Psertica track detectors are ised to measure the speed of particles in the lifetime of the particie is known. Particie-X has a lifetime of 256.2. an experment inside the detector by a given reaction. The partides leave 10.6 cm long tracks on average before they decay into other particies not abservable by the detectori What is the aunage speed of the particles in terms of the speed of light? Tries 0/12

The spectrum observed from the Sun (or any star) would exhibit an absorption spectrum. This is because the outer gaseous atmosphere of the star absorbs specific wavelengths of light, resulting in dark absorption lines in the spectrum.

In the cooler, lower-density outer atmosphere, where white light from the star travels, some atoms or molecules in the atmosphere absorb photons with particular energy. In the spectrum, these absorptions show up as black lines at specific wavelengths. The specific set of absorption lines that each element or molecule generates results in a distinctive pattern that can be used to identify the elements that are present in the star's atmosphere.

The absorption spectrum offers insightful data on the chemical make-up and physical characteristics of the star. Astronomers can ascertain the elements present, their abundances, and other characteristics like the temperature, pressure, and velocity of the star's atmosphere by examining the absorption lines.

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Answer: 1350J

Explanation:

To solve this, we are going to use the formula for calculating potential difference which is:

Potential difference (V) = Work done (W) / Total charge (C)

Therefore,

9 volts = Work done / 150

Work done = 150 × 9 = 1350J

Answer:

2.74

Explanation:

Magnification = image distance/object distance

Mag = v/u

Given

v = 46cm

u = 16.8

Magnification = 46/16.8

Magnification = 2.74

Hence the magnification is 2.74

Answer:

Option C. vi = 0

Explanation:

An object held at a particular height above the ground is considered to be at rest. If the object is release from that height, the initial velocity (vi) is considered to be zero since the object is at rest or at a stand still position.

Thus,

Initial velocity (vi) = 0

The resultant of the two given vectors is 346.4 units.

The resultant of the three vectors is the sum of all the three vectors acting together. The resultant vector is the single vector that will represent all the three vectors in terms of magnitude and direction.

The sum of the vectors in x-direction;

Vx = V cosθ

where;

for 200 units, θ = 0⁰ (above the horizontal)

for 400 units, θ = 60⁰ (above the horizontal)

Vx = 200 cos(0) - 400 cos(60)

Vx = 0

The sum of the vectors in y-direction;

Vy = 200 sin(0) + 400 sin(60)

Vy = 346.4 units

The resultant vector is calculated as;

V = √(Vx² + Vy²)

V = √(0² + 346.4²)

V = 346.4 units

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Answer:

The accerlation is a derived from the other quantities like change in velocity/time take etc.

The factor by which the speed of a wave on the string change is halved (1/2).

The pull that is designated as tension is in that direction. As a result, the tension will point toward the string or rope and away from the mass. When a mass is hanging, the string pulls it upward, applying an upper force, which causes the tension to be on the upper side.

Tension= T' = 1/2T

Linear density = (m/L) final = 2 (m/L)

Speed of the wave = v => sqrt(T/(m/L)

                            => sqrt(T/2 x 2(m/L) )

                          V final = 1/2sqrt(T/(m/L)

                                => 1/2 times V

Mass per unit length of a strand or along the flow route of a stream of fibres is referred to as linear density.

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Answer:

The direction of friction force is toards north.

Explanation:

A tool box is at rest on the back of a track. The truck is accelerating towards north.

As the frame of reference is acceleratinf so it is a non inertial frame  of reference.

Thus, teh toolkit experineces a pseudo force towards the south direction.

According to the question, the toolbox is at rest so the fiction force is balances by teh psheudoforce, and thus teh friction force is acting toards north.

Answer:

Kirchhoff's current law (1st Law) states that the current flowing into a node (or a junction) must be equal to the current flowing out of it. This is a consequence of charge conservation.

Explanation:

Kirchhoff's law of current states that the total current entering a junction must be equal to the total current leaving the junction.

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Answer:

group

Explanation:

And vote me brainliest

Answer:

99 meters

Explanation:

Apply the distance formula:

\( \displaystyle{s = ut + \dfrac{1}{2} g{t}^{2} }\)

where u is initial velocity which is 0 m/s since there is no initial velocity by dropping an object.

t is time which we know is 4.5 seconds. Finally, g is a constant of acceleration due to gravity which on Earth equals to 9.8 m/s². Therefore:

\( \displaystyle{s = 0 \cdot 4.5 + \dfrac{1}{2}(9.8) {(4.5)}^{2} } \\ \\ \displaystyle{s = \dfrac{1}{2}(9.8) {(4.5)}^{2} } \\ \\ \displaystyle{s \approx 99 \: \text{m}}\)

Therefore, the bridge is around 99 meters height.

IR, visible, and ultraviolet radiation are all types of electromagnetic radiation, whereas nuclear radiation includes alpha and beta particles as well as gamma radiation. Electromagnetic radiation is energy that travels through space in the form of waves.

These waves have different wavelengths and frequencies that determine their properties.IR, visible, and ultraviolet radiation are all part of the electromagnetic spectrum, which includes all types of electromagnetic radiation. These types of radiation are characterized by their wavelengths and frequencies.

IR radiation has longer wavelengths and lower frequencies than visible radiation, while visible radiation has a range of wavelengths that correspond to different colors, and ultraviolet radiation has shorter wavelengths and higher frequencies than visible radiation.

Nuclear radiation, on the other hand, is the result of unstable atomic nuclei that emit particles or energy in order to become more stable. There are three types of nuclear radiation: alpha particles, beta particles, and gamma rays. Alpha particles are made up of two protons and two neutrons and are positively charged. They have a short range and can be stopped by a sheet of paper or the outer layers of skin.

Beta particles are high-energy electrons that can penetrate deeper into the body than alpha particles. They can be stopped by a sheet of aluminum or plastic. Gamma rays are high-energy electromagnetic radiation that can penetrate deep into the body and are difficult to shield against.

They can only be stopped by thick layers of concrete or lead.In conclusion, IR, visible, and ultraviolet radiation are all types of electromagnetic radiation, whereas nuclear radiation includes alpha and beta particles as well as gamma radiation.

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Answer:  NOx and VOC combine chemically with oxygen to form ozone

Explanation:

Answer:

c

Explanation:

what poping

Answer:

1.23 m/s^2

Explanation:

Acceleration is  Δv / Δt

  accel  =  (12.6-4) m/s  /  7 s =  1.23 m/s^2

Answer:

Explanation:

3.011 x 10^24 atoms

Answer:

jskskskssksksksskssksksksksks

Transient simulation is an analysis is where a parameter such as a voltage or current is plotted against time.

A time domain transient analysis is where a parameter such as a voltage or current is plotted against time. If you are looking at an output you can see the behavior over a specified length of time. For this example we are going simulate the output of a half-wave rectifier.

In a transient simulation, you're looking at how a circuit reacts to a change in its inputs, and how the output eventually transitions between two states. These transitions between output states are not instant, and many applications require a smooth transient response between two states.

Transient analysis allows you to extract the decay constant and the natural resonance frequency from a graph of current or voltage in the time domain. The same idea applies any linear time invariant circuit driven with an arbitrary waveform. These driving sources do not need to be periodic in time.

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Answer:

frictional force and applied force

Answer: Acceleration is 0.25m/s^2

Explanation:

Answer:

potential - water behind a dam, car parked at the top of a hill, a yo-yo before being released, river water at top of waterfall, a book on a table before it falls, a child at the top of a slide, ripe fruit before it falls.

kinetic - moving car, bullet from a gun, wind mills, flying airplane, walking, running, cycling, rollercoasters.

If blinded by an approaching motor vehicle at night, it is best to slow down and avoid looking directly into the lights of the approaching vehicle which is denoted as option C.

This refers to something which is used to transport people and goods from one place to another and examples include car, lorry etc. The lights are used at night for proper vision of the road so as to reduce the risk of accidents on the road.

In a situation whereby an individual is blinded  by an approaching motor vehicle at night, it is best to slow down and avoid looking directly into the lights of the approaching vehicle so as to prevent temporary vision impairment.

This helps to prevent accidents on the road and for the safety of the driver thereby making it the correct choice.

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A concave mirror is a type of optical surface that has a reflective surface that curves inward. This type of mirror is often used in optical devices, such as telescopes and magnifying glasses.

The design of these devices involves only one optical surface, the concave mirror, which is used to focus light onto a specific point or image. The curvature of the mirror determines how the light is reflected and focused, and the distance between the mirror and the object being viewed affects the magnification and clarity of the image. The simplicity of the design involving only one optical surface makes it easier to produce and maintain optical devices, and it also allows for greater precision and accuracy in the resulting images. Overall, the use of a concave mirror as the sole optical surface in a design offers a cost-effective and efficient solution for a variety of optical applications.

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The answer is D. distance between trough and crest. Wavelength is the distance between two consecutive points of the same phase on a wave, such as two adjacent crests, troughs, or zero crossings.

Wavelength is the distance between two consecutive points of the same phase on a wave, such as two adjacent crests, troughs, or zero crossings. So the answer is the distance between the trough and crest.

The other options are incorrect. Option A is the length of time the wave has been in motion, which is not the same as wavelength. Option B is the distance between the trough and the trough, which is half of the wavelength. Option C is the distance between the quiet water level and the crest, which is not a physical measurement of the wave.

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1. If the amplitude of a wave increases, then the wavelength will decrease while the wave speed remains constant. If the frequency of a wave increases, then the wavelength will decrease while the wave speed increases. If the tension of the medium increases, then the wave speed increases while the wavelength remains constant. If the density of the medium increases, then the wave speed decreases while the wavelength remains constant.

2. If the amplitude of a wave increases, then the wave power increases as well. If the frequency of a wave increases, then the wave power increases. If the tension of the medium increases, then the wave power increases as well. If the density of the medium increases, then the wave power decreases.

3. If two waves of the same frequency and amplitude are combined, then the resulting wave will have the same frequency and amplitude as the original waves. If two waves of the same frequency but different amplitudes are combined, then the resulting wave will have a frequency equal to the original waves and an amplitude equal to the sum of the original amplitudes. If two waves of the same amplitude but different frequencies are combined, then the resulting wave will have an amplitude equal to the original waves and a frequency equal to the average of the original frequencies. If two waves of different amplitudes and frequencies are combined, then the resulting wave will have a frequency and amplitude that depends on the characteristics of the original waves.

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To prevent the acceleration at the lowest point of the pullout from exceeding 4.00 g, the minimum radius of the circle should be determined for a stunt pilot who changes her course from a vertical dive.

To find the minimum radius of the circle, we can start by calculating the acceleration at the lowest point of the pullout. The centripetal acceleration is given by the formula \(a = v^2 / r\), where v is the velocity and r is the radius. We are given that the acceleration should not exceed 4.00 g, where \(1 g = 9.8 m/s^2\). Therefore, the maximum acceleration allowed is \((4.00 * 9.8) m/s^2\).

Given the speed at the lowest point of the circle, 100 m/s, we can substitute these values into the centripetal acceleration formula and solve for the radius. Rearranging the formula, we have \(r = v^2 / a\). Substituting the values, we get\(r = (100^2) / (4.00 * 9.8) = 255.10 meters\).

To calculate the apparent weight of the pilot at the lowest point of the pullout, we need to consider the net force acting on the pilot. At the lowest point, the net force is the sum of the gravitational force and the centripetal force. The apparent weight of the pilot can be found by subtracting the centripetal force from the gravitational force.

Since we know the mass of the pilot is 53.0 kg, we can calculate the gravitational force using F = m * g, where g is the acceleration due to gravity (\(9.8 m/s^2\)). The centripetal force is given by \(F = m * a_c\), where \(a_c\) is the centripetal acceleration. Substituting the values, we find the apparent weight of the pilot.

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Answer:

conduction i think

Explanation:

Answer:Conduction

Explanation:

Power is needed for (1) acceleration and (2) lifting the loaded chairs. These two parts can be calculated separately and then added together.

(1) Power for acceleration:

The final speed of the lift is

V=(10 km/h)(1 h×1000 m60 sec×1 km)=2.887 m/s.

Then the power needed is

Pa=12m(V2−V20)/Δt=12(50×250 kg)(2.778 m/s)2=9.6 kW.

(2) Power for lift

Assume that the acceleration is constant (i.e. power supply is constant), its value will be

a=ΔVΔt=2.778 m/s5 s=0.556 m/s2.

Then the vertical lift during acceleration will be

(12at2)×(2001000)=1.36 m.

Hence, the power needed to increase the potential energy of the lift is

Pg=mgΔhΔt=(50×250 kg) (9.89 m/s2)(1.36 m)/(5 s)=3.41 kW.

Then the total Power required is

Ptotal=Pa+Pg=9.6+34.1=43.7 kW.

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Answer:

Average velocity = 100/3 m/s....................

Answer:b) atoms

Explanation:which are in turn made up of protons, neutrons and electrons

Answer:

B. Hope it helped brainiest plz

Explanation:

B. is that answer