You observe the h-beta line in a star at a wavelength of 483.5 nm. what is the velocity of the star relative to you?

The speed of the skier on reaching the bottom of the slope is 25.43 m/s.

Kinetic energy on reach the bottom = P.E - 10 kJ

Kinetic energy on reach the bottom = (60)(9.8)(50) - 10 kJ

Kinetic energy on reach the bottom = 19.4 kJ = 19,400 J

K.E  = ¹/₂mv²

2K.E = mv²

v² = 2K.E/m

v² = (2 x 19,400)/(60)

v² = 646.667

v = √646.667

v = 25.43 m/s.

Thus, the speed of the skier on reaching the bottom of the slope is 25.43 m/s.

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Answer:

the frequency of the wave increases

Answer:

The wavelength of the wave increases

Explanation:

Just did the test

It moves at a constant linear speed around it. Yet, the linear velocity at any point on the blades is constantly varying and accelerating.

Acceleration typically indicates a change in speed, but not necessarily. An item that follows a circular course while maintaining a constant speed is still moving forward because the direction of its motion is shifting.

Most likely, you picture something racing up when you think about acceleration. But a moving thing accelerates as it slows down. A change in speed is what acceleration is, so keep that in mind. The speed of a car that is slowing down decreases.

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It will take 41.1 feet to come to a complete stop, if the deceleration is 10 m/s².

Initial speed, u = 35 mph = 35 × 1.61 × (5/18) =  15.65 m/s

Final speed, v = 0

By the first equation of velocity,

v = u + at

0 = 15.65 - 10 × t

Time taken to complete stop, t = 15.65/10 = 1.56 seconds

Now by the second equation of motion,

Distance travelled to complete

S = ut - 0.5×a×t²

S = 15.65×1.56 - 0.5×10×1.56²

S = 12.246 m

or S = 12.246 × (40/12)

S = 40.82 feet

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--The given question is incomplete, the complete question is:

"when traveling at 35 mph it will take you ____ feet to come to a complete stop, if the deceleration is 10 m/s²."

Answer: velocity

Explanation: it's the rate of change of the objects position/ consistent change

Answer:

That would be velocity since its a change in derection

Explanation:

The rate of change of the depth of the water can be calculated using the formula:

rate of change of depth = rate of change of volume/area of the base

The volume of a cone can be calculated using the formula:

volume = (1/3) x pi x r^2 x h

where r is the radius of the base and h is the height of the cone.

Given that the cone leaks water at a rate of 10 ft^3/min, the rate of change of volume is -10 ft^3/min (negative because the volume is decreasing).

The area of the base can be calculated using the formula:

area of base = pi x r^2

Given that the height of the water is 10 ft, we can calculate the radius of the base using the formula:

10 = (1/3) x pi x r^2 x h
r^2 = 30 / pi
r = sqrt(30 / pi)

So the area of the base is:

area of base = pi x (sqrt(30/pi))^2
area of base = 30/pi

Now we can substitute the values into the formula for the rate of change of depth:

rate of change of depth = -10 / (30/pi)
rate of change of depth = -128125π ft/min

Therefore, the depth of the water decreases at a rate of 128125π ft/min when the water is 10 ft high and the cone leaks water at a rate of 10 ft^3/min.

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Answer: 6.25 m/s^2

Explanation:

The distance between Vinny and the ramp is 200m

And he has 8 seconds (At max) to reach that distance.

The initial velocity is 0m/s

The initial position is 0m

Now, we want to find the constant acceleration in order to do this, so suppose that we have a constant acceleration A.

a(t) = A.

To have the velocity, we must integrate over time, and remember that the constant of integration is equal to zero because the initial velocity is zero.

v(t) = A*t

For the position, we integrate again over time.

p(t) = 0.5*A*t^2

And we want to travel 200m in 8 seconds, then:

p(8s) = 200m

0.5*A*(8s)^2 = 200m

A*32s^2 = 200m

A = 200m/32s^2 = 6.25 m/s^2

This is the minimum acceleration in order to do this, if Vinny has a larger acceleration he will travel the 200m in a smaller time.

1) electromagnetism

2) magnetic field

3) electric field

4) strength

Electromagnetism is the fundamental principle behind the functioning of an electric generator. An electric generator works on the principle of electromagnetic induction, which is the process of generating an electric current in a conductor by exposing it to a changing magnetic field.

In a generator, a wire coil is rotated inside a magnetic field, which induces an electric current in the coil. The magnetic field can be created by a permanent magnet or an electromagnet. An electromagnet is made by passing an electric current through a coil of wire, which generates a magnetic field.

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As an interstellar cloud of hydrogen gas shrinks in size, its temperature increases due to the principle of conservation of energy.

When the cloud contracts, gravitational potential energy is converted into thermal energy. The gravitational force pulling the gas inward does work on the gas particles, increasing their kinetic energy and causing them to move faster. As the particles move faster, collisions between them become more frequent and more energetic, resulting in an overall increase in temperature. This process is governed by the ideal gas law, which states that the pressure of a gas is directly proportional to its temperature when the volume is held constant. As the interstellar cloud contracts, its volume decreases, leading to an increase in pressure. According to the ideal gas law, this increase in pressure is accompanied by an increase in temperature.

Therefore, as the interstellar cloud of hydrogen gas shrinks in size, its temperature increases as gravitational potential energy is converted into thermal energy through the increase in kinetic energy of the gas particles.

FULL QUESTION: As an interstellar cloud of hydrogen gas shrinks in size, its temperature increases,

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Your hands must be held 869.65 meters apart to be separated by 2.9 nano-light-seconds.

To calculate the distance between your hands for them to be separated by 2.9 nano-light-seconds, we need to use the speed of light, which is approximately 299,792,458 meters per second.
We can start by converting the distance of 2.9 nano-light-seconds into meters. To do this, we multiply the speed of light by the time it takes for light to travel 2.9 nanoseconds:
2.9 ns x 299,792,458 m/s = 869.65 meters
Therefore, your hands must be held 869.65 meters apart to be separated by 2.9 nano-light-seconds. To put this distance into perspective, it is equivalent to about 9 football fields laid end-to-end or roughly the height of the Burj Khalifa, the tallest building in the world.
It's important to note that this distance is incredibly small on a cosmic scale, as light can travel much further in a fraction of a second across the vast expanse of space. However, it demonstrates the incredible speed and precision of light as well as the importance of precise measurements in scientific research.

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The main answer is:The volume of water displacement of the floating oil rig is 339,394 cubic feet.Explanation:A floating oil rig is anchored in the seabed with cables giving a net pull of 2,250,000 lbf down. Here is how to determine how large a water displacement volume that leads to:

Let us recall the principle of Archimedes: It states that "when an object is fully or partially immersed in a liquid, it experiences an upward force that is equal to the weight of the liquid displaced."The upward force exerted on the floating oil rig is equal to the weight of the water displaced by it, which can be determined using the following formula:Upward force = Weight of water displacedThe formula for the weight of water displaced is:Weight of water displaced = Volume of water displaced × Density of waterwhere

:Volume of water displaced = VDensity of water = ρWe know that the upward force exerted on the oil rig is equal to the net pull of the cables, which is 2,250,000 lbf down. This is also the weight of the oil rig. Therefore, we can say that:Upward force = Weight of water displaced2,250,000 lbf = V × ρ × gwhere:g = acceleration due to gravity = 32.2 ft/s² (this is the value used in the United States)ρ = density of water = 62.4 lb/ft³ (this is the value used in the United States)Solving for V:V = 2,250,000 lbf / (ρ × g)V = 2,250,000 lbf / (62.4 lb/ft³ × 32.2 ft/s²)V ≈ 339,394 ft³Therefore, the volume of water displaced by the floating oil rig is 339,394 cubic feet.

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A.1.2°C

The First Law of Thermodynamics states that heat is a form of energy, and thermodynamic processes are therefore subject to the principle of conservation of energy.

To find internal energy, you have to add the heat added in the system and work done in the system because the work done is not lost but rather it is added in the system.

Step 1

a)let

to add the energy it must have the same measure unit, so let's convert calories into Julies

remember that

b) now, replace in the formula

now, we have the change of internal energy

Step 2

now, let's find the change in temperature

Use the calorimetry formula.

where m is the mass, Q = heat energy, c = specific heat capacity, and ∆T = change in temperature

a)

let

now,

so, the answer is

A.1.2°C

Answer:

Joule is the SI unit of work. 1 Joule is amount of work done when a force of 1 Newton displaces a body through a distance of 1m in the direction of the force applied.

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Answer:

Cell is the unit which has two terminals one positive and one negative. A battery is a group of cells in which one negative terminal is attached to one positive terminal.

Cell:- Cell is the smallest unit of a battery.

Battery:-A battery is combination of cells.

The correct option is a. The distance between stars in a galaxy is so large that stars are rarely affected

During a galaxy merger, galaxies come into close proximity and interact gravitationally. However, the space between individual stars within a galaxy is vast compared to their sizes. The average distance between stars in a galaxy is typically many light-years. As a result, the chances of individual stars directly colliding or interacting with each other during a galaxy merger are extremely low.

While galaxies may experience gravitational disturbances and interactions that can influence the overall structure and dynamics of the galaxy, individual stars within the galaxy generally remain unaffected. Their large separation distances ensure that most stars continue on their respective orbits without direct collisions or significant interactions.

Galaxy mergers occur when two or more galaxies come close together and interact gravitationally. During this process, the galaxies can undergo significant changes in their structure and dynamics. However, individual stars within a galaxy are generally not directly affected by the merger, and there are a few key reasons for this:

Large Interstellar Distances:

The space between stars within a galaxy is vast compared to the sizes of the stars themselves. The average distance between stars in a galaxy is typically measured in light-years, which is equivalent to trillions of kilometers. These enormous distances mean that the chances of stars directly colliding or interacting with each other during a galaxy merger are extremely low. The vast majority of stars in a galaxy will continue on their individual orbits without coming into close contact with other stars.

Stellar Collisions are Rare:

While galaxy mergers can lead to changes in the overall structure and dynamics of galaxies, they generally do not result in significant direct collisions between individual stars. The low density of stars in galaxies means that the chances of two stars colliding during a merger are exceptionally low. The vast distances between stars act as a buffer, reducing the likelihood of any physical interactions between them.

Gravitational Influence:

During a galaxy merger, the main gravitational interactions occur between the galaxies themselves, as well as between the gas, dust, and other interstellar material present in the galaxies. These gravitational interactions can cause tidal forces and distortions in the galaxies' shapes, but they typically do not directly affect individual stars. The overall gravitational field of the merged galaxies will influence the motion and orbits of the stars, but the stars themselves remain relatively undisturbed.

While individual stars may not be significantly affected by a galaxy merger, the merger process can trigger enhanced star formation activity and the creation of new stars. The gravitational interactions and disturbances caused by the merger can compress gas and trigger the collapse of molecular clouds, leading to the formation of new stellar nurseries and subsequent star formation.

In summary, the vast distances between stars in a galaxy, the low stellar densities, and the primarily gravitational nature of galaxy mergers all contribute to the relative lack of direct effects on individual stars. The majority of stars within a galaxy will continue their independent orbits during a merger, while the overall structure and dynamics of the merged galaxy are influenced by the gravitational interactions between the galaxies themselves.

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To draw the arrows showing the orientation of the compass needle at each point, we need to know the magnetic field lines of the bar magnet.

The arrows on the points in between the north and south poles should be curved, following the shape of the magnetic field lines. The arrow on the rightmost point, representing the compass needle, should align itself with the magnetic field lines and point towards the south pole.

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The diagram for given question is as follows:

The difference between an E6 galaxy and an E2 galaxy primarily lies in their shapes and ellipticity.

Elliptical galaxies are classified based on their elongation, with E0 being the least elongated and E7 being the most elongated. An E2 galaxy has a relatively low ellipticity, meaning it appears slightly elongated but still mostly circular. Its major axis is only slightly longer than its minor axis, giving it an oval-like shape. These galaxies are characterized by a smooth distribution of stars and lack any prominent spiral arms or a central bar structure.

On the other hand, an E6 galaxy exhibits a higher degree of ellipticity compared to E2 galaxies. Its shape is more elongated, with the major axis being significantly longer than the minor axis. However, similar to E2 galaxies, E6 galaxies also have a smooth distribution of stars without any noticeable spiral arms or a central bar. In summary, the primary difference between an E6 and an E2 galaxy is their shapes, with E6 galaxies being more elongated than E2 galaxies. Both types, however, share the common characteristic of having a smooth distribution of stars without any distinctive spiral or bar structures.

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Answer:

2991.47 [cm^2]

Explanation:

To solve this problem we must perform a dimensional analysis and use the corresponding conversion values:

\(3.22[ft^{2}]*\frac{12^{2}in^{2} }{1^{2}ft^{2}} *\frac{2.54^{2}cm^{2} }{1^{2}in^{2} } \\2991.47[cm^{2}]\)

Answer:

carbon dioxide

Explanation:

its common sense

The speed of the cannonball just before it strikes the ground is approximately 26.16 m/s.

First, we need to know that when an object is dropped, it accelerates towards the ground due to the force of gravity. This acceleration is constant and is equal to 9.8 m/s^2. Second, we need to know that the speed of an object is equal to its acceleration multiplied by the time it has been accelerating. Finally, we need to know that the distance an object falls is equal to 1/2 times the acceleration multiplied by the time squared.

Using these concepts, we can solve for the speed of the cannonball just before it strikes the ground. Since we know the height from which it was dropped (34.9 m), we can use the equation for distance to find the time it takes for the cannonball to fall.

1/2(9.8 m/s^2) t^2 = 34.9 m

Solving for t, we get:

t = sqrt(2 x 34.9 m / 9.8 m/s^2)

t = 3.26 seconds (rounded to two decimal places)

Now that we know the time it takes for the cannonball to fall, we can use the equation for speed to find its velocity just before it strikes the ground.

v = at

v = 9.8 m/s^2 x 3.26 s

v = 32 m/s (rounded to two decimal places)

So, the speed of the cannonball just before it strikes the ground is 32 m/s.

To find the speed of the cannonball just before it strikes the ground, we can use the following equation from classical mechanics:

v² = u² + 2as

where:
- v is the final velocity (speed) of the cannonball
- u is the initial velocity (speed), which is 0 m/s since it is dropped from rest
- a is the acceleration due to gravity, approximately 9.81 m/s²
- s is the height from which the cannonball is dropped, 34.9 m

Plugging the values into the equation:

v² = 0² + 2(9.81)(34.9)

v² = 684.258

Now, we take the square root of both sides to find the speed (v):

v ≈ 26.16 m/s

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Wrong answers:

A and B both state that solids are fluid while gases are not, while in reality, it is the opposite. Gases are fluid while solids are not.

C states the inverse of D, so C is incorrect.

Correct answer:

D. Solids have low energy levels and gases have high energy levels

This is because matter is in gas form when the temperature is higher and when the matter has absorbed more heat. More heat means more energy, so gases contain more energy than solids.

Matter, or "stuff", can be in multiple states, such as solid and gas.

The state of matter depends on how much energy the matter has absorbed.

Matter becomes a gas as more energy is added, and becomes a solid as more energy is removed.

This makes sense, because the individual molecules in a solid don't move as much, while the molecules in a gas move around quite a lot.

This makes gases easier to move around and change shape than solids.

Generally, as matter absorbs more heat and turns from solid to liquid to gas, the matter expands, and takes up more space.

This is because the more energy matter has, the more the molecules move and vibrate around, meaning they need more space to do so, so they expand.

Answer:

You will have to do the last PE - the initial PE

Explanation:

No option , The curler apply to the stone to bring it up to speed is  42.85 N.

F = 20*3/1.4 = 42.85 N

3 *3 = 2*u*9.8*40

u = 0.0114

Despite their similarities, distance and displacement have very different meanings, as do speed and velocity. Speed, a scalar quantity, describes "how quickly an object is travelling." You can think of speed as the rate at which an object travels a distance. An object moving quickly has a high speed and travels a fair distance in a brief period of time. In contrast, a slow-moving object travels a comparatively short distance in the same amount of time because of its low speed. Zero speed refers to an object that is completely stationary.

[Speed = Distance Time] is the general formula for calculating an object's speed. The SI speed unit is m/s.

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To turn ice at zero degrees Celsius to water at the same temperature, we must add energy in the form of heat. This additional energy disrupts the intermolecular forces within the ice, allowing the water molecules to move more freely and transition from a solid to a liquid phase.

To turn ice at zero degrees Celsius to water at zero degrees Celsius, the correct answer is B. energy. The phase transition from a solid to a liquid requires the addition of energy, specifically in the form of heat. This additional energy helps break the intermolecular forces that hold the water molecules together in a solid structure, allowing them to move more freely and transform into a liquid state.

At zero degrees Celsius, ice and water can coexist in equilibrium. However, the ice remains in a solid state because the energy present in the system is not sufficient to overcome the intermolecular forces that keep the water molecules arranged in a rigid lattice structure. By adding energy to the system, we increase the average kinetic energy of the water molecules, which leads to the disruption of these intermolecular forces.

The energy required to break these forces and convert ice to water is known as the heat of fusion. In this case, it refers to the amount of energy needed to convert one gram of ice at zero degrees Celsius to one gram of water at zero degrees Celsius. This energy is used to overcome the forces holding the water molecules in place, allowing them to move freely and adopt the more fluid characteristics of the liquid phase.

It is important to note that the addition of energy does not necessarily mean an increase in temperature. When the ice absorbs heat energy, its temperature remains at zero degrees Celsius until the phase transition is complete. Only after all the ice has been converted to water will further energy input cause a rise in temperature.

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Answer:

Zero

Explanation:

The net force acting on an object moving with uniform velocity is zero. This is an accordance with the Newton's first law of motion.

Newton's first law of motion states that a body will continue in its state of rest or uniform motion unless it is acted upon by an external force.

Since this body is moving with uniform motion, it is not accelerating. When a body is acceleration, the net force on it is not zero.

But this one is moving with uniform motion. The net force on the body is balanced and zero.

Answer:

30 cm to 1 mm

Explanation:

30 cm to 1 mm

Answer:

9 lần

Explanation:

Answer:

Kinetic energy (k.e) varies directly as v² from the formula

K.E=(mv²/2)

if v=3 then K.e =v²=(3)²=9

Answer:

Big Q represents the source charge which creates the electric field. Little q represents the test charge which is used to measure the strength of the electric field at a given location surrounding the source charge.

The source charge, or Big Q, is what generates the electric field. Little q stands for the test charge, that is used to gauge the intensity of the electromagnetic field around the source charge at a certain position.

Charged material experiences a force when it is exposed to an electromagnetic field because of the physical characteristic of electric charge.

You can have a positive or negative electric charge. Unlike charges attract one another, while like charges repel one another. Neutral refers to an object that carries no net charge.

Classical electrodynamics, the name given to early understanding of how charged particles interact, is still accurate for issues that do not call for taking into account quantum phenomena.

Electric current is a conserved attribute, meaning that the net charge—that is, the sum of the positive and negative charges in an isolated system—cannot change.

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When wind energy is transferred to the water, waves form and particles of water move in a nearly circular orbit.

Wind energy is converted into water energy by the wind, which can cause waves to form on the surface of the ocean. As wind energy is transferred to water, particles of water move in a nearly circular orbit.

A wave is a form of water movement that occurs in the ocean. A wave is produced when energy is transferred from the wind to the water. As a result, a wave is a form of energy that travels through the water. The particles of water transfer energy, not the water itself.

Water waves can be grouped into two categories: deep-water waves and shallow-water waves. Deep-water waves are waves that travel through deep water. They are distinguished by the fact that the water is deep enough that the entire wave is affected by the water's depth.

Shallow-water waves are waves that travel in shallow water. They are distinguishable because the wave's depth is less than one-half of the wavelength. Water waves are very important to surfers and others who enjoy water sports, and understanding the science behind them can help us appreciate them even more.

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