Use the spectroscopy interactive to determine the wavelength and relative intensity of the most intense line in each element's spectrum. Helium wavelength: nm relative intensity: Hydrogen wavelength: nm relative intensity: Sodium Sodium וח wavelength: relative intensity:

Answer:

maximum extent of a vibration or oscillation measured from the position of equilibrium.

Answer:

the maximum displacement or distance moved by a point on a vibratng body or wave measured from its equilibrium position. it is equal to one-half lenght of the vibration path.

Explanation:

hope it helps

Answer:

Explanation:

one and three seem right soo  answer C  

Answer:

231 C final temperature, 211 C change in temperature

Explanation:

To solve this problem you you use the q=MCΔT equation, where q is heat, m is mass, c is specific heat, and ΔT is change in temperature. Since we're given heat and solving for temperature we rearrange the equation to q/(M*C)=ΔT. At this point we simply plug in the given values to get a ΔT of 211, but this is simply the change in temperature so you add the initial to this to get the final temp.

Since the mass is attached to an ideal spring, the system will undergo simple harmonic motion. The maximum distance the mass will fall is equal to the amplitude of the oscillation.

The period of oscillation can be calculated as:

T = 2π√(m/k)

where m is the mass and k is the spring constant.

Substituting the given values, we get:

T = 2π√(0.7 kg / 86 N/m) ≈ 0.887 s

The maximum distance the mass will fall is equal to half the amplitude of the oscillation, which can be calculated using the equation:

x = A cos(2πt/T)

where x is the displacement of the mass from its equilibrium position at time t, and A is the amplitude of oscillation.

At the maximum displacement, cos(2πt/T) will be equal to -1. Therefore,

A = -x

The velocity of the mass at the maximum displacement will be zero. Therefore, the total energy of the system will be equal to the potential energy at the maximum displacement:

1/2 k A^2 = m g A

where g is the acceleration due to gravity.

Solving for A, we get:

A = (m g / k) = (0.7 kg x 9.81 m/s^2) / 86 N/m ≈ 0.0807 m

Therefore, the maximum distance the mass will fall is approximately 0.0807 m.

The nodes and antinodes of a standing wave always remain in a fixed position.

In a standing wave, the nodes and anti-nodes are present at fixed points.

The pattern of a standing wave shows that nodes result from destructive interference and anti-node result form constructive interference.

From a rest position, if we observe nodes and anti-node positions then we can see that nodes have zero displacement while anti-nodes are points that exhibit maximum displacement between two waves.

To put it simply, in Physics, the nodes and anti-nodes are two integral phases of a standing wave.

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Answer:

18 000 m/ s

Explanation:

speed = wavelength * frequency

speed =  1.2  * 15 000 = 18 000 m/s

The estimated azimuth and altitude of Venus is 270 degrees and 16 degrees, respectively. These values will change after an hour.

Azimuth is the angle in the horizontal plane between a celestial body and the north (or south) point of the horizon. The altitude is the angle between the celestial body and the horizon.Using a star chart, one can determine that Venus is located in the constellation Pisces, and its right ascension is approximately 0 hours, which corresponds to the vernal equinox.

Since Venus is due west, its azimuth is 270 degrees. Also, since it is a third of the way up from the horizon, its altitude can be estimated to be approximately 16 degrees.After an hour, the values of azimuth and altitude will change. Venus will have moved due to the Earth's rotation. The new azimuth and altitude can be calculated by using the formulas:azimuth_new = azimuth_old + (15 x t)altitude_new = altitude_oldwhere t is the time elapsed in hours. Since an hour has passed, t = 1. Thus,azimuth_new = 270 + (15 x 1) = 285 degreesaltitude_new = 16 degreesTherefore, the azimuth and altitude of Venus will change after an hour.

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Answer:

Orbits are the result of a perfect balance between the forward motion of a body in space, such as a planet or moon, and the pull of gravity on it from another body in space, such as a large planet or star

To calculate the additional distance the buoy will sink when a man stands on top, we need to consider the change in buoyancy force and the additional weight added to the system.

The buoyancy force is equal to the weight of the fluid displaced by the buoy. In this case, since the buoy is floating vertically, the buoyancy force is equal to the weight of the buoy itself.

Buoyancy force = Weight of the buoy = Mass of the buoy * Gravitational acceleration

Buoyancy force = 1200 kg * 9.8 m/s^2 = 11,760 N

When the man stands on top of the buoy, his weight is added to the system. The additional weight is:

Additional weight = Mass of the man * Gravitational acceleration

Additional weight = 80 kg * 9.8 m/s^2 = 784 N

The additional weight will increase the total weight of the system, and consequently, the buoyancy force will also increase.

The additional distance the buoy will sink can be calculated using Archimedes' principle, which states that the buoyant force is equal to the weight of the fluid displaced by the object.

Additional distance = Additional weight / (Cross-sectional area * Fluid density)

The cross-sectional area of the buoy can be calculated using the diameter:

Cross-sectional area = π * (Diameter/2)^2 = π * (0.9 m / 2)^2

Assuming the fluid density of saltwater is 1025 kg/m^3, we can substitute the values into the equation:

Additional distance = 784 N / (π * (0.9 m / 2)^2 * 1025 kg/m^3)

Calculating the additional distance will provide the specific value based on the given dimensions and assumptions.

In summary, to find the additional distance the buoy will sink when a man stands on top, we consider the change in buoyancy force due to the added weight. By using Archimedes' principle, the additional distance can be calculated by dividing the additional weight by the cross-sectional area of the buoy multiplied by the fluid density.

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Answer:

76

Explanation:

The speed is 76 miles per hour your welcome!!

Answer:

Cloth:

It is an insulator since it can't let electricity pass through

Dry Wood:

It is an insulator and can't conduct electricity.

Tap Water:

It is a good conductor as it contains dissolved salts.

Glass:

It is an insulator since it can't let electricity pass through.

Answer:

1 decomposition 2 oxygen

Explanation:

The burning of magnesium gives us magnesium oxide.

The chemical symbol of magnesium is Mg.

The chemical symbol of magnesium oxide is MgO.

So, the balanced chemical equation is

2Mg + O2 – 2 MgO.

We see that the element added is O Oxygen. So, the reaction is oxidation which is a decomposition reaction.

In oxidation always, oxygen is the common element involved in all chemical reactions of this kind.

Formula for momentum:

\(p=mv\)

momentum(measured in kg*m/s) = mass(measured in kg) * velocity(measured in m/s)

__________________________________________________________

Given:

\(m=3kg\)

\(v=3m/s\)

\(p=?\)

__________________________________________________________

Finding momentum:

\(p=mv\)

\(p=3\times3\)

__________________________________________________________

Answer:

\(\fbox{p = 9 kg*m/s}\)

considering one particular telescope, if we want to see a bigger piece of the sky, Employ a longer focal-length eyepiece.

A telescope is a tool used to view distant objects through the electromagnetic radiation that they emit, absorb, or reflect. A bigger telescope will gather more light, just as a bigger bucket will hold more rainfall. The size of a telescope, or the diameter of its primary mirror or lens, is its most crucial characteristic. More light is collected by larger telescopes, allowing you to see more distant things. With a telescope only 4 to 6 inches in diameter, you can see a lot. Use a telescope with an aperture of at least 8 inches. Although Bede's Galaxy (M81) is visible with binoculars, the bigger the telescope you can point at it, the better.

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Put your finger over P to compute power; this leaves I and V; hence, P = I x V.

The quantity of current multiplied by the resistance equals the potential difference, which is the same as voltage. One Coulomb of charge uses one Joule of energy to move between two locations in a circuit, which is equal to a potential difference of one Volt.

Difference that might exist at all between the two points The amount of work required to move a unit positive charge along any path through one point to another without accelerating is referred to as the electric field.

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Answer:

2.3 kg m/s

Explanation:

Answer:

resistance- decreases current-increases

Answer:

43.58kg

Explanation:

The equation F=ma will help here.

F=ma

523N=m(12m/s^2)

43.58kg=m

Answer:

240km/h

Explanation:

speed=distance/time

speed=600/2.5

=240km/h

Answer:

you know the answer

Explanation:

In order to start the lawn mower engine, a constant tension of 80 N is applied to a cord wrapped around a hub with a radius of 7.0 cm. The hub makes three revolutions before the motor starts. The work done in starting the engine is determined.

Work is defined as the product of force and displacement in the direction of the force. In this case, the force applied is the constant tension of 80 N in the cord, and the displacement is the distance traveled by the cord as the hub makes three revolutions.

To calculate the work done, we need to find the distance traveled by the cord. Each revolution of the hub corresponds to the circumference of a circle with a radius of 7.0 cm. Therefore, the distance traveled in one revolution is 2π(7.0 cm) = 44.0 cm.

Since the hub makes three revolutions, the total distance traveled by the cord is 3 × 44.0 cm = 132.0 cm.

To convert the distance to meters, we divide by 100: 132.0 cm ÷ 100 = 1.32 m.

Now we can calculate the work done: work = force × distance = 80 N × 1.32 m = 105.6 J.

Therefore, the work done in starting the lawn mower engine is 105.6 Joules.

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Answer:

static electricity

Explanation:

Answer:

2970dB

Explanation:

30 x99=2970

A magnet that is positively charged on one end and negatively charged on the other end is an example of D. polarity.

In the field of science, polarity can be described as a phenomenon in which the same substance has different charges in it. The electrical charges are separated inside the same substance or molecule as a result of polarity.

One part of a substance will be negative charges whereas the other will be positively charged as a result of polarity.

A magnet is an example of a substance that can easily gain or lose polarity. When the charges inside a molecule are separate at both ends, we will say that the magnet has gained polarity.

Although a part of your question is missing, you might be referring to this question:

A magnet that is positively charged on one end and negatively charged on the other end is an example of

A cohesion.

B adhesion.

C gravity.

D polarity.

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Answer: constructive interference

Explanation: plz mark Brainly

Answer:

constructive interference

Explanation:

a p e x :))

The material which are neither good conductors nor insulators of electricity are called semiconductors.

Semiconductors are materials that have an electrical conductivity that falls between that of conductors and insulators. They are neither good conductors nor insulators of electricity, but their conductivity can be controlled by adding impurities to the material. This process is called doping, and it can increase or decrease the conductivity of the semiconductor.

In their purest form, semiconductors are poor conductors of electricity because they have few free electrons available for conduction. However, when impurities are added, the semiconductor can become an n-type or p-type material, which have an excess of electrons or holes, respectively. These excess electrons or holes are then able to move through the material and conduct electricity.

Semiconductors are used in a wide range of electronic devices, including transistors, diodes, solar cells, and microchips. They are essential components in modern electronics, and their unique electrical properties make them incredibly useful for controlling and manipulating electrical signals.

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Newton's laws apply to the following things in your list: galaxies, planets, rocks on Earth, trucks, satellites in space, rocks on Mars, and airplanes.

This is because Newton's laws are universal, governing the motion of objects and the forces that act upon them, regardless of their location or scale.

According to "Newton's first law of motion", if a body is in rest, it will stay in rest until or unless an external or an unbalanced force is applied on the body to make it move. A satellite has a forward thrust, which is offset by the gravity of the earth and keeps the satellite orbiting around its orbit not falling it into the earth. The momentum that the satellite gained from its launch combines with the gravity of the earth cause the satellite go into the orbit above earth.

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Answer:

True

Explanation:

Velocity is a vector quantity, which means that it carries both magnitude and direction. Hence when direction of a particle changes, although magnitude (speed) may remain same, it's velocity changes due to direction change. For ex. A particle is m... A particle is moving along x axis with speed 1m/s, it's velocity will be represented as 1i (i represents unit vector along x)

But if it now starts moving along y axis, it's velocity is 1j (j represents unit vector along y axis). Hence velocity changes with direction.

brainllest pls .

Answer:

The force of gravitational attraction is 8.454 x 10⁻⁸ N.

Explanation:

Given;

mass of the boy, m₁ = 78 kg

mass of the girl, m₂ = 65 kg

distance between the boy and the girl, r = 2 meters

The force of gravitational attraction is given as;

\(F = \frac{Gm_1m_2}{r^2}\)

where;

G is gravitational constant = 6.67 x 10⁻¹¹ Nm²/kg²

r is the distance between two masses, m₁ and m₂

\(F = \frac{Gm_1m_2}{r^2} \\\\F = \frac{(6.67 \times 10^{-11})(78 \times 65)}{2^2}\\\\F = 8.454 \times 10^{-8} \ N\)

Therefore, the force of gravitational attraction is 8.454 x 10⁻⁸ N.