A parallel-plate capacitor is disconnected from a battery, and the plates are pulled a small distance further apart. Do the following quantities increase, decrease, or stay the same?.

Answer:

earthquakes usually cause wide cracks in the earth's surface; landslides may also result from earthquakes

Explanation:

Answer:

63.2N

Explanation:

\(Solution,\\\\Mass(m)=39.5kg\\\\\\Gravity(g)=1.6m/s^{2} \\Now,\\\\Weight -on- moon=m*g=39.5*1.6m/s^{2} =63.2N\)

Answer:

See below

Explanation:

Since it is non-uniform acceleration ( it varies with time as given)

The integral of acceleration is velocity

so integrate between 0 and three   15 m/s^2 t

    =   1/2  ( 15 t^2 )   + k      between 0 and 3    ( k is a constant we will ignore)

            = 67.5   - 0     =   67.5 m/s   velocity

the integral of velocity is displacement

 1/2 (15t^2 )   integrated becomes     1/6 15 t^3    from 0 to 3  ( ignoring a constant again)

                                      1/6 * 15 * (3^3 ) = 67.5 meters displacement

THANX for those who noted my errors in my first posted response !!

Answer:

4.0 m/s ^2

Explanation:

The acceleration of the block weighing 80 n attached to a spring scale, and both are pulled to the right on a horizontal surface with negligible friction between the block and the surface will be 4 m/s² when it reads 32 n.

Acceleration is physical quantity used to express the rate of change in velocity of a moving massive body. Acceleration of an object is directly proportional to the force acting and inversely proportional to the mass.

The equation relating force and acceleration is F = ma. Thus as the mass of the body increases, acceleration decreases and this is called deceleration.

Given that the weight of the body is 80 n. It is the product of mass and gravity of 10 m/s². Thus mass m = 80/10 = 8 kg.

The scale reads a force of 32 Newton for the body weighing 8 Kg. Hence the acceleration can be calculated as follows:

a = F/m

   = 32 N/ 8 Kg

   = 4 m/s².

Therefore, when the acceleration of the body of 8 kg when the scale reading is 32 N is 4 m/s².

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Answer:

C

Explanation:

Answer:

The handrails must be approximately 10.63 meters long

Explanation:

The given parameters are;

The height of the bleachers, h = 8 m

The depth of the bleachers, d = 7 m

The length of the hand rails to go along the bleachers from bottom to top is given by Pythagoras' Theorem as follows;

The length of the hand rail = √(d² + h²)

∴ The length of the hand rail = √(7² + 8²) = √113 ≈ 10.63

In order for the handrails to go along the bleachers from top to bottom, they must be approximately 10.63 meters long.

If a spacecraft could travel at 99% of the speed of light, it would take approximately 101,010 years to cross the diameter of the Milky Way galaxy.

To calculate the time it would take for the spacecraft to cross the galaxy, we need to divide the diameter of the Milky Way (100,000 light-years) by the spacecraft's velocity (99% of the speed of light).

The speed of light is approximately 299,792 kilometers per second (km/s). So, 99% of the speed of light would be 0.99 multiplied by 299,792 km/s, which is approximately 296,794 km/s.

Now, we convert the diameter of the galaxy into kilometers. One light-year is approximately 9.461 trillion kilometers. Therefore, the diameter of the Milky Way in kilometers is 100,000 light-years multiplied by 9.461 trillion kilometers per light-year, resulting in 9.461 quadrillion kilometers.

Finally, we divide the distance by the velocity to find the time: 9.461 quadrillion kilometers divided by 296,794 km/s gives us approximately 31.871 million seconds. Converting this to years, we divide by the number of seconds in a year (approximately 31.536 million seconds), resulting in approximately 101,010 years.

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Answer:

12.3°C should be the correct answer

Answer:

12.3

Explanation:

Answer:

2.8

Explanation:

power=work done/time

so, to calculate time

we know,

time(s)=work done(j)/power(w)

=350/125

=2.8

The average speed of the person walking with up to a distance of 2.3 miles within 30 minutes is 4.6 miles/hr. This is equivalent to 2.05 m/s.

Average speed of an object is the measure of the distance covered per unit time. It is the ratio of distance to the time of travel. The rate of speed is called velocity.

Greater the distance covered within smaller time, then greater is  the speed of the object.

Given that,

distance = 2.3 miles.

time = 30 minutes = 0.5 hours

then speed = distance/time

v = 2.3 miles /0.5 hours = 4.6 mph.

1 miles/hour = 0.447 m/s

then 4.6 mph = 4.6 mph × 0.447 m/s/ 1 mph = 2.05 m/s.

Therefore, the average speed of Mr. Tim is 2.05 m/s.

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When we talk about resonant frequencies, we refer to the natural frequencies at which an object vibrates when it's disturbed. The number of antinodes, on the other hand, refers to the points on the standing wave where the displacement is at its maximum. So, if we divide each resonant frequency by the corresponding number of antinodes, we obtain a value that represents the frequency at each antinode.

There is indeed a pattern that emerges when we perform this calculation. We find that the frequency at each antinode is a constant value, irrespective of the resonant frequency. This value is known as the fundamental frequency or the first harmonic. It represents the lowest possible frequency at which an object can vibrate.

The significance of this pattern is that it tells us that the different harmonics of an object's vibration are all integer multiples of the fundamental frequency. This is known as the harmonic series and is a fundamental concept in physics and music theory. By understanding this pattern, we can predict the resonant frequencies of an object and even manipulate them to our advantage in various applications.

When you take resonant frequencies and divide each by the corresponding number of antinodes, you may observe a pattern. This pattern typically shows that the resulting value remains relatively constant. The significance of this pattern is that it highlights the fundamental frequency of the system. The fundamental frequency is the lowest frequency at which a system can vibrate, and it serves as the basis for all the other resonant frequencies, which are usually integer multiples of the fundamental frequency. This relationship between resonant frequencies and antinodes helps us understand the harmonic nature of oscillating systems and their modes of vibration.

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The magnitude of the electric field at the position of the third particle is 2.52 x 10⁶ N/C, causing it to remain stationary.

Assuming the third particle has a charge of 0, we can use Coulomb's law to find the magnitude of the electric field at the third particle's position due to the other two charges:

E = k * (q1 / r1² + q2 / r2²)

where k is the Coulomb constant, q1 and q2 are the charges of the first two particles, and r1 and r2 are the distances from the third particle to the first two particles.

Since the triangle is equilateral, the distances from the third particle to the first two particles are both 2.0 cm. Plugging in the values:

E = (8.99 x 10⁻⁹ N*m²/C²) * (4.5 x 10⁻⁹ C / (0.02 m)² + 9.0 x 10⁻⁹ C / (0.02 m)²)

E = 2.52 x 10⁶ N/C

So the magnitude of the electric field at the third particle's position is 2.52 x 10⁶ N/C. Since the third particle has a charge of 0, there is no force on it and it will remain stationary.

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Answer:

volume :: is the level at which something is heard or the amount of space that something takes up.

Density :: is a measure of mass per volume. The average density of an object equals its total mass divided by its total volume.

Answer:

The density, of a substance is its mass per unit volume. The symbol most often used for density is ρ, although the Latin letter D can also be used. Mathematically, density is defined as mass divided by volume: {\displaystyle \rho ={\frac {m}{V}}} where ρ is the density, m is the mass, and V is the volume

The equivalent resistance of the circuit is 65.98 Ω.

What is Resistor?

A resistor is an electrical component that limits or regulates the flow of electrical current in a circuit. It is designed to provide a specific amount of resistance to the flow of electrons, measured in ohms, and is typically made of a material that can resist the flow of electricity, such as carbon or metal. Resistors are used in a wide range of electronic devices and circuits, from simple LED flashers to complex computer systems.

To find the equivalent resistance of the circuit, we need to use the formula for resistors in parallel:

1/Req = 1/R1 + 1/R2 + 1/R3 + 1/R4

where Req is the equivalent resistance, and R1, R2, R3, and R4 are the resistances of the four resistors.

Substituting the given values, we get:

1/Req = 1/6.60 × 102 + 1/2.40 × 102 + 1/2.00 × 102 + 1/2.00 × 102

1/Req = 0.01515

Req = 65.98 Ω

Therefore, the equivalent resistance of the circuit is 65.98 Ω.

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Answer:

To start something moving, a push force must be greater than resisting forces such a friction.

Explanation:

The force of resistance, for example friction, slows things down, so the push force must be greater in order to increase the speed or to start something moving.

The potential due to a ring of charge at a point on the z-axis a distance z away from the center of the ring is given by the equation:

Vring = kQ / √(R^2 + z^2)

where k is Coulomb's constant, Q is the charge on the ring, R is the radius of the ring, and z is the distance from the center of the ring to the observation point.

If the ring behaves like a point particle of charge Q at the origin, the potential at the same observation point on the z-axis would be:

Vparticle = kQ / z

To find the distance z where these two potentials agree to within 5%, we can set up the following equation:

|Vring - Vparticle| / Vparticle ≤ 0.05

Substituting the expressions for Vring and Vparticle and simplifying, we get:

|√(R^2 + z^2) - z| / z ≤ 0.05

Squaring both sides and rearranging, we get:

(R^2 / z^2) ≤ 0.0025

Taking the square root of both sides, we get:

R / z ≤ 0.05

Solving for z, we get:

z ≥ R / 0.05

Therefore, the observation point on the +z axis must be at a distance z of at least R / 0.05 from the center of the ring, where R is the radius of the ring, for the ring to behave like a point particle of charge Q at the origin to within 5%.

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Answer:

Nepal is one of the least developed countries. Solar power is well-founded than electricity. It's better to use solar power because it's a clean resource, the sun provides more energy than we will ever need.

Explanation:

a. The external area of the 1 μm³ cube-shaped kaolinite particle is 6 μm².

b. The mass of the particle is approximately 2.65e-12 grams.

c. The specific surface area of kaolinite is approximately 2.26 million square meters per gram.

a. To calculate the external surface area of the kaolinite particle, we need to find the area of each face of the cube and sum them up.

The cube has six faces, each with an area of (1 μm)² = 1 μm².

b. The mass of the kaolinite particle can be calculated using its volume and particle density.

The volume of the particle is 1 μm³.

To convert the volume to cubic meters, we divide by 1,000,000,000 (1 μm³ = 1/1,000,000,000 m³).

So the volume of the particle is 1/1,000,000,000 m³.

The mass is then calculated by multiplying the volume by the particle density:

Mass = Volume x Particle density

Mass = (1/1,000,000,000 m³) x 2.65 Mg/m³

Mass = 2.65/1,000,000,000 Mg

Mass = 2.65 μg

c. The specific surface area of kaolinite is the external surface area of the particle per unit mass.

Specific surface area = External surface area / Mass

Specific surface area = (6 μm²) / (2.65 μg)

Specific surface area = 2.26 μm²/μg

To convert to m²/g, we divide by 1,000,000 (1 μm² = 1/1,000,000 m² and 1 μg = 1/1,000,000 g).

Specific surface area = 2.26/1,000,000 m²/g

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we have that from the Question"Three people trying to move a box. Which set of forces will result in a net force on the box of 20 N to the right?" it can be said that  

From the Question we are told

Three people trying to move a box. Which set of forces will result in a net force on the box of 20 N to the right?

Generally the equation for Net Force is mathematically given as

Fn=Fx+Fy...

Therefore

The force from the option that give a  Net Force  of 20 to the right is

\(Fn=(28+10)-(18)\\\\Fn=20N\)

Therefore

The set of forces which will result in a net force on the box of 20 N to the right is

Option D

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Answer: The correct answer is A

55N, 16N, 17N

Explanation: I took the quiz

Answer:

The ability to do something or act in a particular way, especially as a faculty or quality.

"The power of speech"

Answer:

\(\huge\boxed{\sf E = 42 \ J}\)

Explanation:

Force = F = 6 N

Distance = d = 7 m

Energy = E = ?

Here, Energy is gained in the form of work done. So, the formula will be:

E = Fd

Put the given data in the above formula.

E = (6)(7)

\(\rule[225]{225}{2}\)

Answer:

6.58×10⁻¹⁸ J

Explanation:

Applying

E = kq²/r.................. Equation 1

Where E = potential energy, q = charge on each electron, r = distance between the electron, k = coulomb's constant.

From the question,

Given: r = 3.5×10⁻¹¹ m,

Constant: q = 1.6×10⁻¹⁹ C, k = 8.99×10⁹ Nm²/C²

Substitute these values into equation 1

E = (1.6×10⁻¹⁹)²(8.99×10⁹)/(3.5×10⁻¹¹)

E = 6.58×10⁻¹⁸ J

Answer:

D-A radiator emitting warm air and drawing in cool air

Explanation:

Answer:Ghana - Accra Togo - Lomé I hope this helps mark me brainlist

Explanation:

Accra is the Capital of Ghana

Accra was founded in the 17th century by the Ga people. It became the capital of the British Gold Coast in 1877 and the capital of Ghana on the formation of the country as an independent state in 1957
Accra Is the Second Most Expensive City in Africa

Accra is known for its colorful textile and used or second-hand clothing markets. Located inside the Makola Market, Kantamanto is the largest trading point in all of Accra.

The capital of Togo is Lomé

Lomé, city, capital of Togo. Lomé lies on the Gulf of Guinea (Atlantic coast) in the extreme southwestern corner of the country. Selected as the colonial capital of German Togoland in 1897, it became important as an administrative, commercial, and transport centre.

It is also the country's chief port, from where it exports coffee, cocoa, copra, and oil palm kernels- Lome

Lomé was founded by the Ewe, an indigenous ethnic group, in 1880. Located on the southwestern Atlantic coast of Togo, Lomé has a long history of trade. In 2000, an estimated 900,000 people resided in Lomé. Europe's “Scramble for Africa” began in 1880.

It is important to note that the debate between scientific realism and antirealism is ongoing and complex, with various nuances and perspectives within each position. Different philosophers of science and scientists may hold different views on the nature of scientific terms and their relationship to reality.

According to a scientific realist perspective, scientific terms for unobservable phenomena such as "atom" and "black hole" are seen as referring to entities that truly exist in reality. Scientific realists believe that scientific theories and concepts accurately capture aspects of the world, including unobservable entities and phenomena. They argue that scientific theories provide the best explanation of the natural world and aim to describe the underlying structure and mechanisms of reality.

On the other hand, scientific antirealists hold a different view. They argue that scientific terms that refer to unobservable phenomena do not necessarily correspond to something that exists independently in reality. Antirealists often emphasize the instrumentalist view of science, which suggests that scientific theories are simply tools or frameworks that help us organize and predict observable phenomena, without making claims about the ultimate nature of reality.

Antirealists may argue that scientific theories are subject to revision and change over time as new evidence emerges, suggesting that the terms used to describe unobservable phenomena are not fixed and may not have a one-to-one correspondence with actual entities in reality. They may also highlight the role of social and cultural factors in shaping scientific knowledge, suggesting that scientific terms are influenced by human conventions and interpretations.

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Light is a form of electromagnetic radiation with a wavelength which can be detected by the human eye. It is a small part of the electromagnetic spectrum and radiation given off by stars like the sun. Animals can also see light. The study of light, known as optics, is an important research area in modern physics.

Answer:

hope it is helpful to you

The SI unit of wavelength of a wave is meters (m).

Answer:

Directional hypothesis is an example of a directional research hypothesis.

Explanation:

Directional hypothesis: A directional (or one tailed hypothesis) states which way you think the results are going to go, for example in an experimental study we might say…”Participants who have been deprived of sleep for 24 hours will have more cold symptoms in the following week after exposure to a virus than

Answer:

Mount Everest formed from a tectonic smashup between the Indian and Eurasian tectonic plates tens of millions of years ago.

Explanation: