What effect does the diameter of the string have on the lever arm? explain why we can ignore this effect

(a) time taken for the car to accelerate from v to 2v = t = [tex]\frac{2V-V}{a}[/tex]

(b) velocity of the car moving at 2t seconds = ΔV = 2at

(a) we know that,

a=[tex]\frac{V_{F}-V_{0} }{t}[/tex]

where, [tex]V_{F}[/tex] is the final velocity

[tex]V_{0}[/tex] is the initial velocity

a = acceleration

t = time

Time taken to accelerate from V to 2V:

t = [tex]\frac{2V-V}{a}[/tex]

(b) We know that,

a=[tex]\frac{V_{F}-V_{0} }{t}[/tex]

where, [tex]V_{F}[/tex] is the final velocity

[tex]V_{0}[/tex] is the initial velocity

a = acceleration

t = time

how fast is the car moving at 2t seconds after starting,

we can represent [tex]V_{F}[/tex] - [tex]V_{0}[/tex] = ΔV

at time = t= 2t, it becomes

a=[tex]\frac{V_{F}-V_{0} }{t}[/tex] = a = ΔV/2t

t= ΔV/2a

ΔV = 2at

Rate of change of velocity with time, both in terms of speed and direction is known as acceleration.

To learn more about acceleration visit:

https://brainly.com/question/12550364

#SPJ4

The distance traveled by the object is 32 m.

If an object is traveling with a consistent velocity, this is referred to as uniform motion.

The equation below gives the average speed of an item moving uniformly:

v = d/t

where

v= average speed

d = traveled distance

t= The amount of time used

The object in this problem is as follows:

v = 8.0 m/s is the average speed

The time was t = 4.0 s.

We determine the distance traveled by solving for d:

d = vt = (8.0)(4.0) = 32 m

Hence, the distance traveled by the object is 32 m.

Learn more about kinematic equations here:

https://brainly.com/question/24458315

#SPJ4

When the wave speed increases the wave stay the same to get the same standing wave pattern

Standing wave are the combination of two waves moving in opposite directions . Amplitude of both the waves is same and frequency is also same . The phenomenon is the result of interference

Wavelength and frequency are inversely related to each other .

frequency = c / wavelength

so if one get  change then the other changes. As one get decrease other will increase and vise versa. . The speed of the wave depends on the medium. Change in the frequency of the wave changes its form to go into the next harmonic so the wavelength changes .Also in order to maintain the wave pattern the wavelength remain same

Hence , speed of wave will not affect the wavelength of wave.

To learn more about standing waves here

https://brainly.com/question/28175505

#SPJ4

Direction of |a+b| is south east and that of |a-b| is north east.

Given

a = 3i - 2j

b = -i - 4j

To find,

a+b =?

a-b =?

|a+b| = |(3i - 2j - i - 4j)|

        = |2i - 6j|

        = [tex]\sqrt{2^{2} + (-6^{2}) }[/tex]

        = [tex]\sqrt{4+36}[/tex]

        = [tex]\sqrt{40}[/tex]

        = [tex]2\sqrt{10}[/tex]

|a-b| = |(3i - 2j) - (-i - 4j)|

       = |3i -2j + i + 4j|

       = |4i + 2j|

       = [tex]\sqrt{4^{2} + 2^{2} } \\[/tex]

       = [tex]\sqrt{16+ 4}[/tex]

       = [tex]\sqrt{20}[/tex]

       = [tex]2\sqrt{5}[/tex]

Direction of |a+b| is south east (|2i - 6j|, this shows 2 units to the right and 6 units down)

Direction of |a-b| is north east (|4i + 2j|, this shows 4 units right & 2 units up)

Learn more about vector calculation here:

https://brainly.com/question/27351405

#SPJ4

To place the poles of a 1. 5 v battery to achieve the same electric field is 1.5×10−2 m

The potential difference is related to the electric field by:

∆V=Ed

where,

∆V is the potential difference

E is the electric field

d is the distance

what is potential difference?

The difference in potential between two points that represents the work involved or the energy released in the transfer of a unit quantity of electricity from one point to the other.

We want to know the distance the detectors have to be placed in order to achieve an electric field of

E=1v/cm=100v/cm

when connected to a battery with potential difference

∆v=1.5v

Solving the equation,we find

[tex]d = \frac{ \:Δv}{e} [/tex]

[tex] = \frac{1.5v}{100v/m} [/tex]

[tex] = 1.5 \times 10 {}^{ - 2} m[/tex]

learn more about potential difference from here: https://brainly.com/question/28166044

#SPJ4

Answer: It's D

Explanation:

The military time corresponding to 3:00p.m is 1500, and it is pronounced as fifteen hundred hours.

To find the answer, we have to know more about the Military time.

Thus, we can conclude that the option B is right.

Learn more about the time here:

https://brainly.com/question/555814

#SPJ1

If we increase the length of the resistor, resistance will also increase and vice-versa.

It is given that in a wire simulation, we have to adjust only the length of the resistor.

It required to find the effect on resistor when adjust only the length of the resistor.

As we know that the length is directly proportional to the resistance of the wire that means is we increase the size or length of the wire then it also increase the resistance present in the wire. On the other hand if we decrease the length of the wire, it will decrease the resistance. This can be represented as:

Resistance = resistivity × length/area

This is also because there is more collision of the flowing electrons in the wire to the metal ions present there.

Thus if we increase the length of the resistor, resistance will also increase and vice-versa.

Learn more about the resistance here:

https://brainly.com/question/11431009

#SPJ4

Two point charges, feel a force of 1. 0 n when they are 2. 0 cm apart. if they are moved further apart to 8. 0 cm. The electric force between them will be F2 = 1/16 J

A charged particle, also called an ion, is an atom with a positive or negative charge. This happens whenever something called an ionic bond forms. Two particles that have different numbers of electrons (the smallest particle in an atom which is negative) start reacting to each other.

According to Coulomb's law, the force of attraction or repulsion between two charged bodies is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. It acts along the line joining the two charges considered to be point charges.

F1 = K q1*q2 / [tex]r1^{2}[/tex]

1 =  K q1*q2 / [tex]2^{2}[/tex]

F2 =  K q1*q2 / [tex]r2^{2}[/tex]

F2 =  K q1*q2  / [tex]8^{2}[/tex]

F1 / F2 = 64 / 4

1 / F2 = 16 / 1

F2 = 1/16 J

To learn more about Coulomb's law here

https://brainly.com/question/14110379

#SPJ4

600Hz is the driving frequency needed to create a standing wave with five equal segments.

To find the answer, we have to know about the fundamental frequency.

                                        f(n) = n * f (1)

where, f(1) denotes the fundamental frequency and the driving frequency f(n).

                                          f(4) = 4× f (1)

                                          480 = 4× f(1)

                                         f(1) = 480/4 =120Hz.

So, 120Hz is the fundamental frequency.

                      f(n) = n 120Hz,

                      f(5) = 5×120Hz=600Hz.

Consequently, 600Hz is the driving frequency needed to create a standing wave with five equal segments.

Learn more about the fundamental frequency here:

https://brainly.com/question/2288944

#SPJ4

The intensity of the microwave is 10.09 × 10⁵ W/m².

The unit of magnetic induction is the tesla (T). The magnetizing force, which induces the lines of force through a material, is called the field intensity, H (or H-field), and by convention has the units ampere per meter (A m−1) .

The portion of a material's magnetic field that results from an external current and is not intrinsic to the material itself is known as the magnetic field strength, also known as magnetic intensity or magnetic field intensity. It is measured in amperes per meter and represented as the vector H.

Magnetic Field, B = 9.2 × 10⁻⁵ T

[tex]I_{avg} = \frac{CB_0^2}{2\mu _0}[/tex]

       [tex]= \frac{(2.998*10^8 m/s) (9.2 * 10^-^5 T)^2}{2 ( 4\pi * 10^-^7)}[/tex]

      [tex]= 10.09[/tex] × [tex]10^5 \frac{W}{m^2}[/tex]

Therefore, the intensity of the microwave is 10.09 × 10⁵ W/m².

Learn more about intensity here:

https://brainly.com/question/24319848

#SPJ4

The speed of light waves travel in air is 3.0 * 10⁸ m/s, while the speed of sound waves in air at 25° C is 346.3 m/s.

Light waves travels 8.66 * 10⁵ times faster in air in comparison to sound waves in air.

The speed of light in water is 3.0 * 10⁸ m/s while the speed of sound in water is 1.481 m/s

The distance covered by a wave per second is known as the wave speed.

The speed of a wave varies according to the density of the medium it is travelling as well as the due to the frequency of the wave.

The speed that light waves travel in air = 3.0 * 10⁸ m/s

The speed that sound waves travel in the air at 25° C = 346.3 m/s

The ratio of the speed of speed that light waves travel in air to that of the speed that sound waves travel in the air at 20° C = 3.0 * 10⁸/346.3 = 8.66 * 10⁵

Therefore, light waves travels 8.66 * 10⁵ in the air in comparison to sound waves in air

The speed of light in water = 3.0 * 10⁸ m/s

The speed of sound in water = 1,481 m/s

Therefore, light waves travels much faster water than sound waves in water.

Lean more about wave speed at: https://brainly.com/question/13791938

#SPJ1

It follows coulombs law.          

According to Coulomb’s law, the force of attraction or repulsion between two charged bodies is directly proportional to the product of their charges and inversely proportional to the square of the distance between them. It acts along the line joining the two charges considered to be point charges.

In Short: F ∝ q1q2/d2

where,

ε is absolute permittivity,

K or εr is the relative permittivity or specific inductive capacity

ε0 is the permittivity of free space.

K or εr is also called a dielectric constant of the medium in which the two charges are placed.

One coulomb of charge is that charge which when placed at rest in vacuum at a distance of one metre from an equal and similar stationary charge repels it and is repelled by it with a force of 9 x 109 newton.

Learn more about Coulombs law here:

https://brainly.com/question/506926

#SPJ4

Explanation:

1/R = 1/R1 + 1/ R2

1/R = 1/960 + 1/640

1/R = 5 / 1920

So , Req = 384 + R3

Req = 384 + 180

[tex]\huge\red{A}\pink{N}\orange{S}{W}\blue{E}\green{R} [/tex]

If a violin string vibrates at 430 hz as its fundamental frequency,then the frequencies of the harmonics are 880, 1320, 1760

The frequency in physics is the number of waves passing a fixed location in a unit of time. It also indicates how many cycles or vibrations a body in periodic motion experiences in a given unit of time.

How frequently something occurs is what is meant by the word frequency. A person blinking their eyelids 47 times in a minute is an example of frequency. the quality or state of happening frequently.

Integer (whole-number) multiples of the fundamental frequency are used to define harmonics, which are voltages or currents that function at certain frequencies. This means that for a waveform with a fundamental frequency of 50 Hz, the second harmonic frequency would be 100 Hz (2 x 50 Hz), the third harmonic would be 150 Hz (3 x 50 Hz), etc.

To learn more about frequency please visit -
https://brainly.com/question/5102661
#SPJ4

The option that best explains the forces acting on the objects is that option b. Objects W and Y have balanced forces, and objects X and Z have unbalanced forces.

When the motion of an object is said to be altered, the forces are known to be in a sate that is seen as unbalanced.

Note that  Balanced forces are said to be one that are equal in size and also opposite in direction.

Hence, if forces are balanced, there is no alteration in motion and it is seen in cases if a person is pushed or pulled on an object that is seen from opposite directions but also has the same force.

Therefore, The option that best talks about the forces acting on the objects is that option b. Objects W and Y have balanced forces, and objects X and Z have unbalanced forces as it does better justice to it.

Learn more about forces from

https://brainly.com/question/4289010

#SPJ1

They are helium nuclei, which consist of two protons and two neutrons. The net spin on an alpha particle is zero. They result from large, perilous atoms via a process called alpha decay.

To learn more about helium nuclei, refer to:

https://brainly.com/question/26226232

#SPJ4

A process in which a large nucleus splits into two or more parts is called ?

(A) nuclear fission

An alpha particle is made up of _____.

(C) two protons and two neutrons

Which statement best describes the type of radioactive decay shown in the model?

(D) The model shows alpha decay, which is a type of nuclear fission.

Is beta decay a form of nuclear fission?

Responses

(A) No, it is not because the mass number does not change.

Which statement correctly classifies gamma emission?

(D) Gamma emission is a type of radioactive decay, but it is not a fission reaction.

i just did the quick check, hope this helps.

The hydrogen fusion process will begin after the protostar reaches a temperature of 10 million degrees kelvin, and it will then turn into a stable star.

The interstellar medium can sometimes be gathered into a large nebula, which is a cloud of gas and dust. A nebula can span a number of light years. These nebulae are where gas and dust can combine to produce stars. Until a star can combine hydrogen into helium, it cannot be considered a star. They are referred to as protostars before then. As gravity starts to gather the gases into a ball, a protostar is created. Accrution is the term for this procedure.

Gravitational energy starts to heat the gasses as gravity draws them into the ball's core, which causes the gasses to radiate radiation. Radiation initially just dissipates into space. However, much of the radiation is retained inside the protostar as it draws in stuff and becomes denser, which causes the protostar to heat up even more quickly.

The hydrogen fusion process will begin after the protostar reaches a temperature of 10 million degrees kelvin, and it will then turn into a star.

Learn more about a protostar here:

https://brainly.com/question/12534975

#SPJ4

When you have two of the same charges along a horizontal line, The electrical field is the greatest the closest it is to the charges. And there will be a zero charge in between the two like charges.

Electric field can be considered as an electric property associated with each point in the space where a charge is present in any form. An electric field is also described as the electric force per unit charge.

The formula of electric field is given as;

E = F /Q

Where,

E is the electric field.

F is a force.

Q is the charge.

The electrical field is the greatest the closest it is to the charges because there will be high electric strength and electric field strength is greatest where the lines are closest together and weakest where lines are furthest apart.  Also , there will be a zero charge in between the two like charges.

To learn more about Electric field  here

https://brainly.com/question/26446532

#SPJ4

Answer:

125 / 500 = 1/4    of the sample left after 3.0 yrs

1/2 * 1/2 = 1/4        sample has decayed thru 2 half-lives

2 * HL = 3

1 Half-Life = 1.5 yrs

When charging a system with vapor refrigerant from a refrigerant cylinder the cylinder will become cold .

What is a refrigerant charging cylinder used for?

What type of refrigerant can be added as a liquid or a vapor?

Blends like R410a or 404a must be added to a system as a liquid. Pure refrigerants like R22 can be added in liquid or vapor states.

Learn more about vapor

brainly.com/question/10054719

#SPJ4

Answer:

Approximately [tex]143\; {\rm T}[/tex] assuming that this transmission line is straight and infinitely long.

Explanation:

Lookup the permeability of free space: [tex]\mu_{0} = 4\, \pi\; {\rm T \cdot m \cdot A^{-1}[/tex].

Consider an infinitely-long straight wire in empty space carrying a current of [tex]I[/tex]. At a distance of [tex]r[/tex] from this wire, the magnitude of the magnetic field from the wire would be:

[tex]\begin{aligned} B &= \frac{\mu_{0}\, I}{2\, \pi\, R}\end{aligned}[/tex].

In this question, it is given that [tex]I = 500\; {\rm A}[/tex]. At a distance of [tex]R = 7.0\; {\rm m}[/tex] from this wire, the magnitude of the magnetic field from this cable would be:

[tex]\begin{aligned} B &= \frac{\mu_{0}\, I}{2\, \pi\, R} \\ &= \frac{(4\, \pi \; {\rm T \cdot m \cdot A^{-1}}) \, (500\; {\rm A})}{(2\, \pi)\, (7.0\; {\rm m})} \\ &\approx 143\; {\rm T}\end{aligned}[/tex].

The wavelength of the radio waves is 3.04 cm.

λf = c

λ = c/f

where,

λ = wavelength

c = speed of light

f = frequency

Given,

f = 98.6 MHz = 98.6 × 10⁶

c = 3 × 10⁸

To find,

λ =?

Put the values in the formula,

λ = c/f

λ = 3 × 10⁸/98.6 × 10⁶

  = 0.0304 × 10²  m

  = 3.04 cm

Therefore, the wavelength of the radio waves is 3.04 cm.

Learn more about the calculation of wavelength here:

https://brainly.com/question/8422432

#SPJ4

The cells in the middle latitude atmospheric circulations on earth are called the ferrel, westerlies.

The high latitude is roughly defined as being above 60° magnetic latitude; the middle latitudes are between 50° and 60° magnetic latitude; and everything below 50° magnetic latitude is regarded to be in the low latitude category. However, the precise location of this barrier is unknown.

Wait, what? magnetic horizons? And what is that? In any case, we usually refer to magnetic latitudes rather than geographic latitudes when discussing aurora and the various latitudes. You can claim that you have a better chance of seeing aurora when you are at a high geographic latitude (near the north or south pole). The earth's magnetic poles do not exactly align with the geographic poles, which makes what is generally true about it somewhat misleading.

To learn more about latitude atmosphere from the given link:

https://brainly.com/question/98524

#SPJ4

The light bulb would glow brighter.

a force that works against a body's direction of motion and seeks to stop or slow down motion, such as friction. a measure of how much a material prevents an electric current from flowing as a result of a voltage.

What is the law of resistance?

Resistance and Ohm's Law. According to Ohm's law, the resistance of the circuit and the current or energy travelling through the resistance are both exactly proportional to the voltage or potential difference between two places.

The current would grow since it is exactly proportionate to the voltage, increasing the light bulb's brilliance, or simply making it brighter.

to learn more about Resistance go to - https://brainly.com/question/15728236

#SPJ4

It will be approximately equal.

We can infer that all of the energy in the electron is Potential energy (PE) because the energy provided by the photon is hardly enough to outweigh the work function.

It will gain kinetic energy (KE) as it advances in the direction of the anode because it is moving through an electric field. All of the PE will have been transformed to KE by the time it reaches the anode.

According to the question

K = hf - W

W = Work function

The energy of photons is comparable. After conversion, there was only a little amount of KE remaining.

Therefore, PE (W) essentially equals KE (K).

It will about be equal.

Learn more about work function here:

https://brainly.com/question/19595244

#SPJ4

The volume of a solution, in milliliters, that contains 1. 5 g lino3 and has a concentration of 0. 40 m will be 54.35 m L.

Molarity is defined as the moles of a solute per liters of a solution. Molarity is also known as the molar concentration of a solution.

Molarity = n / V

where

n = number of moles

V = volume of solution in l

Molar mass of [tex]LiNO_{3}[/tex] = M of Li + M of N + 3 * M of O

                                    = 7 + 14 + (3*16)

                                    = 69 g/ mole

since , M = n / V

           n = m / molar mass of  [tex]LiNO_{3}[/tex]

substituting the value of n

Molarity  = (m / molar mass of  [tex]LiNO_{3}[/tex]  ) / V

V = m / molar mass of  [tex]LiNO_{3}[/tex]  * Molarity

   = 1.5 / 69 * 0.40

   = 54.35 mL

To learn more about molarity here

https://brainly.com/question/13386686

#SPJ4

The maximum velocity of electrons is  v = 3.20 × 10¹⁵ m/s

The wavelength of photons λ = 85 nm

W = 4.66 ev

     The emission of electrons happened and absorbed through the electromagnetic radiation is said to be photoelectric effect.

Photoelectric cells, photodiodes works on the principle of photoelectric effect.

According to of photoelectric effect,

                          E = hν

        Here,  hc / λ = W + KE max

                    hc / λ =  W + 1/2 mv² max

                   v² =  sqrt of (( hc / λ - W) (2/m))

                   I cap denotes λ ,

substituting all the values,

 v = sqrt of ( (6.623 × 10⁻³⁴ Js ) ( 3 × 10⁸ m/s) / (85 nm) - 4.66ev) (2/  9.1× 10⁻³¹

   v = sqrt of ((1.987800 ×  10⁻²⁵ / 85 × 10 ⁹ ) - 4.66 ev ) ( 2.197 × 10³⁰)          

   v = sqrt of ((2.338588 × 10⁻³⁶) - 4.66 ev ) ( 2.197 × 10³⁰)3.2

   v = 3.20 × 10¹⁵ m/s

Thus, the maximum velocity is calculated as  v = 3.20 × 10¹⁵ m/s.

Learn more about photoelectric effect,

https://brainly.com/question/1895423

#SPJ4

Three complete orders on each side of the m=0 order can be produced in addition to the m=0 order.

The ruling separation is d=1/(470mm-1)

[tex] = 2.1 \times 10 {}^{ - 3}mm [/tex]

Diffraction lines occurs at an angle θ such that dsin=mλ,when λ is the wavelength and m is an integer.

Notice that for a given order,the line associated with a long wavelength is produced at a greater angle than the line associated with shorter wavelength.

we take λ to be the longest wavelength in the visible spectrum (538nm) and find the greatest integer value of m such that θ is less than 90°.

That is,find the greater integer value of m for which mλ<d.

since,d/λ

[tex] = 538 \times 10 {}^{ - 9} m/2.1 \times 10 {}^{ - 6} [/tex]

There are three complete orders on each side of the m=0 order.

The second and third orders overlap.

learn more about diffraction from here: https://brainly.com/question/28168352

#SPJ4