Marshall paddled his kayak 919meters across a lake at a constant velocity. He moved that distance in 10. 0minutes. What was his velocity?

Answer:

Runner B

Explanation:

its just displacement over change in time

Answer: a fuse wire is a wire of high resistance and low melting point.

solution given there

The spectrum seen is the absorption spectrum. The wavelengths corresponding to those of the material through which light is being passed are absorbed, which leads to the occurrence of several dark lines in the spectrum.

White light when the incident with the object caused it to absorb the wavelengths corresponding to its excitation energy. These are characteristics of a particular atom/molecule.

Hence using this those can be identified. The absorption of the external energy leads the atoms to go to an excited state, hence the temperature increases.

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Answer:

A generator is a device that converts mechanical energy into electrical energy by rotating a coil of wire in a magnetic field.

Answer:

Algunos se mueven en dos direcciones y algunos se mueven en las cuatro direcciones.

Explicación:

Para investigar la posición del cuerpo en general, la posición de la cabeza, la posición de los brazos y manos y los pies tienen algunos movimientos específicos. Algunos se mueven hacia arriba y hacia abajo significa en dos direcciones mientras que el otro se mueve en todas las direcciones. Los brazos se mueven solo hacia adelante y hacia atrás, mientras que, por otro lado, los pies, la mano y la cabeza se mueven hacia la izquierda, la derecha y hacia arriba y hacia abajo.

Answer:

Wind-driven waves, or surface waves,

Explanation:

Answer:

7.08

Explanation:

Answer:

leaving a copper penny in vinegar until it turns green

Explanation:

According to the charge that is stored on the positive plate, the order is B, A, C, D, and E, from biggest to smallest.

The charge stored on the positive plate of a capacitor is given by Q = CV, where Q is the charge, C is the capacitance, and V is the voltage. Since the capacitors are connected in parallel, they all have the same voltage V. Therefore, the capacitor with the largest capacitance will have the largest charge stored on its positive plate.

Ranking the capacitors from largest to smallest based on their capacitances, we get:

B) A = 2 cm, C = 8 nF

A) A = 4 cm, C = 8 nF

C) A = 2 cm, C = 4 nF

D) A = 4 cm, C = 2 nF

E) A = 1 cm, C = 1 nF

Therefore, the ranking from largest to smallest based on the charge stored on the positive plate is: B, A, C, D, E.

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Answer:

One would need to know how far apart the towns are:

T = SA / 40      time it takes for first cyclist to travel S1

T = SB / 60       time it takes for cyclist B to travel distance S2

SA + SB = S     the distance between the towns

SB = 60 / 40 SA = 1.5 SA

SA + 1.5 SA = S

S = 2.5 SA where cyclist travels distance SA

The time will depend on the separation of the towns.

As waves travel into the denser medium, they slow down and wavelength decreases.

Explanation:

The denser the medium the slower the waves (speed of light) travels.

◦•●◉✿When the body approaches the speed of light, the body's length appears to contract in the direction of travel, and its mass appears to increase from the point of view of a stationary observer. Only photons move to light velocity. They don´t have length.✿◉●•◦

A.Bohr

His model postulated the existence of energy levels or shells of electrons. Electrons could only be found in these specific energy levels; in other words, their energy was quantised, and couldn’t take just any value. Electrons could move between these energy levels but had to do so by either absorbing or emitting energy.

A. Bohr!

This answer is correct because I read the information.

Answer:

D

Explanation:

I think those are weakest

Answer:

D. ionic bonds

Explanation:

ionic bonds are the weakest as its between ions

hydrogen bonds are stronger as it is electrostatic force so its strong

metallic bonds are the sharing of many detached electrons between many positive ions they call it a glue because they are hardly breakable

Answer:

60 - 45 = A. 15

Explanation:

Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.

60 - 45 = A. 15. Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.

A flat or highly polished surface called a plane mirror reflects light or waves to create an image. It is a polished, smooth surface that creates a virtual representation of the actual object.

A plane mirror is a surface on which an image can only be produced by at least two light beams. The intersection of these two beams can occur inside the mirror or appear to occur somewhere behind the mirror.

The image that follows illustrates how an object appears when viewed via a plane mirror.

Therefore, 60 - 45 = A. 15. Subtracted because the plane mirror at an angle is incidence of 60°, so then in order to find the value it would be 60-45 and not adding it or dividing and multiplying to find the value thus the answer is 15.

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Answer:

Density

Explanation:

Everything else is a chemical property

Answer:

density

Explanation:

density is the measurable physical property of a substance

The stone will strike the ground after approximately 1.77 seconds.

To determine the time interval it takes for the stone to strike the ground, we can use the equations of motion. The stone is thrown directly upward, so its initial velocity is positive (+5.5 m/s) and the acceleration due to gravity is negative (-9.8 m/s²).

First, we can find the time it takes for the stone to reach its highest point using the equation:

v = u + at

where v is the final velocity, u is the initial velocity, a is the acceleration, and t is the time.

At the highest point, the final velocity is zero, so we have:

0 = 5.5 - 9.8t₁

Solving for t₁, we find t₁ ≈ 0.56 seconds.

Next, we can find the total time of flight by considering the time it takes for the stone to reach its highest point and then return to the ground. The total time is given by:

t_total = 2t₁

Substituting the value of t₁, we have:

t_total = 2 * 0.56 ≈ 1.12 seconds.

However, this time represents only the time to reach the highest point. To find the total time for the stone to strike the ground, we need to consider the time it takes to fall from the highest point to the ground. The time for free fall can be calculated using the equation:

s = ut + 0.5at²

where s is the distance, u is the initial velocity, a is the acceleration, and t is the time.

The distance traveled during free fall is equal to the initial height of the stone (12.7 m). We set s = -12.7 m (negative because the stone is moving downward) and solve for t:

-12.7 = 0 + 0.5 * (-9.8) * t²

Simplifying the equation, we get:

4.9t² = 12.7

t² ≈ 2.59

Taking the square root of both sides, we find:

t ≈ √2.59 ≈ 1.61 seconds.

Finally, we add the time it takes to reach the highest point and the time for free fall:

t_total = t₁ + t ≈ 0.56 + 1.61 ≈ 2.17 seconds.

However, the time calculated above represents the total time of flight, including the upward and downward motion. To find the time interval for the stone to strike the ground, we subtract the time it takes to reach the highest point from the total time:

t_interval = t_total - t₁ ≈ 2.17 - 0.56 ≈ 1.61 seconds.

Therefore, after approximately 1.77 seconds (rounded to two decimal places), the stone will strike the ground.

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According to Plumbing 101 principles governing blood flow through the vessels, the statement "Flow depends on pressure difference, but not the absolute pressure" is true.

In the context of Plumbing 101 principles, blood flow through the vessels can be understood by applying the laws of fluid dynamics. According to these principles, the statement that holds true is that flow depends on pressure difference, but not the absolute pressure.

Pressure difference refers to the variance in pressure between two points in a fluid system. In the case of blood flow, it refers to the pressure difference between the point of origin (such as the heart) and the destination point (such as organs or tissues). The pressure difference creates a driving force for blood to flow from higher pressure regions to lower pressure regions.

While the absolute pressure at the origin and destination points may affect the overall pressure difference, it does not directly impact the flow rate of blood. Flow is primarily determined by the pressure difference rather than the absolute pressure at the specific points. Other factors, such as the diameter of the vessel, viscosity of the blood, and the resistance offered by the vessel walls, also influence blood flow.

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Answer:

?

Explanation:

Answer:

is changing in direction, but constant in magnitude

Explanation:

This question is a bit tricky since the velocity of the satellite is changing, but the speed is constant.

Speed is simply a measure of how fast you are going. It doesn't matter where you're going, just how quickly.

Velocity, on the other hand, does care about which direction you're going. For example, it could be then when you travel right, your velocity is positive, and when you travel left, your velocity is negative. This is the similar for a 2D shape like a circular orbit

Since we know velocity is changing, there must be acceleration which changes that velocity (since acceleration is the change in velocity: going from 0 to 60 mph, for example)

Thus, with a non-zero net acceleration, we know that there must be a force that is changing in direction, but constant in magnitude (since the orbit is a circle, and always attracted to the center of the Earth at equal distance).

The reason you have to keep running your engine when your car is moving at a constant velocity on the highway is to overcome frictional forces.

So, the correct answer is C.

When your car is moving along the highway at a constant velocity, the net force acting on it is zero. However, you still need to keep running your engine to overcome the frictional forces acting on your car.

Frictional forces such as air resistance, rolling resistance, and the resistance caused by the engine and transmission of your car all act against the motion of your car.

Therefore, your engine needs to continue to produce power to counteract these forces and maintain your car's speed.

Additionally, keeping your engine running is important to power essential features of your car, such as your radio and air conditioning, and to prepare for sudden acceleration needs, such as when merging onto a highway or passing another vehicle.

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drug craving, a physiological reaction to drug usage, can lead to withdrawal symptoms if the medication is not taken as prescribed. Addiction

According to definitions, addiction is a recurrent, chronic disorder marked by obsessive drug seeking and to use despite negative effects. † As a result of functional changes to reward, stress, or self-control brain circuits, it is regarded as a brain disorder.

Addictive behavior is defined as any activity, substance, item, or habit that has taken over a person's life towards the exclusion of all other pursuits or that has started to negatively impact the person or others medically, mentally, or socially.

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Answer:

that the acceleration is negative therefore it is directed to the left.

Explanation:

To find the acceleration of a system we must use Newton's second law

          ∑ F = m a

To apply this equation to our case we set a reference system where the direction to the right is positive.

We have 3 forces, a force F₁ = -20 N, a negative sign indicates that it is directed to the left, two forces F₂ and F₃ of magnitude 8N each directed to the right.

We substitute

            -F₁ + F₂ + F₃ = m a

           - 20 +8 + 8 = m a

             -4 = m a  

             a = -4 / m

Here we can see that the acceleration is negative therefore it is directed to the left.

Answer:

D.

Explanation:

The answer should be D. because if it increases by a factor of 2 then it will decrease at a factor of 4.

I hope it helps! Have a great day!

Anygays-

You would need to increase the height of the piston to decrease the pressure inside the cylinder while keeping the temperature constant.

This is because the pressure and volume of a gas are inversely proportional, meaning that as one increases, the other decreases, as long as the temperature is constant. Therefore, by increasing the volume of the gas, you would be decreasing the pressure. It is important to note that this change would need to be made slowly and carefully to avoid any sudden changes in pressure or temperature.

To further explain this, when the gas is confined to a cylinder with a movable piston, the pressure of the gas is determined by the force exerted by the gas molecules on the walls of the cylinder. If the volume of the cylinder decreases, the gas molecules will have less space to move around in, and they will collide more frequently with the walls of the cylinder, resulting in an increase in pressure. Conversely, if the volume of the cylinder increases, the gas molecules will have more space to move around in, and they will collide less frequently with the walls of the cylinder, resulting in a decrease in pressure.

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Answer:

This question is incomplete

Explanation:

This question is incomplete because of the absence of options. However, one material that is good candidate for conducting electricity without reacting with other materials is metallic vanadium dioxide. This is because of the inability of this electrical conductor to conduct heat (an unusual property for all other electrical conductors) and thus makes it difficult for it to react with other materials (since an increase in temperature increases possibility of a reaction).

Answer:

hope it helps make brainlliest ty

density(ρ) = mass (m) : volume (V)

Answer:

Scientists predict the location of electrons in the modern model of the atom by using the Heisenberg uncertainty principle.

A car moving to the right will still go to the right when the braking force is applied is about negative acceleration.

Any procedure where the velocity varies is referred to as acceleration. There are only two ways to accelerate: changing your speed or changing your direction, or changing both. This is because velocity is both a speed and a direction.

When an item experiences negative acceleration, its velocity changes in a negative direction, which can suggest that it is moving either slower or faster. In physics, a change in an object's velocity is referred to as "acceleration."

Since this change in velocity is a vector quantity, it denotes both magnitude and direction. Positive velocity is also a vector, and experiencing negative acceleration means that something is slowing down.

Therefore, A car moving to the right will still go to the right when the braking force is applied is about negative acceleration.

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