as when the child walks from the outer edge of a rotating merry-go-round to the center of rotation, then the angular velocity of the merry-go-round will

Answer:

Frequency describes the number of waves that pass a fixed place in a given amount of time.

Answer: During sexual reproduction, the genetic material of two individuals is combined to produce genetically-diverse offspring that differ from their parents.  The genetic diversity of sexually-produced offspring is thought to give species a better chance of surviving in an unpredictable or changing environment

Options A, B & D are true.

We are dealing with the concept of inertia.

This means that inertia is the force that keeps an object at rest or in constant motion.

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If a dart shot at a monkey is traveling 6 m/s horizontally, while simultaneously traveling 9 m/s downward, then the total velocity of the dart would be 10.81 m /s.

The total displacement covered by any object per unit of time is known as velocity. It depends on the magnitude as well as the direction of the moving object.

As given in the problem a  dart shot at a monkey is traveling 6 m/s horizontally, while simultaneously traveling 9 m/s downward.

Total velocity of the dart = √ ( 6² + 9² )

                                         = 10.81 m /s

Thus, the total velocity of the dart would be 10.81 m /s.

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Answer: If air drag can be neglected, how does this compare with the horizontal component of its velocity at other points? Minimum speed occurs at the top, which is the same as the horizontal component of velocity anywhere along the path.

Explanation:

Answer: At the highest point in the trajectory the ball will have the minimum speed as the vertical component becomes zero. The horizontal component of the velocity never changes as there is no force acting in horizontal direction.

Explanation:

Hope this helps.

Answer:

1438.4 N

Explanation:

Applying,

F = kqq'/r²................... Equation 1

Where F = Electrostatic force on the balloons, k = coulomb's constant, q = charge on the first balloon, q' = charge on the second balloon, r = distance between the two ballons.

From the question,

Given: q = q' = 4.0×10⁻⁵ C, r = 0.1 m

Constant: k = 8.99×10⁹ Nm²/C²

Substitute these values into equation 1

F = ( 4.0×10⁻⁵×4.0×10⁻⁵×8.99×10⁹)/0.1²

F = 14.384/0.01

F = 1438.4 N

The magnitude of the repulsive force will be 1438.4 N.Opposite charges repel each other by a force known as the repulsive force.

The forces repel each other is known as the repulsive force.According to Coulomb's law, like charges repel each other.In Magnetism repulsive force between magnets of same orientation occurs.

The given data in the problem is;

q₁,q₂ is the charges =4.0 x 10 -5C 78

d is the distance = 0.10 m

F is the magnitude of the repulsive force=?

The magnitude of the repulsive force will be;

\(\rm F =\frac{ Kq_1q_2}{r^2} \\\\ \rm F =\frac{ 8.99 \times 1^9 \times 4.0 \times 10^-5 \times 4 \times 10^-5}{(0.10)^2} \\\\ \rm F =1438.4 N.\)

Hence the magnitude of the repulsive force will be 1438.4 N.

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Answer:

it is A

Explanation:

i had the question

The acceleration of block B is 4.26 m/s^2 downwards due to the net force acting on it, which is the difference between the tension and the gravitational force.

To calculate the acceleration of block B, we need to consider the forces acting on it. Block B is connected to block A by a cable that has a tension of 3 N. Block B is also subject to a gravitational force of 39.2 N (4 kg x 9.8 m/s^2).

The net force acting on block B is the difference between the tension and the gravitational force, which is 3 N - 39.2 N = -36.2 N. Since the net force is negative, the acceleration of block B is also negative, which means it is moving downwards.

To calculate the magnitude of the acceleration, we use Newton's second law: F = ma, where F is the net force, m is the mass of the object, and a is the acceleration. Solving for a, we get a = F/m = -36.2 N / 4 kg = -9.05 m/s^2. The negative sign indicates that the acceleration is downwards.

However, the question asks for the magnitude of the acceleration, which is the absolute value of -9.05 m/s^2, which is 9.05 m/s^2. Therefore, the acceleration of block B is 4.26 m/s^2 downwards.

In conclusion, the acceleration of block B is 4.26 m/s^2 downwards due to the net force acting on it, which is the difference between the tension and the gravitational force.

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An acceleration of 5m/s² means that the velocity of the body changes by 5 meters per second every second.

When a body has an acceleration of 5m/s², it means that the velocity of the body changes by 5 meters per second every second. Acceleration is the rate at which an object changes its velocity over time. In this case, if a body has an acceleration of 5m/s², it means that its velocity is changing by 5 meters per second every second.

This could mean that the body is either increasing or decreasing its speed or changing its direction, depending on the direction of the acceleration vector. The magnitude of the acceleration gives us an idea of how quickly the velocity is changing, while the direction tells us in which direction the velocity is changing.

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--The complete question is, Explain in your own words what it means for a body to have an acceleration of 5m/s²--

Explanation:

yup, it's D following Newton's third law of motion

Answer:

is sugar and water becouse sugar can solote the water

As the concentration of reactants decreases in a galvanic cell, the magnitude of E(cell) will generally b) decrease.

This is because E(cell) is dependent on the concentrations of the reactants and products according to the Nernst equation. When reactant concentrations decrease, the reaction quotient (Q) increases, leading to a smaller difference between the standard cell potential (E°cell) and the actual cell potential (E(cell)).

Consequently, this results in a decreased E(cell) value. Keep in mind that this is a general trend, and specific cases may vary depending on the reaction and conditions.

Therefore, the correct answer is b) decrease.

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The force needed to accelerate the  trick rider of mass 75 kg and the pink flaming motorcycle of mass 225 kg is 1500 N.

Force can be calculated by multiplying mass by acceleration. The S.I unit of force is Newton (N).

In order to calculate the force needed to accelerate the  trick rider and the pink flaming motorcycle, we use the formula below

Formula:

Where:

From the question,

Given:

Substitute these values above into equation 1

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The volume of the gas is 0.072 L. we can use the ideal gas law to solve for the volume of the gas. The ideal gas law is PV=nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin.

We are given the pressure, temperature, and number of moles (which we can calculate from the mass of the gas and its molar mass). Rearranging the ideal gas law to solve for V, we get V=nRT/P. Plugging in the values we have, we get V=(2.0 g Ne)/(20.18 g/mol)(0.08206 L*atm/mol*K)(360 K)/(1.5 atm)=0.072 L.

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Answer:

7840

Explanation:

K.e=1/2mv^2

=1/2(20)(28.0)^2

=7840J

Gas particles can change to solid particles if the temperature decreases.

The state of matter of a substance is determined by its temperature and pressure. When the temperature of a gas decreases, its particles lose kinetic energy and slow down. This decrease in kinetic energy leads to a decrease in the average speed of gas particles.

As the temperature continues to decrease, the particles lose energy and move closer together. At a certain temperature known as the condensation point or the freezing point, the gas particles no longer have enough energy to overcome the intermolecular forces holding them together.

At this point, the gas undergoes a phase transition and changes into a solid. The process of gas turning into a solid is called condensation or freezing, depending on the specific substance.

During condensation, the gas particles arrange themselves in a more orderly and structured manner, forming a solid. The transition from gas to solid involves the release of energy, known as heat of fusion.

In summary, when the temperature of a gas decreases below its condensation or freezing point, the gas particles lose energy, slow down, and eventually come together to form a solid.

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Answer:

its D

Explanation:

The kinetic energy is the energy of motion.

The energy an object has as a result of motion is known as kinetic energy. A force must be applied to an object in order to accelerate it. We must put in effort in order to apply a force. After the work is finished, energy is transferred to the item, which then moves at a new, constant speed.

An item in motion has energy, which is called kinetic energy. Motion in space, you walking down the street, and the rotation of the planet around the sun are all examples of kinetic energy. Kinetic energy has the following formula: K.E. = 1/2 m*v², where m is the object's mass and v is its square velocity.

Any object in motion is using kinetic energy, so the energy of motion is

kinetic energy.

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Answer: Newton's third law of motion is naturally applied to collisions between two objects. In a collision between two objects, both objects experience forces that are equal in magnitude and opposite in direction.

Explanation: So it is #2

The change in length, ?L, of a material due to thermal expansion is usually a very small fraction of the original length of the material. For example, the coefficient of linear thermal expansion of steel is around 11×10^-6 per degree Celsius. This means that for every degree Celsius increase in temperature, the length of a steel rod will increase by about 11 parts in a million.

To measure such small changes in length, very sensitive instruments are required, such as a strain gauge or an interferometer. On the other hand, measuring the original length of the rod, L, can be done relatively crudely with a meter stick or tape measure, since the length is typically several orders of magnitude larger than the change in length due to thermal expansion.

Therefore, to accurately measure the change in length of a material due to thermal expansion, it is crucial to use a highly sensitive instrument capable of detecting small changes in length, while measuring the length of the rod itself can be done with less precision.

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Answer: true

Explanation:

Answer:

George Washington

Explanation:

Answer:

well for me

Explanation:

It was George Washington

The time taken by Kamal's family to drive on the second day is 6.45 hours.

What is speed?

Speed is defined as the ratio of the time it takes for a body to cross a distance to the time it takes.

The time is calculated as:-

For 4 hours of driving at an average speed of 60 miles per hour, the distance covered is,

d = 60 x 4 = 240miles

Miles remaining for the second day is,

627 - 240 = 387 miles

Time taken to cover 387 miles second day is,

T = 387 / 60 = 6.45 hours

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Answer:

HERE IS YOUR ANSWER

Explanation:

1. The machines makes pur life easier.

2. It makes us do our works faster.

3. It does all the works that are harder for us.

Hope it helps you.

Explanation:  

First of all some do most of the work for us

Second, us humans are quite lazy

Third, it makes it quite easier in life

Answer:bowling ball has greater kinetic energy

Explanation:

Kinetic energy of bowling ball:

mass=m=5kg

Velocity=v=6m/s

Kinetic energy =ke

Ke=0.5 x m x v x v

Ke=0.5 x 5 x 6 x 6

Ke=90J

Kinetic energy of ship:

mass=m=120000kg

velocity=v=0.02m/s

Ke=0.5 x m x v x v

Ke=0.5 x 120000 x 0.02 x 0.02

Ke=24J

The bowling ball has greater kinetic energy than the ship.

The kinetic energy of an object is the work an object can do by its motion. Kinetic energy is a scalar quantity as it does have magnitude only.

When work is done, energy is transferred, and the object moves at a new speed. The energy is transferred kinetic energy, which depends on the mass and speed.

The SI unit of kinetic energy is Joule and the CGS unit of kinetic energy is erg. The expression of kinetic energy that is used to calculate it is:

K.E. = (1/2) mv²

The mass and the velocity of the bowling ball are 5 Kg and 6 m/s respectively.

The kinetic energy of the bowling ball = (1/2) × 5× (6)² = 90 J

The mass and the velocity of the ship are 120000 Kg and 0.02 m/s respectively.

The kinetic energy of the bowling ball = (1/2) × 120000× (0.02)² = 24 J

Therefore, the kinetic energy of the bowling ball is greater than the ship.

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Turning down the heat under a pot of water would weaken convection currents.

Convection currents in a pot of water are formed due to the difference in temperature between the bottom and top layers. When the heat is reduced, the temperature gradient decreases, leading to a weaker driving force for convection. As a result, the convection currents become less vigorous or may even cease altogether. The slower movement of the water particles hampers the transfer of heat, leading to slower heating or cooling of the water. Therefore, turning down the heat under a pot of water diminishes the intensity of convection currents and affects the rate at which the water heats up or cools down.  

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Answer:

I'm not positive but I think the answer is Yes, because both scientific laws and theories are based on evidence.

Explanation:

Sorry I don't have notes on this, hope this helps! :)

Answer:

C. Leadville has a higher elevation.

Explanation:

In those two cities depicted in the picture, one city being further west or east does not cause significant temperature change. (Too north or too south can change this but this is not what we are supposed to find.) Rules out A.

Latitude is basically where a city is on the map, either north or south, and they have the same latitude, so B doesn't make sense.

A difference between an average high and low does nothing to why it would be colder in one place over another.

C is the logical answer for this question. The elevation, or how high you're elevated, changes the temperature. The higher the elevation, the colder it becomes since you're more closer to the clouds, and the clouds are actually really cold. Did you know that? this is why we cannot breathe outside in airplanes, it is way too cold and not enough CO2 to survive.

Using a cable with a tension of 1350 N , a tow truck pulls a car 5.00 km alone a horizontal roadway. Therefore,

(a) Cable work: 6,750,000 J horizontally.

(b) Cable work: 6,308,250 J at 35.0° above horizontal.

(c) No work by gravity.

To calculate the work done by the cable in each scenario, we need to consider the angle between the direction of the force applied and the displacement.

(a) If the cable pulls horizontally (0° above the horizontal):

In this case, the angle between the force and the displacement is 0 degrees, so the work done can be calculated as:

Work = Force * Displacement * cos(Ф)

Work = 1350 N * 5000 m * cos(0°)

Work = 1350 N * 5000 m * 1

Work = 6,750,000 J

The cable does 6,750,000 Joules of work on the car when it pulls horizontally.

(b) If the cable pulls at 35.0 degrees above the horizontal:

In this case, the angle between the force and the displacement is 35.0 degrees, so the work done can be calculated as:

Work = Force * Displacement * cos(Ф)

Work = 1350 N * 5000 m * cos(35.0°)

Work = 1350 N * 5000 m * 0.819

Work = 6,308,250 J

The cable does approximately 6,308,250 Joules of work on the car when it pulls at 35.0 degrees above the horizontal.

(c) The work done by gravity on the car is zero because gravity acts vertically downward, perpendicular to the displacement along the horizontal roadway. Therefore, the gravitational force does not contribute to the work done on the car in this scenario.

In both cases (a) and (b), the cable does the same amount of work on the tow truck as on the car since they are connected by the cable. So the work done by the cable on the tow truck would be equal to the values calculated above: 6,750,000 J in case (a) and 6,308,250 J in case (b).

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