An astronomer studies the spectrum of a quasar and measures its distance. Which property of the quasar's spectrum is critical in order to determine its distance? the difference between the observed and rest wavelengths of the quasar's spectral lines the broadness of the optical wavelength emission lines in the quasar's spectrum the average distance between the spectral lines in the quasar's spectrum the number of spectral lines present that are caused by the interstellar medium the peak wavelength of the emission of the quasar's continuum spectrum

196 children and 165 adults were admitted to the amusement park on that day.

Let's assume that the number of children who entered the park was "x" and the number of adults who entered was "y". According to the problem, we know that the admission fee for children is $1.5 and for adults is $4. Using this information, we can create two equations:

1.5x + 4y = 954  (total admission fees collected on that day)
x + y = 361  (total number of people who entered the park)

Now, we need to solve these equations simultaneously to find the values of x and y. One way to do this is to use substitution. We can rearrange the second equation as x = 361 - y and substitute this value of x in the first equation:

1.5(361-y) + 4y = 954

Expanding the brackets and simplifying, we get:

541.5 + 2.5y = 954
2.5y = 412.5
y = 165

Substituting this value of y in x + y = 361, we get:

x + 165 = 361
x = 196

Therefore, 196 children and 165 adults were admitted to the amusement park on that day.

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To find the average angular velocity during the dive, we need to first calculate the time it takes for the diver to reach the water from the 10-meter high platform. Assuming zero initial vertical velocity and using the free fall equation:

h = 1/2 * g * t^2

where h = 10 meters, g = 9.81 m/s^2 (acceleration due to gravity), and t is the time in seconds.

Rearranging the equation to find t:

t^2 = 2 * h / g
t^2 = 2 * 10 / 9.81
t^2 ≈ 2.04
t ≈ √2.04 ≈ 1.43 seconds

Now that we have the time, we can calculate the average angular velocity (ω) using the formula:

ω = θ / t

where θ is the total angle in radians the diver rotates during the dive, and t is the time in seconds. The diver makes 2.5 revolutions, which is equal to 2.5 * 2π radians:

θ = 2.5 * 2π ≈ 15.71 radians

Now, we can find the average angular velocity:

ω = 15.71 radians / 1.43 seconds ≈ 10.99 radians/second

So, the average angular velocity during the dive is approximately 10.99 radians/second.

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By multiplying the fluid velocity by the internal pipe diameter (to compute the fluid's inertia force) and then dividing the result by the kinematic viscosity, the Reynolds number (Re) of a moving fluid may be derived (viscous force per unit length).

The Reynolds number is used to get some insight into the link between inertial forces, or those that continue moving due to Newton's first rule that states that an item in motion doesn't stop, and viscous forces, or those that cause the fluid to cease flowing due to its viscosity.

Reynolds number is a dimensionless variable that makes it easier to anticipate the behaviour of flows. Laminar flow is indicated by a low Reynolds number, whereas turbulent flow is indicated by a high Reynolds number.

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Answer:

v = 51.60 m/s

Explanation:

To calculate the velocity of the Earth around the sun you use the following formula, which comes from the universal gravitational Law:

\(v=\sqrt{\frac{GM_E}{r}}\)

M_E: Earth's mass = 5.97*10^24 kg

r: distance between the Sun and the Earth = 149 600 000 km =m

G: Cavendish's constant = 6.674×10−11 m3⋅kg−1⋅s−2

You replace the values of G, M_E and r in the equation for v:

\(v=\sqrt{\frac{(6.674*10^{-11}m^3/kgs^2)(5.97*10^{24} kg)}{ 1.496*10^{11}m }}\\\\v=51.60\frac{m}{s}\)

hence, the velocity of traslation of the Earth is 51.60 m/s

We have that for the Question, it can be said that the maximum velocity is

From the question we are told

A 2.00kg block is attached to a horizontal ideal spring with a spring constant k=100Nm.

The block-spring system is set on a horizontal surface with negligible friction.

Generally the equation for the Potential energy  is mathematically given as

\(P.E=\frac{1}{2}Rx_m^2\\\\2=\frax{1}{2}*100x_m^2\\\\x_m^2 = 0.04m\\\\x_m = 0.2m\)

The PE is converted to KE, Therefore

\(KE = 2\\\\\frac{1}{2}MV_m^2 = 2\\\\V_m^2 = \frac{4}{M}\\\\V_m^2 = \frac{4}{2}\\\\V_m = \sqrt{2}\\\\V_m = 1.414m/s\)

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Complete Question

A 2.00 kg block is attached to a horizontal ideal spring with a spring constant k = 100 N The block-spring system is set on a horizontal surface with negligible friction. A graph of the potential energy U as a function of time t for this system is shown. The maximum displacement IMAX of the block from its equilibrium position and the maximum speed Umat of the block during the motion represented by the graph are most nearly A IMAX = 2.0 m and UMAX 1.4" B UMAX = 1.4 and UMAX=0.20" с MAX 0.20 m and UMAX = 1.4" D IMAX 0.40 m and UMAX 1.4 E IMAX 0.04 m and UMAX 2.0"

Answer:

When a branch of a tree is shaken, some of the fruits may fall down. Why? Solution : The fruits fall down due to inertia of rest.

Answer:

I HOPE IT WILL HELP YOU A LOT....

Answer:

Without food your not able to produce energy thats why you cannot work so long

The graph shown in the first option nicely plots the lion's and gazelle's velocities as a function of time, so option A is the correct answer.

Velocity is the rate of change of displacement over time.

As mentioned in the problem of running at a constant speed towards a gazelle with a standing lion as shown above.

So option A is correct.

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We can presume that an ambulance with its siren activated is rushing to get somewhere and, depending on the driving circumstances, is likely travelling between 30 and 150 km/h. The vehicle's speed can be determined using the Doppler effect equation. Let va represent the ambulance's maximum speed. The frequency, f'=(vvv a)f=560Hz, is audible as it gets closer.

Because the source is travelling in the direction of the observer, a negative sign appears. The ambulance is described as moving away by the opposite sign with source velocity magnitude. The Doppler shifted frequency as it recedes is f')=(vv+v0)f=480Hz.

The speed of the source can be calculated as va=v(f'f')f'+f'=(343ms)(560Hz480Hz)560Hz+480Hz=26.4ms by solving the second of these equations for f and substituting into the other.

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When two projectiles of equal mass are fired at the same speed but in opposite directions from two launch sites, several factors come into play.

Here are some key points to consider:

1. Conservation of momentum: According to Newton's third law of motion, for every action, there is an equal and opposite reaction. When the projectiles are fired in opposite directions, their momenta will be equal and opposite, ensuring the overall momentum of the system remains conserved.

2. Trajectories: The trajectories of the projectiles will depend on various factors, including the angle of launch and the presence of external forces such as air resistance. Assuming ideal conditions with no external forces, the projectiles will follow symmetrical paths, forming mirror images of each other.

3. Collision or interaction: Depending on the scenario, the projectiles may collide with each other during their flight or interact in some way. The nature of this interaction will depend on factors such as the relative positions, velocities, and masses of the projectiles.

4. Energy considerations: The kinetic energy of both projectiles will be the same, given that they are launched at the same speed. However, other forms of energy, such as potential energy or energy dissipated due to interactions, may vary depending on the specific circumstances.

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Answer:

I'm going to try to explain it to you easy as possible so basically when a motor is placed between two poles of another magnet a current from a voltage flow to the coil and a magnet field is produced around the electromagnetic and the poles of the magnet interact with the poles from the electricmatic causing the motor to turn in more coils growing stronger into the motor

Answer:

I think it would be the 3rd or 4th one.

Answer:

lift

weight

thrust

air resistance

Explanation:

plz mark me as brainliest

Answer: Upthrust, lift, air resistance,  and thrust

Explanation:

All of these 4 elements are taken into account during the design and creation of a plane.

Answer:

your getting in the water causes it to make a giant wave

Explanation:

The unit for momentum is equal to Kgm/s.

Given the following data:

To determine the unit for momentum:

In Science, momentum can be defined as a multiplication of the mass of an object and its velocity.

Mathematically, momentum is giving by this formula;

\(Momentum = mass \times velocity\)

Substituting the given parameters into the formula, we have;

\(Momentum = kg \times m/s\\\\\)

Momentum = Kgm/s.

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When you add air to a balloon, the pressure inside the balloon increases, causing it to expand.

This is because the air pressure outside the balloon is greater than the air pressure inside the balloon. On the other hand, when you add air to a steel tank, the pressure inside increases as well, but the steel tank is able to withstand much higher pressure than a balloon, so the pressure inside the steel tank will not increase as quickly.

When air is added to a balloon, the air pressure inside the balloon increases and causes the balloon to expand. This is because the air pressure outside the balloon is greater than the air pressure inside the balloon, so the pressure inside the balloon increases faster than the pressure inside the steel tank.

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2.20 m/s^2  is the acceleration of the elevator.

Option c is correct answered .

If you stand on a scale in an elevator accelerating upward, you feel heavier because the elevator's floor presses harder on your feet, and the scale will show a higher reading than when the elevator is at rest. On the other hand, when the elevator accelerates downward, you feel lighter.

support force F = mass x acceleration + weight

For a mass m= kg, the elevator must support its weight = mg = Newtons to hold it up at rest. If the acceleration is a= m/s² then a net force= Newtons is required to accelerate the mass.

Fnet = m a

Fn + (-Fg) = m a

a = 1020 - (85)(9.8) /85

a = 2.20  m/s^2

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Answer:4

Explanation:

Answer: 103 km/hr

Explanation:

Guessed on ck-12 and it ended up being right.

Answer:

50

Explanation:

He/she guessed...Ig its 50.

The point on the y-axis where the magnetic field is zero can be determined by applying Ampere's law, which states that the sum of the magnetic field contributions from currents passing through a closed loop is proportional to the total current passing through the loop.

In this case, we have two wires carrying currents in opposite directions. The magnetic field at a point on the y-axis due to each wire can be calculated using the formula:

B = (μ0 / 2π) * (I / r),

where B is the magnetic field, μ0 is the permeability of free space (4π × 10^(-7) T·m/A), I is the current, and r is the distance from the wire to the point of interest.

Let's consider a point on the y-axis at a distance y from the x-axis. The magnetic field contributions from the two wires can be calculated as follows:

B1 = (μ0 / 2π) * (i1 / r1) = (4π × 10^(-7) T·m/A / 2π) * (45 A / r1),

B2 = (μ0 / 2π) * (i2 / r2) = (4π × 10^(-7) T·m/A / 2π) * (35 A / r2),

where r1 is the distance between the first wire and the point on the y-axis, and r2 is the distance between the second wire and the same point on the y-axis.

To find the point on the y-axis where the magnetic field is zero, we set B1 + B2 = 0 and solve for y:

(4π × 10^(-7) T·m/A / 2π) * (45 A / r1) + (4π × 10^(-7) T·m/A / 2π) * (35 A / r2) = 0.

Simplifying the equation, we have:

(45 A / r1) + (35 A / r2) = 0.

From this equation, we can see that for the magnetic field to be zero, the sum of the magnetic field contributions from the two wires must cancel each other out. The specific value of y where this occurs depends on the values of r1 and r2, which are the distances from the wires to the point on the y-axis.

Given that y1 = 2 cm and y2 = 11 cm, we can calculate r1 and r2 as follows:

r1 = √((x^2 + y1^2)) = √((0^2 + 0.02^2)) ≈ 0.02 m,

r2 = √((x^2 + y2^2)) = √((0^2 + 0.11^2)) ≈ 0.11 m.

Now, substituting these values into the equation above, we have:

(45 A / 0.02 m) + (35 A / 0.11 m) = 0.

Simplifying further, we find:

2250 A/m + 318.18 A/m = 0,

2570.18 A/m = 0.

Since it is not possible for the sum of positive values to equal zero, there is no point on the y-axis where the magnetic field is exactly zero in this scenario.

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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.

Sitting by a fire is an example of thermal radiation because the fire emits heat in the form of electromagnetic waves that are absorbed by nearby objects.

What is thermal radiation?

Thermal radiation is the transfer of heat energy in the form of electromagnetic waves, without requiring a medium to travel through. It can be emitted by any object with a temperature above absolute zero and can be absorbed by other objects, causing them to heat up.

Sitting by a fire is an example of thermal radiation because the fire emits electromagnetic radiation in the form of heat. When the fire burns, it produces thermal energy, which causes the molecules in the fire to vibrate and emit electromagnetic waves that carry thermal energy. These waves can be absorbed by nearby objects, including people sitting around the fire, causing them to heat up.

The transfer of heat through thermal radiation does not require a medium to travel through, unlike conduction and convection. This means that the heat can be transferred through the vacuum of space, making thermal radiation an important means of heat transfer in the universe, particularly for objects that are too far apart to transfer heat by conduction or convection.

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To determine the magnitude of the acceleration of the motorcycle, we need to know the force of friction acting on the wheels. The force of friction is equal to the coefficient of friction multiplied by the normal force acting on the wheels, which is equal to the weight of the motorcycle and rider. The weight of the motorcycle and rider can be calculated by multiplying the mass by the acceleration due to gravity (9.8 m/s^2). So, the force of friction acting on the wheels of the motorcycle is equal to 0.88 * 196 kg * 9.8 m/s^2 = 1661.28 N.

The acceleration of the motorcycle is equal to the force of friction divided by the mass of the motorcycle and rider. So, the acceleration of the motorcycle is equal to 1661.28 N / 196 kg = 8.45 m/s^2.

Answer:  8.45 m/s^2

Answer:

It is cause by radiation that's the answer

Explanation: the heat project sun rays towards the popcorn which causes it to pop

In Rutherford's famous set of experiments, the fact that some alpha particles were deflected at large angles indicated that the atom contains a dense, positively charged nucleus.

Rutherford conducted experiments where he bombarded a thin gold foil with alpha particles. According to the prevailing model at the time, the Thomson model, it was believed that the positive charge in an atom was spread uniformly throughout the atom, much like plum pudding.

However, Rutherford's observations revealed that some alpha particles experienced significant deflections and even bounced back at large angles. This unexpected result could not be explained by the Thomson model.

Rutherford proposed a new atomic model known as the nuclear model, suggesting that the atom consists of a tiny, dense, positively charged nucleus at the center and the majority of the atom is empty space. This explained the deflection of alpha particles, as they were repelled or deflected by the positive charge concentrated in the nucleus.

The deflection of alpha particles at large angles indicated the presence of a compact and positively charged nucleus within the atom, leading to a fundamental revision of the understanding of atomic structure.

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Answer:

The cumulative distance that the bird travel is 13.33 Km

Explanation:

Given that,

Velocity of runner = 3.4 km/hr

Distance = 8 km

Velocity of bird = 17 km/hr

Let x is the distance from the origin where the runner run into the bird

We need to calculate the value of x

Using time of runner and bird

\(t_{r}=t_{b}\)

\(\dfrac{d_{r}}{v_{r}}=\dfrac{d_{b}}{v_{b}}\)

Put the value into the formula

\(\dfrac{x}{3.4}=\dfrac{8+(8-x)}{17}\)

\(17x=3.4\times8+3.4(8-x)\)

\(17x=27.2+27.2-3.4x\)

\(17x+3.4x=54.4\)

\(x=\dfrac{54.4}{20.4}\)

\(x=2.67\)

We need to calculate the cumulative distance that the bird travel

Using distance of bird

\(d_{b}=16-x\)

Put the value into the formula

\(d_{b}=16-2.67\)

\(d_{b}=13.33\ km\)

Hence, The cumulative distance that the bird travel is 13.33 Km

Adrian would have less potential energy at the top of the hill compared to Jessica because his zigzag path results in a smaller change in height, which is a determining factor for potential energy.

Adrian would have less potential energy at the top of the hill compared to Jessica. Potential energy is directly related to an object's mass, height, and gravitational acceleration. In this scenario, Adrian zigzags up the hill while Jessica goes in a straight line.

When Adrian zigzags up the hill, he covers a longer distance compared to Jessica who takes a straight path. This means that Adrian's vertical displacement, or the change in height, is smaller than Jessica's. Since potential energy is directly proportional to height, Adrian would have a lower vertical displacement and, therefore, less potential energy at the top of the hill.

Although Adrian's and Jessica's masses are equal, their potential energies at the top of the hill will differ because potential energy depends on the vertical displacement. Adrian's zigzagging path reduces the distance he covers vertically, resulting in a smaller change in height compared to Jessica's straight path.

It's important to note that the total work done by both Adrian and Jessica to reach the top of the hill would be the same since their masses are equal. The difference in potential energy is due to the difference in vertical displacement caused by their different paths.

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The systems that are most commonly described by schematics are electrical and mechanical systems. A schematic is a type of diagram that illustrates how a system works by showing the interconnections between components. It provides a visual representation of the system's architecture that is easy to read and interpret.

The schematic diagram displays the components of the system and their connections. Schematic diagrams can be used to explain complex systems in a simple way. They are particularly useful for illustrating how electrical and mechanical systems work.A mechanical schematic is a diagram that shows the mechanical components of a system, such as gears, belts, and pulleys. It provides a visual representation of how the system is designed to work, allowing engineers to identify potential problems and optimize the design. Electrical schematics, on the other hand, show the wiring and electronic components of a system. They provide a clear and concise representation of how electrical signals flow through the system, making it easy to identify potential problems and troubleshoot issues.

Schematic diagrams are used in a wide range of fields, from automotive and aerospace engineering to robotics and computer hardware design. They are an essential tool for engineers and designers who need to understand the inner workings of complex systems.

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If the rod can be safely handled with leather gloves when the surface reaches 365K, how long does it take to get to that point.

The time it takes for the rod's surface to reach 365K depends on several factors, such as the initial temperature of the rod, the material it is made of, and the rate at which it is heated. Without this information, it is difficult to provide an exact time frame.

However, I can provide a general explanation of the process. When the rod is heated, it absorbs thermal energy, which causes its temperature to increase. The rate of temperature increase depends on the power of the heating source and the thermal conductivity of the rod's material.
Time = (Final temperature - Initial temperature) / Heating rate
Please provide more specific details so that I can provide a more accurate estimation.

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