(ii) two charged dust particles exert a force of 4.6 * 10-2 n on each other. what will be the force if they are moved so they are only one-eighth as far apart?

A star with a temperature of 10,000 Kelvin would appear bluish-white to human eyes. The color of a star is determined by its temperature, with hotter stars emitting bluer light and cooler stars emitting redder light.

At 10,000 Kelvin, the star is relatively hot, and it emits a significant amount of blue light. This blue light dominates the star's overall color perception, giving it a bluish hue.

However, it's important to note that stars do emit light across a wide range of wavelengths, including those outside the visible spectrum.

While human eyes are most sensitive to light within the visible range, a star's emission spectrum may extend beyond what we can see. Nonetheless, the visible light emitted by a star with a temperature of 10,000 Kelvin would predominantly appear as a bluish-white color to human observers.

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The reliability of the parallel components at 100 hours is 0.9816.

Reliability is the probability that a component or system will function without failure over a given period of time. In the case of parallel components, their reliability is influenced by their individual failure rates.

To calculate the reliability of parallel components, we can use the formula:

R(t) = 1 - [1 - R1(t)] * [1 - R2(t)]

where R(t) is the reliability at time t, R1(t) is the reliability of the first component at time t, and R2(t) is the reliability of the second component at time t.

Given the failure rates λ1 = 0.0034 and λ2 = 0.0105, we can calculate the reliabilities at 100 hours as follows:

R1(100) = e^(-λ1 * t) = e^(-0.0034 * 100) ≈ 0.6703

R2(100) = e^(-λ2 * t) = e^(-0.0105 * 100) ≈ 0.3499

Substituting these values into the reliability formula:

R(100) = 1 - [1 - 0.6703] * [1 - 0.3499] ≈ 0.9816

Therefore, the reliability of the parallel components at 100 hours is approximately 0.9816.

Reliability in parallel systems involves calculating the combined reliability of multiple components or subsystems. The formula used in this explanation assumes that the failure rates of the components are constant over time. If the failure rates change over time, more advanced techniques, such as fault trees or reliability block diagrams, may be required to accurately assess the system reliability.

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Answer:

Mass , this is the answer because mass allows objects of any size to be moved depending on the force of the impact , push or turn

Answer:

In a permanent magnet, the magnetic field comes from the motion of the electrons inside the material, or, more precisely, from something called the electron spin. The electron spin is a bit like the Earth spinning on its axis. The magnetic field is a vector, the same way the electric field is.

Explanation:

Einstein was the first to postulate that light is made up of photons, which are essentially energy bundles.

A photon is a microscopic particle made up of electromagnetic radiation waves. Maxwell demonstrated that photons are merely electric fields moving through space. Photons move at the speed of light and have no charge or rest mass. Charged particles produce photons, though they can also be produced by other processes, such as radioactive decay.

It's common to refer to photons as energy packets. This analogy is excellent because a photon has uncondensable energy. An alternating electric field is how this energy is kept in reserve. The universe's size, which is the longest theoretical wavelength of light, and the Planck length, which some theories claim to be the smallest, have never been measured. These energy packets may travel great distances without losing energy or speed. In vacuum, photons move at the speed of light, which is 2.997 x 108 m/s.

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The instrument which is used to control current in an electric circuit is rheostat.

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Answer:

or bhai kya haal h

hum bhi india se hi h

Speed, distance, and position are scalar quantities, while velocity, displacement, average velocity, and acceleration are vector quantities.

Speed refers to how fast an object is moving and is a scalar quantity, with only magnitude, without direction. Distance is a scalar quantity that refers to the amount of space between two points, also having only magnitude.

Position is a scalar quantity that refers to the location of an object in space and also has only magnitude.

Velocity, on the other hand, is a vector quantity, as it has both magnitude and direction. It is the rate of change of an object's position over time.

Displacement is another vector quantity, and it refers to the change in position of an object from its starting point.

Average velocity is a vector quantity that is the average of all velocity changes during a certain time interval.

Acceleration is also a vector quantity and refers to the rate of change of velocity. It measures how quickly the velocity of an object changes, and like velocity, it has both magnitude and direction.

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Answer:

Well it really depends because he found out about a lot of things in a lot of scientific fields actually. He is known for contributing Pascal's triangle and probability theory. He also invented an early digital calculator and a roulette machine. In the field of physics, Blaise contributed to the study of atmospheric pressure by discovering that vacuums are real and exist in the real world.

Answer:

Well it really depends because he found out about a lot of things in a lot of scientific fields actually. He is known for contributing Pascal's triangle and probability theory. He also invented an early digital calculator and a roulette machine. In the field of physics, Blaise contributed to the study of atmospheric pressure by discovering that vacuums are real and exist in the real world.

Explanation:

Answer:

To say we have a 12.0-V battery implies that its terminals have a 12.0-V likely contrast. At the point when such a battery moves charge, it puts the charge through an expected distinction of 12.0 V, and the charge is given an adjustment of potential energy equivalent to Δ U = q Δ V .

six cells

There are six cells to a 12 volt lead corrosive battery. A battery cell's greatest capacity to convey current (amps).

A 6 cell lithium particle pack has an ostensible voltage of 21.6V to 22.2V and a most extreme charge voltage of 25.2 volts

Explanation:

To move with the same acceleration as the 10kg box, the 50kg box needs higher net force.

The term "net force" refers to the combined effects of all the forces exerted on a moving body, including gravitational, frictional, and normal forces. FNet equals Fa, Fg, Ff, and FN.

Newton's Second Law of Motion states that

A mass-proportional force is needed to accelerate an item.

The following formula determines the net force necessary to move an item at a given acceleration:

net force = mass x acceleration

The 50kg box and the 10kg box both accelerate at the same rate, but the 50kg box's net force need is more than the 10kg box's because of its heavier mass.

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The given problem can be solved using the following free-body diagram:

The diagram is the free-body diagram for the pulley that is holding the weight. Where:

Now we add the forces in the vertical direction:

Adding like terms:

Now, since the velocity is constant this means that the acceleration is zero and therefore the sum of forces is zero:

Now we solve for "T" by adding "mg" from both sides:

Now we divide both sides by 2:

Now we substitute the values and we get:

Solving the operations:

Now we use the free body diagram for the second pulley:

Now we add the forces in the vertical direction:

The forces add up to zero because the velocity is constant and the acceleration is zero:

Solving for the force:

Therefore, the pulling force is equal to the tension we determined previously and therefore is:

Answer:

(Option B)The car travels 15km in 15 minutes.

Explanation:

Notice that the speed is written using units of km/h and the time is written using units of minutes.

Convert the time interval to hours. Remember that 1 hour equals 60 minutes:

15 min = 15 min × \(\frac{1h}{60~min}=0.25h\)

The distance d that a particle travels during a time t if it moves at an average speed v is given by the formula:

d = v · t

Replace v=60km/h and t=0.25h to find the distance traveled by car:

\(d=(60\frac{km}{h}) ~x~(0.25h)=15km\)

Therefore, the car travels 15km in 15 minutes.

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If you have any queries please ask.

Answer:

The expansion and contraction of materials can also cause problems. For example, bridges expand in the summer heat and need special joints to stop them bending out of shape.A bimetallic strip has two metal strips glued together. One of these metals expands more for each degree temperature rise than that other.

The estimated force between the marbles, after the transfer of 100 billion electrons, is approximately 5.75 × 10^-5 Newtons.

The force between two charged objects can be estimated using Coulomb's law, which states that the force (F) between two charged particles is directly proportional to the product of their charges (q1 and q2) and inversely proportional to the square of the distance (r) between them. Mathematically, it is expressed as F = \(\frac{k (|q1| |q2|) }{r^{2} }\), where k is the electrostatic constant.

In this scenario, we have two small neutral marbles. When 100 billion electrons (1011 e) are transferred from one marble to the other, one marble gains a net negative charge equal to the charge of the electrons transferred, and the other marble gains an equal positive charge.

To estimate the force, we need to determine the charges involved and the distance between the marbles. The elementary charge (e) is approximately 1.6 × \(10^-19\) Coulombs. Therefore, the charge transferred is approximately (1011 e) x (1.6 × \(10^-19\) C/e) = 1.6 × \(10^-8\) C.

Assuming the marbles have equal but opposite charges, each marble would have a charge of 0.8 × \(10^-8\) C. The distance between the marbles is given as 10 cm, which is equivalent to 0.1 meters. Substituting these values into Coulomb's law, we have F = k (0.8 x \(10^-8\) C * 0.8 × \(10^-8\) C) / (0.1 m)\(^2\).

The electrostatic constant (k) is approximately 8.99 × 10^9 N m^2/C^2.

Calculating the force, we get F ≈ 5.75 × \(10^-5\) N. Therefore, the estimated force between the marbles, after the transfer of 100 billion electrons, is approximately 5.75 × \(10^-5\) Newtons.

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Answer:

Explanation:

First, remember your age.

Then, multiply it times 365 x 24 x 60 x 60.

Or basically, multiply it times 315.36 x 10⁵

The second thinnest coating of magnesium fluoride for a lens system primarily used for 695 nm red light is approximately 503 nm.

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

To determine the second thinnest coating of magnesium fluoride for a lens system primarily used for 695 nm red light, we will use the formula for thin film interference:

t = (mλ) / (2n)
where t is the thickness of the coating, m is the order of interference (1 for the thinnest coating, 2 for the second thinnest, etc.), λ is the wavelength of light (695 nm), and n is the index of refraction of MgF₂.

For the second thinnest coating (m=2), we can calculate the thickness:
t = (2 * 695 nm) / (2 * 1.38) ≈ 503 nm

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Answer:

I believe the answer is 2.0

Explanation:

The net force that would be required is 2 N

From the question,

We have that

A net force of 10 N accelerates an object at 5.0 m/s².

To determine the net force that would be required to accelerate the same object at 1.0 m/s²,

First, we will determine the mass of the object

From the Newton's second law of motion, we have that

F = ma

Where F is the force

m is mass

and a is acceleration

From the given information

F = 10N

a = 5.0 m/s²

Putting the above parameters into the formula, we get'

10 = m × 5.0

∴ m = 10 ÷ 5.0

m = 2 kg

∴ The mass of the object is 2kg

Now,

For the net force that would be required to accelerate the same object at 1.0 m/s²,

Using the same formula

F= ma

Here,

a = 1.0 m/s²

and m = 2 kg

∴ F = 2 × 1

F = 2 N

Hence, the net force that would be required is 2 N

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It will take (C) 11 s for the voltage across the capacitor to fall to 3.0 V.

We are given that,

t = time in seconds = ?

R = resistance=  4.0 × 10⁶ ohms.

C = Capacitance  = 2.0 μF

The following formula can be used to determine how long it takes for a capacitor to discharge through a resistor:

t = RCln(Vi/Vf).

t = time in seconds,

R is the resistance in ohms.

Capacity in farads is given by C. Vi is the capacitor's initial voltage across it in volts. Vf is the capacitor's final voltage across it in volts.

By entering the specified values, we obtain:

t = (4.0 106), (2.0 10 6F),*ln(12 V / 3.0 V)

t = 11 sec (rounded to the nearest whole number)

The voltage across the capacitor will therefore not reach 3.0 V for about 11 seconds. According to this formula, the discharge will occur through a series circuit that merely has a resistor and a capacitor.

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Answer:

how much?

Explanation:

Answer:

Electrons are retained by the electromagnetic force in the orbit around the nucleus since the nucleus is positively charged in the middle of the atom and absorbs the electrons charged negatively.

Hope this helps!

We have that for the Question "Why do you think the electron of the hydrogen atom stays close to the proton in the atom’s nucleus" it can be said that

From the question we are told

Why do you think the electron of the hydrogen atom stays close to the proton in the atom’s nucleus?

Generally

This is because of the law of attraction where unlike charges reply

Therefore

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Answer:

3.185×10^-29 kgm/s

Explanation:

Momentum(p)=mass×velocity

=9.1×10^-31×3.5×10

=3.185×10^-29 kgm/s

Newton's law of universal Gravity:

F = G * (M1 * M2)/ r^2

Where:

G = gravitational constant = 6.674 x10^-11 Nm^2kg^2

M1 = mass 1 = 45.9 kg

M2 = mass 2 = 5.98 x 10 ^24 kg

r = Distance between the 2 objects = 6.38 x 10 ^6 m

Replacing;

F = 450.048 N

Answer:

false

Explanation:

Answer:

The answer is B false

Explanation:

Gamma radiation is not composed of both neutrons and protons.

Answer:

(1.) 0.000207 (2.) 3300 (3.) 4030 (4.) 25.4

Explanation:

Answer:

Just conversion of units

Explanation:

Mnemonic Device: Kings Hate Dragons Because Dragons Can’t Make Money

(Kilo, Hecto, Deca, Base, Deci, Centi, Milli, Micro)

First one is decaliter which is 10 liters so I convert to liters first 0.0007 liters and then add another 0 to make it in daL so 0.00007

Second is converting from meters to millimeters so 1000mm go into one meter so 3100mm

Same thing for the mass one 0.3kg to ____g well there is 1000g/1kg and then the kg cancel out (this is the safest way to do this) and you get 300 grams

The last one is cm to decimeters not deca and there are 10 centimeters in each decimeters or you could convert to meters and then back again. I would just take the easy out and go with 25.4cm (I think of this one like mm to cm as it is the same ratio and how many times have you used a ruler with both units on it. A 30 cm ruler would be 3 decimeters for the whole 30 cm.

Answer:

No, this situation is not happening due to repression. Repression is a psychological defense mechanism in which a person unconsciously blocks out unpleasant or traumatic memories, thoughts, or feelings. In this situation, the person is simply not paying attention to their roommate and is instead focusing on the TV.

The density of impact craters on a moon's surface is generally proportional to the age of the moon. So, the older the moon is, the denser the impact craters will be. Here's how the moons rank in terms of the density of impact craters you would expect to observe on the surface are  Callisto,  Ganymede,  Titan and Io.

Ranking the moons in terms of the density of impact craters you would expect to observe on the surface, from highest to lowest:

a. Callisto, a moon that probably has never been active - Callisto is believed to have a heavily cratered surface with minimal geological activity. Since it has likely never been geologically active, the impact craters would accumulate over time, resulting in a high density of impact craters.

d. Ganymede, a formerly active moon - Ganymede is thought to have been active in the past but is now considered geologically inactive. Although it may have undergone resurfacing and some modification of its impact craters, the overall density of impact craters on Ganymede's surface would still be relatively high.

b. Titan, a possibly active moon - Titan is considered to be possibly active, with ongoing processes such as cryovolcanism and erosion. These active processes can modify the surface and potentially decrease the density of impact craters compared to Callisto and Ganymede.

c. Io, a definitely active moon - Io is known to be highly geologically active, with intense volcanic activity and constant surface changes. The active processes on Io, including volcanic eruptions and tectonic activity, would erase or modify the impact craters, resulting in a lower density of impact craters compared to the other moons.

So, the ranking from highest to lowest density of impact craters would be: a. Callisto, d. Ganymede, b. Titan, c. Io.

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Answer:

An electrical charge is created when electrons are transferred to or removed from an object. Because electrons have a negative charge, when they are added to an object, it becomes negatively charged. When electrons are removed from an object, it becomes positively charged

Expand the left hand side using distributive property:

Add 50 to both sides:

Divide both sides by 10:

Answer:

x = 13