greater kinetic energy is the rabbit in Situation 1, where it has a mass of 1 kg and a velocity of 10 m/s.

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Complete question :

A wildlife keeper chases a rabbit that is trying to escape. In which situation would you be able to identify the object with the greater kinetic energy? Assume that only the changes described happen and that all other factors remain the same.

Explanation:

more massive objects will attract each other with a greater gravitational force.

The vertical velocity of the projectile increases but reaches zero at the maximum height and begins to decrease.

When we talk of the projectile, we are talking about the object that is moving along a parabolic path. Hence the object that is undergoing the projectile motion is going to have a curved path. Take an instance, when you kick a soccer ball, you have to notice that the ball would tend to curve as it moves up in the air and then begins to descend. That is a typical example of a projectile motion.

Now, we have to note that at the maximum height, the vertical velocity of the object would be zero. When I throw an object up, the vertical velocity of the object would continue to increase until the object reaches the maximum height where the vertical velocity is zero and then the vertical velocity of the object begins to decrease as shown in the image.

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The damages of $100,000 awarded to the plaintiff are likely to be excluded from taxable income since they were awarded as compensation for physical injury.

In general, damages received in a lawsuit are taxable as income unless they are awarded for physical injury or sickness. In this case, since the plaintiff lost the use of her leg due to the assault, the damages awarded to her are likely to be considered compensation for physical injury.

However, it is important to note that there are certain exceptions and limitations to the exclusion of damages for physical injury. For example, punitive damages, which are awarded to punish the defendant for their behavior rather than to compensate the plaintiff for their injury, are generally not excludable from taxable income. Additionally, if the damages received include amounts for lost wages or other taxable income, those amounts will be subject to income tax.

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For a droplet exposed to this field, weight is greater than the electric force by 567.126 x 106 N.

The electric force is absent?

The nucleus and electrons are drawn to one another by the electric force. The void created by a positive or negative charge is referred to as an electric field since it generates a field there.

13pC = 13 X 10⁻¹² C

Electric field E = 15000 N/C

Electric force on the charge

= charge x electric field

= 13 x 10⁻¹² x 15000

= 195 x 10⁻⁹ N.

It will act in upward direction as force on positive charge acts in the direction in which electric field exists.

Volume of droplet = 4/3 π R³

R = 2.4 X 10⁻³ m

Volume V = 4/3 x 3.14 x ( 2.4 x 10⁻³)³

= 57.87 x 10⁻⁹ m³

density of water = 1000 kg / m³

mass of water droplet

density x volume

1000 x 57. 87 x 10⁻⁹ kg

= 57.87 x 10⁻⁶ kg .

Weight = mass x g

= 57.87 x 10⁻⁶ x 9.8

= 567.126 x 10⁻⁶ N.

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Question:

Raindrops acquire an electric charge as they fall. Suppose a 2.4-mm-diameter drop has a charge of +13 pC. In a thunderstorm, the electric field under a cloud can reach 15,000 N/C, directed upward. For a droplet exposed to this field, how do the magnitude of the electric force compare to those of the weight force and what is the dircetion of the electric force

Answer:

A is true ,b is true

Explanation:

A bond that is formed by a positively charged ion to a negatively charged ion is termed as an ionic bond. An example is sodium chloride.

When two atoms with great difference in electronegativities forms a bond, the electrons are completely transferred between the atoms and are ionized. These positive and negative charged ions forms a bond purely based on the electrostatic force of attraction. Such a compound is called an ionic compound.

Usually an electropositive metal in 1st and 2nd group of periodic table  reacts with non-metals in 16th and 17th group to form ionic compounds. Lets consider the example of sodium chloride.

The electronic configuration of sodium is 2, 11, 1

Electronic configuration of chlorine is 2, 8, 7

Sodium is an electropositive metal and it has a tendency to lose electron to complete octet electronic configuration. Chlorine on the other hand is an electronegative non- metal, tends to lose electrons. So the sodium when reacting with chlorine loses its outer electron and become Na⁺ and the chlorine gains the electron and become Cl⁻.

So an electrostatic force of attraction is formed between the ions and form the compound Na⁺Cl⁻.

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It takes approximately 20.09 seconds for the car to accelerate up the 2.85 meter hill.

potential energy =\(m * g * h\)

where m = 825 kg (mass of the car), g = 9.81 m/s^2 (acceleration due to gravity), and h = 2.85 m (height of the hill)

potential energy = 825 kg * 9.81 m/s^2 * 2.85 m

potential energy = 22,571 J

work = kinetic energy + potential energy

where kinetic energy = 1/2 * m * v^2

and v = 13 m/s (velocity of the car)

kinetic energy = 1/2 * 825 kg * (13 m/s)^2

kinetic energy = 703,612 J

work = 703,612 J + 22,571 J

work = 726,183 J

power = work / time

where power = 36,181 watts (output power of the car's engine)

time = work / power

time = 726,183 J / 36,181 W

time = 20.09 seconds

Acceleration can be caused by various forces, such as gravity, friction, or a pushing or pulling force. For example, when a car accelerates, the engine produces a force that propels the car forward, increasing its speed. When a skydiver jumps out of a plane, gravity causes the diver to accelerate towards the ground.

In addition to its use in physics, the term "accelerate" is also used in a broader sense to describe the process of speeding up or increasing the pace of something. For example, a company may accelerate its production schedule to meet a deadline, or an athlete may accelerate their training to improve their performance. In these contexts, acceleration refers to an increase in the rate or intensity of a process, rather than a change in velocity.

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Answer:

Explanation:

This might surely help you ☺️❤️

Answer:

The temperature will no longer rise with the heat because the energy. When the water is boiled on the steam, the temperature rises when heat is given

Explanation:

Answer:Take into account the the Earths gravity is 9.8 meters a second

Explanation:

Gravity pulls down on the ball at g=-9.81 m/s^2. Up is positive, down is negative.The ball started at a certain initial velocity of Vi m/s. Time it took is t=4s. Final velocity is Vf=0 m/s, because at the highest point the ball stops moving.

Vf=(g*t)+Vi

Rearrange for Vi.

Vi=Vf-(g*t)

Vi=0-(-9.81*4)=39.24 m/s (upward)

Think about it this way for the non-mathematical approach. The ball stops at the top. The initial velocity gets reduced by 9.81 m/s every second, and reaches 0 m/s at the top. It took 4 seconds, so 9.81*4 is equal to the initial upward velocity.

Answer:

d. is formed from pressure and heat

Explanation:

it is formed from hot magam

\(\\ \tt\bull\leadsto Speed=\dfrac{Distance}{Time}\)

\(\\ \tt\bull\leadsto Speed=210/35=6m/s\)

Answer:

6m per second

Explanation:

Distance=210m

Time=35s

speed=distance/time

speed= 210/35=6ms

Answer

Mehanical energy

Please. Mark brainlist

I am not very much sure but I will give a small explanation here

A bow and arrow possesses mechanical energy. When the arrow is drawn it has potential energy and when it is released it produces a force to propel the arrow towards the aimed target, therefore giving the arrow kinetic energy. When you combine both energies it creates mechanical energy

Answer:

this is the answer........................

What do you need help with?

The work-kinetic energy theory states that the 5.1 n force produces 20 J of work on the canister during this period.

The term "force" has a particular meaning in science. At the this level, calling a force a push or even a pull is totally acceptable. A power is not something an object "has in it" or it "contains." One object experiences a force from another. There are both living things and non-living objects inside the concept of the a force.

Force is the term used to describe a body's tendency to change or alter its state as a result of an external cause. When force is applied, the object can also alter its size, shape, & direction.

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Answer:

The answer is....

Explanation:

culture is meaning full to humans because they like having a specific way of doing things and life style thats been passed down by their ancestors for years. Culture is learned through civilization by people passing it down and showing others the way of their culture and opening up.  Culture defines many myths and legends because of how open minded and creative most cultures are.  They believe in many different gods.

pls mark brainlyest <3

Answer:

75%

Explanation:

Efficiency=MA/VR*100

=3/4*100

=0.75*100

=75%

Answer:

4500

Explanation:

Formula: power x time

300 x 15 = 4500

The magnitude of the gravitational force of attraction between two uniform spheres of mass m and radius r that are touching each other can be found using Newton's law of gravitation:

F = G * (m1 * m2) / r^2

where F is the gravitational force of attraction between the two spheres, G is the gravitational constant, m1 and m2 are the masses of the two spheres, and r is the distance between their centers of mass.

Since the two spheres are touching each other, their centers of mass are separated by a distance of 2r. Therefore, we can substitute 2r for r in the above equation:

F = G * (m1 * m2) / (2r)^2

Simplifying the denominator, we get:

F = G * (m1 * m2) / 4r^2

Since both spheres have the same mass m, we can substitute m for both m1 and m2:

F = G * (m * m) / 4r^2

Finally, we can simplify this expression using the value of the gravitational constant, which is approximately equal to 6.674 x 10^-11 N m^2 / kg^2:

F = (m^2 * G) / (4r^2)

Therefore, the magnitude of the gravitational force of attraction between two uniform spheres of mass m and radius r that are touching each other is:

F = (m^2 * G) / (4r^2)

where G is the gravitational constant and m and r are the mass and radius of each sphere, respectively.

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To find the magnitude of the gravitational force of attraction between two uniform spheres with mass m and radius r, we can use Newton's law of universal gravitation.

The formula for the gravitational force of attraction (F) between two objects is given by:

F = (G * m1 * m2) / r^2

where G is the gravitational constant, m1 and m2 are the masses of the two objects, and r is the distance between their centers.

In this case, both spheres have the same mass (m) and are touching each other, so the distance between their centers is equal to 2r (the sum of their radii).

The gravitational force (F) between the two spheres can be calculated as:

F = (G * m * m) / (2r)^2

Simplifying this expression:

F = (G * m^2) / (4r^2)

Therefore, the magnitude of the gravitational force of attraction between the two spheres is (G * m^2) / (4r^2), expressed in terms of the variables m, r, and G (the gravitational constant).

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Internal waves are generated by b. water masses slipping over one another.

These waves occur within a fluid medium, such as the ocean, where there is a difference in density between the water layers. The waves propagate along the boundary of these two layers, called the pycnocline, and transfer energy and momentum between them. Unlike surface waves, which are primarily driven by wind, internal waves can also be influenced by factors such as tides and currents, making them a complex and significant part of the ocean dynamics.

Although boat and ship wakes, turbidity currents, and tides can contribute to the generation of internal waves, it is the interaction of water masses with different densities that plays the most significant role in their formation. Understanding internal waves is essential for studying ocean circulation, marine ecosystems, and global climate, as they influence the distribution of nutrients, heat, and dissolved gases within the ocean. So therefore internal waves are generated by b. water masses slipping over one another.

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Answer:

9.45 kWh

Explanation:

Energy = Power × time

E = 900 W × (1.5 h/day × 7 day)

E = 9450 Wh

E = 9.45 kWh

A Brnsted-Lowry acid or Lewis acid is a molecule or ion that can either donate a proton (the hydrogen ion, H+) or establish a covalent bond with an electron pair. 

Proton donors, also known as Brnsted-Lowry acids, are the first class of acids. Proton donors, also referred to as Arrhenius acids, generate the hydronium ion H3O+ under the unique situation of aqueous solutions.

The Arrhenius theory was expanded upon by Brnsted and Lowry to take non-aqueous solvents into account.

A hydrogen atom is typically bound to a chemical structure in a Brnsted or Arrhenius acid that is still energetically advantageous after the loss of H+. Aqueous Arrhenius acids have distinguishing characteristics that serve as a useful definition of an acid.

Therefore, A Brnsted-Lowry acid or Lewis acid is a molecule or ion that can either donate a proton (the hydrogen ion, H+) or establish a covalent bond with an electron pair. 

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As the principal quantum number of the Hydrogen atom increases, the spacing between adjacent energy levels decreases. This is because the energy levels become closer together as the electrons move further away from the nucleus.

As the principal quantum number increases, the distance between the nucleus and the electron increases, leading to a decrease in the electrostatic attraction between the two and a subsequent decrease in energy.

To provide further explanation, the principal quantum number represents the energy level or shell that the electron is located in. Each energy level has a set of sublevels with different energy states, and the spacing between these energy states decreases as the principal quantum number increases. This is due to the fact that the energy levels become more closely spaced as the electron moves further away from the nucleus. This relationship is fundamental to the understanding of atomic structure and plays a key role in the behavior of chemical reactions and the formation of molecules.

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As the principal quantum number of the Hydrogen atom increases, the spacing between adjacent energy levels:
a. Decreases. The spacing between adjacent energy levels in the Hydrogen atom is determined by the difference in energy between two consecutive energy levels.

This difference is given by the equation ΔE = Rh/n^2, where Rh is the Rydberg constant, n is the principal quantum number, and ΔE is the energy difference between two consecutive energy levels. As the principal quantum number of the Hydrogen atom increases, the spacing between adjacent energy levels decreases. This can be seen from the equation above, as the energy difference ΔE decreases as n^2 increases. Therefore, the energy levels become closer together as n increases. This can also be observed in the energy level diagram for Hydrogen, where the spacing between adjacent energy levels becomes smaller as the energy levels move further away from the nucleus.

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Answer:

3. When the number of turns, N is doubled, the strength of the electromagnet is also doubled

4. Doubling the voltage, doubles the strength of the electromagnet

5. The number of paper clips a 7.5 V battery would pick is approximately 28 paper clips

The number of paper clips a 7.5 V battery would pick is 59 paperclips

6. For the 50-coil electromagnet, the average number of paper clips a 1 V battery would pick is approximately 7 paperclips

For the 50-coil electromagnet, the average number of paper clips a 1 V battery would pick is 16 paperclips

Explanation:

3. The Magnetomotive Force, MMF = The Number of Turns on the Coil, N × The Current I Flowing in the Coil, I

∴ MMF = N × I

When the number of turns, N is doubled, the magnetomotive force, MMF is also doubled, and the strength of the electromagnet is doubled

4. Given that the voltage, V applied to the coil = The current, I flowing × The resistance, R of the coil, we have

V = I × R

Therefore, for a given constant resistance in the coil, doubling the voltage, doubles the current and therefore doubles the strength of the electromagnet

5. The average slope for the 25-coil electromagnet = (23 - 12)/(6 - 3) = 3.\(\bar 6\)

The number of paper clips a 7.5 V battery would pick = 12 + (7.5 - 3) × 11/3 = 28.5 paperclips  ≈ 28 paper clips

The average slope for the 50-coil electromagnet = (48 - 26)/(6 - 3) = 7.\(\bar 3\)

The number of paper clips a 7.5 V battery would pick = 26 + (7.5 - 3) × 22/3 = 59 paperclips

6. The slope calculated from a start point of approximately 0.4 V, is given as follows;

The slope for the 25-coil electromagnet = (12 - 6)/(3 - 0.4) = 30/13

Therefore, for the 25-coil electromagnet,  the average number of paper clips a 1 V battery would pick = 6 + (1 - 0.4) × 30/13) = 96/13 ≈ 7 paperclips

The slope for the 50-coil electromagnet = (26 - 13)/(3 - 0.4) = 5

Therefore, for the 50-coil electromagnet,  the average number of paper clips a 1 V battery would pick = 13 + (1 - 0.4) × 5 = 16 paperclips

3. When the number of revolutions, N, is twice, the electromagnet's strength is doubled as well.

4. Doubling the voltage doubles the electromagnet's strength.

5. The number of paper clips selected by a 7.5 V battery is 59.

6. For a 50-coil electromagnet, a 1 V battery would pull up around 7 paperclips on average. The average number of paper clips picked by a 1 V battery for a 50-coil electromagnet is 16 paperclips.

The magnetic field of an electromagnet is created by an electric current. Electromagnets are caused from conducting wire wriggled into a coil.

A magnetic field is created in the hole by a current passing through the wire.

The magnetic field production is increased by;

1) increasing the number of turns

2) increase the area of the loop

3) by moving the magnet faster

Answer for the following given options as follows;

3. When the number of revolutions, N, is twice, the electromagnet's strength is doubled as well. Because the no of coils in the circuit is directly proportional to the strength of electromagnet.

4. From the ohm's law principal doubling the voltage twice the current and hence the electromagnet's strength for a given constant resistance in the coil increases.

5. For the 25-coil electromagnet, the average slope is ;

\(\rm m_{avg}= \frac{23-12}{6-3} \\\\ m_{avg}= 3\)

The number of paper clips selected by a 7.5 V battery is;

\(\rm n = 12+ (7.5-+3)\times \frac{11}{3}\\\\n = 28.5\)

For the 50-coil electromagnet, the average slope;

\(\rm (m_{avg})_{50}= \frac{48-26}{6-3} \\\\\ \rm (m_{avg})_{50}= 7\)

The number of paper clips selected by a 7.5 V battery is;

\(\rm N = 26+(7.5-3) \times \frac{22}{3} \\\\ N= 59\)

The following is the slope determined from a starting position of around 0.4 V:

For the 25-coil electromagnet, the slope is;

\(\rm m_{25}=\frac{12-6}{3-0.4} \\\\\ m_{25}=\frac{6}{2.6} \\\\ m_{25}=\frac{30}{13}\)

As a result, the average number of paper clips a 1 V battery would choose for the 25-coil electromagnet is;

\(\rm N_{25}=6+ (1-0.4)\times \frac{30}{13} \\\\ N_{25}=\frac{96}{13} \\\\ N_{25}= 7 \ paperclip\)

For the 50-coil electromagnet, the slope is;

(26 - 13)/(3 - 0.4) = 5.

As a result, the average number of paper clips picked by a 1 V battery is;

\(\rm N'_{50}= 13+ (1-0.14)\times 5 \\\\ N'_{50}=16\)

Hence,the average number of paper clips picked by a 1 V battery for a 50-coil electromagnet is 16 paperclips.

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The first one!

Hope this helps pls mark as brainliest :)

Answer:

Models change to accommodate new discoveries.

Explanation:

Scientific models are based on current scientific knowledge. This means that when new discoveries are made they are subject to change.