PLEASE HELP!!!!! ILL MARK BRAINLYEST!!!


An ion is neutral and has no charge.


True
False

If the muscles were resistors, then expanding the muscles would increase the resistance and lessen the susceptibility to electrical shock. The correct option is (4).

What is electrical shock?

Muscles as Resistors:

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true increasing the plate area of a capacitor increases the capacitance.

Greater capacity to hold an electric charge is offered by larger plates. Consequently, capacitance rises as plate area increases. The electrostatic force field created between the plates has a direct correlation with capacitance. When the plates are closer together, this field is more powerful.

Improve the surface area of the parallel plate capacitor, shorten the distance between the plates, and utilize a dielectric material with a greater dielectric breakdown strength between the plates if you wish to increase the capacitance.

The distance between the conductors and the insulation surrounding the conductors both have an impact on capacitance. The capacitance will rise if the conductors are packed closer together or have a greater surface area (longer wires, shields, etc.).

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The orbital period of the satellite circling the Earth at an altitude of 3500 km is 163 minutes

The orbital period for the satellite circling the Earth at an altitude of 3500 km can be obtained as follow:

T² = (4π² / GM) × a³

T² = [(4 × 3.14²) / (6.67×10¯¹¹ × 5.987×10²⁴)] × 9900000³

Take the square root of both sides

T = √[((4 × 3.14²) / (6.67×10¯¹¹ × 5.987×10²⁴)) × 9900000³]

T = 9789.15 s

Divide by 60 to express in minutes

T = 9789.15 / 60

T = 163 minutes

Thus, we can conclude that the orbital period of the satellite is 163 minutes

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If the observed variation in flux is due to a variation in the intrinsic luminosity of the quasar, what was the variation timescale at the time the light was emitted will be found and Rmax is equals to 1.3*10^15 cm.

In particle physics experiments the energy available for the production of new effects is the most important parameter. The required large centre of mass energy can only be provided with colliding beams where little or no energy is lost in the motion of the centre of mass system (cms).

Besides the energy the number of useful interactions (events), is important. This is especially true when rare events with a small production cross section σp are studied.

The quantity that measures the ability of a particle accelerator to produce the required number of interactions is called the luminosity and is the proportionality factor between the number of events per second dR/dt and the cross section σp.

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1) Frequency (f) and angular frequency (w) are related through the equation w = 2πf, where f is the frequency in Hz, and w is the angular frequency in radians per second.

2) If the angular frequency of the circuit is very large, the circuit is changing rapidly. 3) Given a capacitor of fixed capacitance C, in a circuit with a very large angular frequency, the reactance Xc (Xc = 1/wC) is small, as the large value of w in the denominator makes the overall value of Xc smaller. 4) Given a capacitor of fixed capacitance C, in a circuit with a very large angular frequency, the current flows quickly in the circuit. This is because the reactance (Xc) is small, leading to a lower impedance (Z) and therefore allowing more current to flow.

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The exact same.  gravity has no effect on mass.

Answer:

Explanation:

COPPER

Because, copper

is just one of the more popular materials that is used for conductors

Resonance

The function of the auditory canal is to enhance the intensities of some frequency sounds by means of Resonance.

Resonance happens when an object's oscillations become more intense because they are matched by the vibrations of another object.

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The wavelength of the wave is 23.55 rad/s.

What is a wavelength simple definition?

Wavelength is the distance between identical points (adjacent crests) in the adjacent cycles of a waveform signal propagated in space or along a wire.

Distance b/w one crest and one trough is  λ/2 and b/w two crests or two trough it is  λ.

Therefore from 2nd crest to 6th trough the total distance

                   = 4 λ +  λ /2 => 9 λ/2

that is given as:

9 λ/2 = 24 cm

λ= 16/3 cm

V = w/k => w × λ /2pi => w = 2 × 3.14 × 20 × 3/16 => 23.55 rad/s

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The magnitude of the force of gravity that is acting on the objects is  1.33 × 10^−10 N.

We know that the gravitational force is an attractive force that acts on all the objects that do exist in the universe. Thus, once  body lies within the gravitational field of the earth this force of gravity can be said to act on the object. We have in the question two objects that are positioned on the cartesian coordinates as shown. The distance between the objects is 2 m.

Using the formula;

F = Gm1m2/r^2

F = gravitational force

G = gravitational constant

m1  and m2 = masses of the objects

r = distance of separation

Then we have;

F = 6.6726 × 10^−11 * 4 * 2/(2)^2

F = 1.33 × 10^−10 N

Thus the attractive force has a magnitude of  1.33 × 10^−10 N.

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Answer:

Find the dimension of each and every quantity in all the options to check whether they are the same or not. We can use any one formula of each identity to find its dimension.

Complete step by step solution:

To find the dimension of a quantity, we can use any formula related to that quantity but we will use the easiest ones to save time.

Force-

from Newton’s law of motion,

F=maF=ma

Dimension of force =[M][LT−2]=[MLT−2]=[M][LT−2]=[MLT−2]

Work done-

W=F×sW=F×s

Dimension of work=[MLT−2][L]=[ML2T−2]=[MLT−2][L]=[ML2T−2]

Momentum-

p=mvp=mv

Dimension of momentum=[M][LT1]=[MLT−1]=[M][LT1]=[MLT−1]

Impulse-

I=F×tI=F×t

Dimension of impulse=[MLT−2][T]=[

Since no data table was provided, the wave speed be calculated by taking the mean of speed values.

Also, the mathematically derived speed of sound is 343 m/s at 20 °C.

Sound is an example of a mechanical wave and require a material medium for it's transmission.

The speed of sound in air has been determined to be about 343 m/s at 20 °C.

The average wave speed can be calculated using the formula:

The formula relating speed of a wave, frequency, and wavelength is given below:

It is important to note that in this question, no data table or video was provided.

Therefore, the wave speed be calculated by taking the mean of speed values obtained in the experiment as shown in the video.

Also, the mathematically derived speed of sound is 343 m/s at 20 °C.

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The conventional steel vehicle (CV) uses 39,336 gallons of gasoline per year, resulting in an annual energy consumption of 100,000 MBTU. The CV's total life cycle energy use is 115,000  MBTU.

Annual gasoline use for CV:

CV's annual gasoline use = (12,000 miles/year) / (33 miles/gallon) = 364 gallons.

Energy consumption during operation (Ed) for CV:

CV's annual energy consumption during operation = (364 gallons/year) × (114,000 BTU/gallon) = 41,496,000 BTU.

Converting to MBTU: CV Ed = 41,496,000 BTU / 1,000,000 = 41.496 MBTU.

Life cycle energy use (Eiot) for CV:

CV's life cycle energy use = (CV's annual energy consumption during operation) + (energy required to produce CV) = CV Ed + (100 million BTU).

Converting to MBTU: CV Eiot = CV Ed + (100 million BTU / 1,000,000) = 41.496 MBTU + 100,000 MBTU = 100,041.496 MBTU.

Rounding to 3 significant figures: CV Eiot = 100,000 MBTU.

End of life energy consumption (Eic) for CV:

Given that the end-of-life energy consumption for CV is 15% higher than AIV, we can calculate Eic for AIV first. Let's denote AIV's Eic as X.

X = CV Eiot × 1.15 = 100,000 MBTU × 1.15 = 115,000 MBTU.

Thus, CV's Eic = 115,000 MBTU.

Therefore, the answers are:

CV Eiot = 100,000 MBTU (CV's life cycle energy use).

AIV Eiot = 100,041.496 MBTU (AIV's life cycle energy use).

Since the CV has a lower end-of-life energy consumption (Eic) compared to AIV, the CV would have a lower life-cycle energy use.

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The peak of a wave, measured from the baseline, is its amplitude.

Energy in the form of sound is created when objects vibrate. It needs a medium to spread through. As a result, sound cannot travel through a vacuum because there is no material to conduct sound waves.

The object's rocking back and forth creates the sound. Sound vibration is what this is. Oscillatory motion is another name for it. Oscillation describes the predictable rhythmic back-and-forth movement.

The height of a sound wave is quantified by its amplitude. The loudness or the greatest separation of the medium's vibrating particles from their initial positions are two ways to describe a sound wave's amplitude.

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We can use the formula for the centripetal force experienced by a charged particle moving in a magnetic field and when the cosmic ray proton enters our solar system, it experiences an interplanetary magnetic field that is perpendicular to its velocity.

(a) To find the magnetic field in the region of space where the cosmic-ray proton is executing a circular orbit, we can use the formula for the centripetal force experienced by a charged particle moving in a magnetic field. The centripetal force is given by the equation:

F = qvB

Where:
F is the centripetal force,
q is the charge of the particle (in this case, the charge of a proton),
v is the velocity of the particle,
B is the magnetic field strength.

The centripetal force can also be expressed as:

F = mv²/r

Where:
m is the mass of the proton,
v is the velocity of the proton,
r is the radius of the circular orbit.

Equating the two expressions for the centripetal force, we have:

qvB = mv²/r

Rearranging the equation, we can solve for the magnetic field B:

B = mv/rq

Given the energy of the proton (13.0 MeV), we can use the relation between energy and velocity for a particle with rest mass m:

E = mc² = (γ - 1)mc²

Where:
E is the energy of the particle,
m is the rest mass of the particle,
c is the speed of light,
γ is the Lorentz factor.

The Lorentz factor can be expressed as:

γ = E/mc² + 1

Substituting the given energy and rest mass of the proton, we can calculate the Lorentz factor.

Now, we can substitute the values of m, v, and r into the equation for the magnetic field B and solve for B.

(b) When the cosmic ray proton enters our solar system, it experiences an interplanetary magnetic field that is perpendicular to its velocity. In this case, the proton will follow a helical path in the magnetic field.

To find the radius of the proton's circular orbit in this field, we can use the formula for the radius of a helical path in a magnetic field:

r = mv/|q|B

Where:
m is the mass of the proton,
v is the velocity of the proton,
|q| is the magnitude of the charge of the proton,
B is the magnitude of the magnetic field strength.

Substituting the given values of m, v, and B into the equation, we can calculate the radius of the proton's circular orbit in this field.

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The quantum numbers (n, l, m1) for the n = 4 level of a hydrogen atom are (4, 0, 0), (4, 1, -1), (4, 1, 0), (4, 1, 1), (4, 2, -2), (4, 2, -1), (4, 2, 0), (4, 2, 1), (4, 2, 2), (4, 3, -3), (4, 3, -2), (4, 3, -1), (4, 3, 0), (4, 3, 1), (4, 3, 2), (4, 3, 3).

The quantum numbers for an electron in a hydrogen atom are given by the principal quantum number (n), azimuthal quantum number (l), and magnetic quantum number (m1).

For the n = 4 level, the possible combinations of quantum numbers are as follows:

1. (n = 4, l = 0, m1 = 0)

2. (n = 4, l = 1, m1 = -1)

3. (n = 4, l = 1, m1 = 0)

4. (n = 4, l = 1, m1 = 1)

5. (n = 4, l = 2, m1 = -2)

6. (n = 4, l = 2, m1 = -1)

7. (n = 4, l = 2, m1 = 0)

8. (n = 4, l = 2, m1 = 1)

9. (n = 4, l = 2, m1 = 2)

10. (n = 4, l = 3, m1 = -3)

11. (n = 4, l = 3, m1 = -2)

12. (n = 4, l = 3, m1 = -1)

13. (n = 4, l = 3, m1 = 0)

14. (n = 4, l = 3, m1 = 1)

15. (n = 4, l = 3, m1 = 2)

16. (n = 4, l = 3, m1 = 3)

These 16 sets of quantum numbers represent the possible electron configurations for the n = 4 level of a hydrogen atom.

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Answer:

I don't know sorry' please

Explanation:

the rate at which someone or something moves or operates or is able to move or operate.

The roller coaster's highest point is 6.12 metres above the ground.

Kinetic energy is the power a thing possesses as a result of motion. It is equal to the object's mass divided by the square of its velocity, or one-half of the object's mass. At its maximum speed of 50 m/s, the roller coaster car contains 3000j of kinetic energy.

The roller coaster's potential energy is equal to the height above the ground when it is at its highest point. Potential energy is equal to an object's mass times its gravitational acceleration times its height.

As a result, the roller coaster's highest point's separation from the ground is determined by 3000j divided by (50 m/s multiplied by 9.8 m/s2), or 6.12 metres.

Therefore, the roller coaster's highest point is 6.12 metres above the ground.

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The new acceleration would be 24.0 m/s/s.

Acceleration is the rate of change of velocity of an object over time. It is a vector quantity, meaning that it has both magnitude and direction. Acceleration is the result of applying a force to an object, and can be described mathematically as the change in velocity (or speed) divided by the time it takes for the acceleration to occur. Acceleration can also be caused by a change in the direction of motion and is measured in meters per second squared (m/s2). It is an important concept in physics, and is used to describe motion in objects ranging from cars to planets.

The new acceleration would be 24.0 m/s/s. This is because the acceleration of an object is directly proportional to the force applied to it, and inversely proportional to its mass. Therefore, doubling the mass of the object would halve the acceleration, since the force applied to the object remains the same.

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The retention factor Rf is the ratio of the distance traveled by the solute to the distance traveled by the solvent front.

The retention factor Rf is the ratio of the distance traveled by the solute to the distance traveled by the solvent front.

In this case;

Rf of the yellow pigment =  7.8 cm /  10.7 cm  = 0.73

Rf of the blue pigment = 6.5 cm/  10.7 cm  =0.61

Rf of the red pigment =  3.2 cm/10.7 cm  =0.30

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Answer:

5

Explanation:

vf = vi + at

20 = 5 + 3a

3a = 15

a = 5

The total energy of the body at evevry point is remained same due to the law of conservation of energy. Distance from A to B and final velocity of the ball just reach before C is 44.3 m/s.

d (distance) from A to B is = √2gh

In this case given are, g = 9.8 m/s² and h = 100m,

so here d = √(2⋅9.8⋅100) = 44.3m.

Final velocity ,v = √2gh

Here given are , v is the velocity, g is the acceleration due to gravity, and h is the height. In this case,

g = 9.8 m/s² ,h = 100m,

v = √(2⋅9.8⋅100)

= 44.3 m/s (final velocity)

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Answer:

Proteins are organic compounds containing nitrogen that are made of long, linked chains of amino acids and are a part of all living organisms.

The conversion of these temperatures are as follows:

To convert from Fahrenheit to Celsius, you can use the formula Tc = (5/9)(Th - 32) where Tc is the temperature in Celsius and Th is the temperature in Fahrenheit.

To convert from Celsius to Kelvin, you can use the formula Tk = Tc + 273.15 where Tk is the temperature in Kelvin and Tc is the temperature in Celsius.

(a) Convert these temperatures to the Celsius scale.

(b) Convert the Celsius temperatures in part (a) to Kelvin.

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12 × sin50 = 9.192533317........

Answer:False

Explanation:False

False if the univers out there does not have gravity and everything just floats how will it attract thinks if with out gravity it does not have a pull or push forse without a magnet so only now can gravity pull but in the universe it cant

Answer:

99n

Explanation:

9 times does the ball pass through the lowest point of its arc.

Pendulum: An object that is suspended from a fixed location by a string or rod and swings freely as a result of gravity and motion. frequently used to control electronics like clocks. Simple pendulum: A back-and-forth swinging pendulum.

Time period of pendulum is given by 2×π(L/g)^0.5  (where L is length of string)

T.P = 2.71 .(1.3/9.8)0.5

Numer of oscillations made in 9.8 s = 9.8/T.P

= 4.28 = 4 and 1 quarters

Ball passes through lowest point 2 times per oscillation, and 1 times in 1 quarter of the oscillation.

Therefore, Number of times Ball passes through lowest point = 4 x 2 + 1

= 9

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