which component of a galaxy has other objects that revolve around it?

Answer:

5.88 m/s

Explanation:

The following data were obtained from the question:

Initial velocity (u) = 7 m/s

Acceleration (a) = –0.6 m/s²

Distance (s) = 12 m

Final velocity (v) =.?

We, can determine how fast the sprinter is running when he crosses the goal line as follow:

v² = u² + 2as

v² = 7² + (2 × –0.6 × 12)

v² = 49 + (–14.4)

v² = 49 – 14.4

v² = 34.6

Take the square root of both side

v = √34.6

v = 5.88 m/s

Therefore, the sprinter is running at a speed of 5.88 m/s when he crosses the goal line.

If a ball is given a push so that it has an initial velocity of 2 m/s down a certain inclined plane, then the distance it has rolled after t seconds is s = 2t + t². Then it takes 11 seconds for the velocity to reach 24 m/s. The correct option is D.

To find the time it takes for the velocity of the ball to reach 24 m/s, we need to solve for the time when the velocity function equals 24 m/s.

The velocity function is the derivative of the distance function, so we'll first find the derivative of the distance function s = 2t + t² with respect to time t:

ds/dt = d/dt(2t + t²)

ds/dt = 2 + 2t

Now we can set the velocity function equal to 24 m/s and solve for t:

2 + 2t = 24

Subtracting 2 from both sides:

2t = 22

Dividing both sides by 2:

t = 11

Therefore, it takes 11 seconds for the velocity to reach 24 m/s.

The correct answer is (d) 11 seconds.

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To determine the speed of the ice at the bottom of the ramp when opposed by a constant friction force, we can use the principles of mechanical energy conservation.

The mechanical energy of an object consists of its kinetic energy (KE) and potential energy (PE). In this case, as the ice slides down the ramp, it loses potential energy but gains an equivalent amount of kinetic energy.

Considering a friction force opposing the motion, the work done by friction (W_friction) will convert some of the potential energy into thermal energy (heat) and reduce the kinetic energy.

v^2 = 2gh - (Force_friction * distance) / m

v = sqrt(2gh - (Force_friction * distance) / m)

Please provide the values of the height (h), distance traveled, mass (m), and gravitational acceleration (g) so that we can calculate the speed at the bottom.

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The acceleration of the bike is given as 1.67 m/s^2.

We know that the acceleration has to do with the rate of the change of the velocity of the object with time and we can be able to obtain the acceleration by the use of the Newton second law and that would now be able to give;

F = ma

F = force on bike

m = mass of the bike

a = acceleration

Then we can be able to substitute the values and obtain.

a = F/m

a = 150 N/90 Kg

a = 1.67 m/s^2

Thus is it going to have an acceleration of 1.67 m/s^2.

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Answer:

With regards to NASA's ambition to send humans to Mars, is an encouraging idea.  Also, the aim of sending food supply by unmanned spacecraft before the 2030 project though noble is filled with constraints and design problems.

For the constraints,

1. The spacecraft could be lost on the space before it reaches its destination being Mars. This is because, lack of communication between the control unit on earth and the spacecraft signify it being lost forever.

2. The food supply is bound to spoil on Mars since it would be stored unrefrigerated. This is as a result of the actions of the micro organisms acting on them.

For the criteria for the engineering design problem:

1. The distance between earth and Mars is very far

2. Not factoring in the preservation method into the unmanned aircraft.

Explanation:

Answer:35 Celsius

Explanation:in this situation the difference in temperature is larger resulting in faster rate of transfer

Other person is incorrect, I did the test on edg.

Answer:  

A. by providing water for irrigation and restoring trees to areas where forests once existed

The construction of dams positively affect natural resources by providing water for irrigation.

Natural resources serves as materials thst is found in nature which are used by humans. These natural substances are soil, water.

Therefore, building of dams can help irrigation by using water which is a natural resources.

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The uncertainty in the position of the electron is estimated to be within a range determined by the uncertainty in its speed.

According to the Heisenberg uncertainty principle, there is a fundamental limit to the precision with which we can simultaneously measure certain pairs of physical properties, such as position and momentum. In this case, the uncertainty in the speed of the electron leads to an uncertainty in its position.

To estimate the uncertainty in the electron's position, we can use the principle that , where Δx represents the uncertainty in position, Δp represents the uncertainty in momentum, and ħ is the reduced Planck's constant. Since momentum is defined as the product of mass and velocity (p = mv), we can express the uncertainty in momentum as Δp = mΔv, where m is the mass of the electron and Δv is the uncertainty in its speed.

Given the range of speeds for the electron (between \(6.0×10^6 m/s\) and \(6.6×10^6 m/s)\), we can calculate the difference in momentum (Δp) by subtracting the lower speed from the upper speed. Then, using the uncertainty principle, we can solve for the uncertainty in position (Δx).

By applying the uncertainty principle and considering the range of speeds for the electron, we can estimate the uncertainty in its position. The calculation involves determining the difference in momentum resulting from the range of speeds and using this value to find the uncertainty in position. The exact numerical value of the uncertainty will depend on the specific mass of the electron and the given range of speeds.

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The answer is t=1.29 seconds.

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Heat always flows through from a higher thermodynamic potential to lower thermodynamic potential.

It can be defined as the branch of science that deals with the interactions of thermal energy across different system and their surroundings.Thermodynamics does not deal with the rate of energy interaction.The movement of the thermal energy depends on the thermodynamic potential of the respective objects or bodies in which the flow of the thermal energy is involved.

The thermodynamics potential is analogous to the electrical potential what is used to flow the current in the electrical circuit in the similar fashion the temperature gradient is the driving force that is used for the transfer of heat energy from a higher temperature potential to the lower to a temperature potential.
This natural flow of heat is valid only when any external work is not done on the thermodynamic system where transfer of heat taking place .

This principle of heat transfer is not applicable in the case of refrigerator and air-conditioner because in that case some external work is done on the system and is the natural driving force of heat transfer.

Hence,we can say that heat always flows through from a higher thermodynamic potential to lower thermodynamic potential unless until some external prime mover is provided for example in case of air conditioner.

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There is a net force on the truck" is true about the forces acting on the truck.

The runner's center of mass will be  0.40 meter raised during the jump.

Speed is distance travelled by the object per unit time. Due to having no direction and only having magnitude, speed is a scalar quantity With SI unit meter/second.

Initial vertical speed of the Olympic  runner = 2.8 m/s

Acceleration due to gravity = 9.8 m/s²

Mass of the Olympic  runner = 65 kg

Hence, the runner's center of mass will be raised during the jump

=  (Initial vertical speed )² ÷ (2 ×  Acceleration due to gravity)

= 2.8²/(2 ×9.8) meter

= 0.40 meter.

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No, the sun cannot explain global warming. Global warming is a phenomenon in which the temperature of the Earth's surface and atmosphere is rising continuously due to human activities such as deforestation, burning of fossil fuels, and industrialization.

This increase in temperature cannot be explained only by an increase in solar radiation.There are several factors which contribute to global warming, including greenhouse gases such as carbon dioxide, methane, and water vapor. These gases trap heat in the Earth's atmosphere, which causes the planet's temperature to rise. The sun's radiation does contribute to global warming, but it is not the main cause.

i) To calculate the increase in solar radiation that would cause the Earth to warm up by 1 K, we can use the following formula:ΔS = ΔT / αWhere ΔS is the increase in solar constant, ΔT is the increase in temperature, and α is the Earth's albedo (reflectivity).α = 0.30 is the standard value used for the Earth's albedo.ΔS = ΔT / αΔS = 1 K / 0.30ΔS = 3.33 W/m2So, to explain the increase in temperature of 1 K over the last hundred years, the solar constant would need to increase by 3.33 W/m2.

ii) The observed fluctuation of the solar constant over the past 400 years has been around 0.1% to 0.2%. This is much smaller than the 3.33 W/m2 required to explain the increase in temperature of 1 K over the last hundred years. Therefore, it is unlikely that the sun is the main cause of global warming.

The sun cannot explain global warming. While the sun's radiation does contribute to global warming, it is not the main cause. The main cause of global warming is human activities, particularly the burning of fossil fuels, which release large amounts of greenhouse gases into the atmosphere.

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Answer:

Ummmm Human's I don't understand your answer

Explanation:

Have a Nice Day

All components of the velocity vector are zero for t = 0, the particle is at rest for t = 0.

For what values of t is the particle at rest?

The position of a particle moving in the xy-plane is given by the parametric equations r = (3t) and v = (2t, 3t², 12t). To find for what values of t the particle is at rest, we need to find when the velocity vector (v) is equal to zero.

The velocity vector v is given by (2t, 3t², 12t). For the particle to be at rest, all components of the velocity vector must be equal to zero.

1. For the x-component (2t) to be zero: 2t = 0. Solving for t, we get t = 0.

2. For the y-component (3t²) to be zero: 3t² = 0. Solving for t, we get t = 0.

3. For the z-component (12t) to be zero: 12t = 0. Solving for t, we get t = 0.

Since all components of the velocity vector are zero for t = 0, the particle is at rest for t = 0.

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13.The color with the longest wavelength is option A. Red.

14.The sky appears blue due to option D. Scattering of light.

Red light has a longer wavelength compared to yellow and blue light.The color that has the longest wavelength is red. The color of the sky appears blue due to scattering of light. The distance between one peak and the next in a series of waves, particularly electromagnetic waves traveling through space or along a wire is referred to as wavelength.

The wavelength of light, for example, determines its color. Red light has the longest wavelength, followed by orange, yellow, green, blue, and purple, with violet light having the shortest wavelength. When light is reflected off a surface or passes through a medium, it can be deflected in various directions, a phenomenon known as scattering of light.

The Earth's atmosphere scatters sunlight in all directions, but the shorter blue wavelengths are scattered more than the longer wavelengths. As a result, we perceive the sky as blue during the day.  The light becomes scattered when it interacts with particles in the atmosphere, causing the sky to appear blue during the day and red during sunset or sunrise. The scattering of light is the process that causes the sky to appear blue.

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The benefits of semiconductor lasers range from their low cost to their energy efficiency.

Small volume, light weight, high reliability, long service life, and low power consumption are all benefits of semiconductor lasers. The semiconductor laser also used a low voltage constant current power source, which resulted in a low rate of powder failure, safe operation, and minimal maintenance costs.

Solid-state lasers are distinct from semiconductor lasers. Whereas electrical energy is employed as the pump source in semiconductor lasers, light energy is used as the pump source in solid-state lasers.

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Answer:

B

Explanation:

Gravity, the attractive force between all masses, is what keeps the planets in orbit. Newton’s universal law of gravitation relates the gravitational force to mass and distance

The force of gravity is what gives us our sense of weight. Unlike mass, which is constant, weight can vary depending on the force of gravity (or acceleration) you feel. When Kepler’s laws are reexamined in the light of Newton’s gravitational law, it becomes clear that the masses of both objects are important for the third law, which becomes a3 = (M1+ M2) × P2. Mutual gravitational effects permit us to calculate the masses of astronomical objects, from comets to galaxies.

The turning point's y-value is indeed the largest. As a consequence, we must discover the greatest quadratic function indicating that perhaps the ball would achieve a height limit of 72.5 feet. Which indicates:

\(x = 110.90\) or \(x = -0.90\)

Given that we're working with time,

\(x = 110.90\)

We have 110.9 feet to the nearest decimal place.

Why is it referred to as a quadratic function?

A quadratic issue is a type of challenge in mathematics that deals with something like a variable multiplication by itself, which is defined as squaring. This language stems from the fact that the area of a square is equal to its line segment multiplied by itself. The term "quadratic" is derived from quadratum, which is the Latin word meaning square.

Describe the three different kinds of quadratic functions?

Quadratics are typically utilized in three ways:

1)Standard Form: y = an x 2 + b x + c y=ax2+bx+c y=ax2+bx+c y=ax2+bx+c.

2)Factored Form: y = a (x r 1) (x r 2) y=a(x-r 1)(x-r 2) y=a(xr1)(xr2) y=a(xr1)(xr2).

3)Vertex Form: y = a (x h) 2 + k y=a(x-h)2+k y=a(xh)2+k.

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Answer:

I think its -275

Explanation:

Part 1: The number of pathways in a circuit determines the possible routes for electric current to flow.

There are maximum of five pathways in this circuit, depending on its complexity and the arrangement of components.

Part 2: Determining whether the circuit is series or parallel requires more information.

In a series circuit, components are connected in a single path, and the current flows through each component sequentially.

If the circuit has only one pathway (zero or one pathway), it suggests a series circuit.

However, if the circuit has multiple pathways (two or more pathways), it indicates a parallel circuit.

To conclusively determine the circuit's nature, we need to analyze the circuit diagram or obtain additional details regarding the component connections and their interactions.

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Answer:

When the ball falls down.

Answer: RATE ME AND MAKE ME BRAININESS AND THANK ME

Explanation:Sound waves are pressure waves that travel through Earth's crust, water bodies, and atmosphere. Natural sound frequencies specify the frequency attributes of sound waves that will efficiently induce vibration in a body (e.g., the tympanic membrane of the ear) or that naturally result from the vibration of that body.

Sound waves can potentiate or cancel in accord with the principle of superposition and whether they are in phase or out of phase with each other. Waves of all forms can undergo constructive or destructive interference. Sound waves also exhibit Doppler shifts—an apparent change in frequency due to relative motion between the source of sound emission and the receiving point. When sound waves move toward an observer the Doppler effect shifts observed frequencies higher. When sound waves move away from an observer the Doppler effect shifted observed frequencies lower. The Doppler effect is commonly and easily observed in the passage of planes, trains, and automobiles.

The speed of propagation of a sound wave is dependent upon the density of the medium of transmission. Weather conditions (e.g., temperature , pressure, humidity , etc.) and certain geophysical and topographical features (e.g., mountains or hills) can obstruct sound transmission. The alteration of sound waves by commonly encountered meteorological conditions is generally negligible except when the sound waves propagate over long distances or emanate from a high frequency source. In the extreme cases, atmospheric conditions can bend or alter sound wave transmission.

The speed of sound in steel is about 17 times as fast as it's speed in air.

Naturally, when a sound starts out at one end of a pipe, it reaches the other end thru the steel before it reaches the other end thru the air in the pipe.

The longer the pipe is, the longer will be the delay between the arrival of the two sounds at the other end.

Engine size and mpg (miles per gallon) are the two attributes that are most weakly correlated

Engine size and mpg (miles per gallon) are the two attributes that are most weakly correlated. Engine size and mpg have a negative correlation, meaning as engine size increases, mpg decreases.

Acceleration and engine size have a positive correlation, meaning as engine size increases, acceleration also increases. This correlation is stronger than the correlation between engine size and mpg.

Acceleration and vehicle weight have a negative correlation, meaning as vehicle weight increases, acceleration decreases. This correlation is also stronger than the correlation between engine size and mpg.

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Answer:

A national park is one such protected area for the special species of flora and fauna of the region. In Nepal, there are numerous national parks to conserve and protect wildlife and their natural habitat.

The magnitude of the vector with components -14.0 units in the x-direction and 5 units in the y-direction can be calculated using the Pythagorean theorem.

The magnitude of a vector represents its length or size. In the xy plane, the magnitude of a vector with components in the x-direction (horizontal) and y-direction (vertical) can be found using the Pythagorean theorem. The theorem states that the square of the magnitude of a vector is equal to the sum of the squares of its components.

For the given vector with components -14.0 units in the x-direction and 5 units in the y-direction, we can calculate its magnitude as follows:

Magnitude = sqrt(\(14^{2} } +5^{2}\))

Magnitude = sqrt(196 + 25)

Magnitude = sqrt(221)

Magnitude ≈ 14.87 units

Therefore, the magnitude of the vector is approximately 14.87 units. This represents the length or size of the vector in the xy plane, taking into account its components in the x and y directions.

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Answer: 1 degree

Explanation:  I looked it up.

In order for a single magnifying glass to magnify an object, the lens must have a convex shape.

A convex lens curves outward and is thicker at the center than at the edges. When light passes through a convex lens, it refracts or bends inward, converging at a focal point. This allows the lens to create a magnified image of the object being viewed.

The distance between the object and the lens, as well as the distance between the lens and the viewer's eye, will also affect the magnification. Additionally, the lens must be positioned at the correct distance from the object to produce a clear, focused image.

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