Which object represents a negatively charged particle? which object represents a positively charged molecule? which object represents an uncharged molecule? which object will not move when in an electric field?

Which statement describes the path of electrons from a battery to a circuit?

The correct answer would be:

C. Electrons move away from the negative end of a battery and then

through the circuit toward the positive end of the battery.

we may estimate that the storm's effects will last for about 9.3 days.

We were informed that a wave is produced in the south pacific ocean. Additionally, these phrases produce waves that have a 15 m/s speed and can travel 12,000 kilometres. These waves, which are produced in the southern Pacific, can travel this far. Therefore, we simply utilise the standard equation that T equals distance times speed at the time of combat. Therefore, we must translate this distance into metres. Thus, 12,000 times 1000 is greater than 15. As Pete lacks seconds, the results are revealed. Thus, this can be expressed as eight times ten, increased to five seconds. So let's convert to our words first. Therefore, in terms of us, we will find that this equals to ours be 222 points. In order to determine the approximate number of days, we need to divide the amount by 24. 9.3 approximately Therefore, we may estimate that the storm's effects will last for about 9.3 days.

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Answer:

c) The balls have the same velocity after the collision

Explanation:

In a perfectly inelastic collision between two balls, there is a loss in the maximum kinetic energy of the system and the two ball stick together, and thereby have the same velocity after the collision and also the coefficient of restitution of the two balls is also zero accompanied by a loss in the kinetic energy of the system

Therefore, the correct option is that both balls will have the same (equal) velocity after the collision.

Explanation:

Work done = F * d = 100N * 0.5m = 50J.

Density is a physical property of matter that describes the relationship between an object's mass and its volume. It represents the amount of matter packed into a given space. Density does not depend on the amount of matter present; it remains constant regardless of the quantity of the substance.

When comparing the initial and final density of a gummy bear, the change in density can be influenced more by a change in volume rather than a change in mass. As gummy bears are mostly composed of sugar, when soaked in water, they absorb the water and increase in volume while their mass remains relatively constant. Therefore, the final density of the gummy bear decreases due to the increase in volume.

If the gummy bear were soaked in isopropanol (rubbing alcohol) instead of water, the density of the gummy bear would likely change differently. Isopropanol has a lower density (0.79 g/cm³) compared to water (1 g/cm³). The gummy bear would still absorb the isopropanol, causing an increase in volume, but since the isopropanol has a lower density, the change in density might not be as significant as when soaked in water. The specific density change would depend on the extent of isopropanol absorption by the gummy bear.

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Answer:

Electron, proton and neutron

Explanation:

In each and every atom they are consist of electron, proton and neutron.

Answer:

the dependent variable is the material

Explanation:

because we change the material each time to test which is the best insulator.

this came up in my test today, so i can assure you it is correct!

a) The mass of the block of ice is 56.9kg

b) If the worker stops pushing at the end of 4.30 s, The distance the block moves in the next 4.20s is 9.96m

Explanation:

a) The given data are:

F = 76.0 N, t = 5.30 s, V = ?, u = 0, a = ?, d = 10.0 m, μ = 0

We know that:

F = ma

where

F is the force applied to the object

m is its mass

a is the acceleration produced by the force

We need to find the mass of the block so we can find its acceleration.

Using F = ma and substituting the values given, we have:76.0 = ma a = 76.0/m

We know that:

d = ut + 1/2at²

where

d is the distance covered by the object

u is its initial velocity, t is time

a is the acceleration of the object since it has been given that the block starts from rest.

u = 0 => d = 1/2at² = (76/m)(5.30/2)² = 14.0 m

Dividing by d = 10.0

we have:

10/14 = 1/1.4 = m/76m = (1/1.4) × 76 = 54.3 kg

Rounding to one decimal place, the mass of the block is 56.9 kg.

b) When the worker stops pushing the block, the force applied is zero so the acceleration of the block becomes zero too.

From 0 s to 4.30 s, the block has travelled a distance of:

d₁ = ut + 1/2at² = (0)(4.30) + (1/2)(76/m)(4.30)² = 69.5/m m

From 0 s to 5.30 s, the block travelled a distance of d = 10.0 m

Therefore, from 4.30 s to 5.30 s, the block travelled:

d - d₁ = 10.0 - 69.5/m

Substituting the value of m, we get:

d - d₁ = 10 - 69.5/56.9 = 9.96 m

Thus, the distance the block moves in the next 4.20 s is 9.96 m.

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To find the voltage of the combined drops, we can just add the voltage of both drops together.

2(235.15) = 470.3 Volts

Answer:

+7.0 m/s

Explanation:

Let's take rightward as a positive direction.

So in this problem we have:

a = -2.5 m/s^2 acceleration due to the wind (negative because it is leftward)

t = 4 s time interval

v = -3.0 m/s is the final velocity (negative because it is leftward)

We can use the following equation:

v = u + at

Where u is the initial velocity

We want to find u, so if we rearrange the equation we find:

u = v - at = (-3m/s) - (-2.5m/s^2) (4s) = +7.0m/s

and the positive sign means the initial direction was rightward.

A star's location on the main sequence is primarily determined by its mass. The main sequence is a prominent region on the Hertzsprung-Russell (H-R) diagram where the majority of stars reside.

This diagram plots the luminosity (or absolute magnitude) of stars against their surface temperature (or spectral class). Stars on the main sequence are in a stable state of hydrogen fusion, where they convert hydrogen into helium in their cores, releasing energy in the process.

The mass of a star directly influences its position on the main sequence. Stars with higher masses have greater gravitational forces and, therefore, higher core temperatures and pressures. These higher temperatures and pressures enable more efficient hydrogen fusion and result in greater luminosity. Consequently, more massive stars are located at the upper end of the main sequence and are typically hotter and more luminous.

On the other hand, less massive stars have lower core temperatures and pressures, leading to less efficient hydrogen fusion and lower luminosity. These stars are located at the lower end of the main sequence and tend to be cooler and less luminous.

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The velocity of the rock after 35 seconds is -110.2 m/s.

The velocity of the rock is given by the derivative of the height function,

which is v(t) = 20 - 3.72t.

Plugging in t = 35, we get v(35) = 20 - 3.72 * 35 = -110.2 m/s.

Therefore, the velocity of the rock after 35 seconds is -110.2 m/s.

Velocity is an important concept in physics and engineering. It is used to describe the motion of objects in many different situations, such as the motion of planets, the motion of cars, and the motion of molecules.

a is the acceleration

v is the final velocity

v is the initial velocity

t is the time it takes for the velocity to change

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Answer: 74.8m

Explanation:

We have the vector defined by:

r = 101m

θ = 42.2°

When we want to write this as rectangular components, we have that:

x = r*cos(θ)

y = t*sin(θ)

this is because we can construct a triangle rectangle, where the module of the vector is the hypotenuse, the x component is the adjacent cathetus and the y component is the opposite cathetus.

Then, here we have that the x component is

x = 101m*cos(42.2°) = 74.8m

The axial resistance of an axon is calculated using the formula R = ρL/A, where ρ is the resistivity, L is the length, and A is the cross-sectional area. In this case, the axial resistance is 11.28 MΩ.

The resistance along the axon is calculated using the following formula:

R = ρL/A

where:

R is the resistance in ohms

ρ is the resistivity in ohms per meter

L is the length in meters

A is the cross-sectional area in meters squared

In this case, we have:

ρ = 1.6 x 107 Ω.m

L = 0.5 mm = 0.0005 m

A = πr² = π(5 x 10-6)² = 7.854 x 10-13 m²

Therefore, the resistance is:

R = ρL/A = (1.6 x 107 Ω.m)(0.0005 m) / (7.854 x 10-13 m²) = 11.28 MΩ

Therefore, the axial resistance of the axon is 11.28 MΩ.

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The magnitude of the magnetic field at the center of a coil depends on various factors such as the number of turns in the coil, the current flowing through it, and the geometry of the coil.

The magnitude of the magnetic field at the center of a coil can be approximated using the formula for the magnetic field at the center of a circular loop. For an idealized scenario with a circular coil carrying a current I, the magnitude of the magnetic field at the center can be given by:

B = (μ₀ * N * I) / (2 * R)

Where B is the magnetic field magnitude, μ₀ is the permeability of free space (a constant value), N is the number of turns in the coil, I is the current flowing through the coil, and R is the radius of the coil.

This formula demonstrates that the magnetic field at the center of a coil is directly proportional to the number of turns and the current flowing through the coil. It is inversely proportional to the radius of the coil. By adjusting these parameters, the magnitude of the magnetic field at the center of the coil can be controlled.

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Answer:

Explanation:

Mass = 50kg +7kg +4kg =61 kg

Velocity = 3m/s

Momentum = mass × velocity

\(p =61\times 3\\\\p =183MLT^-^1\)

Answer:

Mass= 61 kg. Success to The homework.

The area of the sector of the circle is 11π/12 square feet. The formula is Area of Sector = (θ/2) * r^2.


To find the area of a sector of a circle, you can use the formula:

Area of Sector = (θ/2) * r^2

where θ is the central angle of the sector in radians and r is the radius of the circle.

In this case, the diameter of the circle is given as 2 feet, which means the radius (r) is half of the diameter, so r = 2/2 = 1 foot. The central angle is given as 11π/6 radians.

Plugging in the values into the formula, we have:

Area of Sector = (11π/6)/2 * 1^2

= (11π/12) * 1

= 11π/12 square feet

Therefore, the area of the sector of the circle is 11π/12 square feet.

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Answer:

An unstable form of a chemical element that releases radiation as it breaks down and becomes more stable.

The five points (all from science) to back the second premise up (The universe began to exist) are:

Einstein's theory of General Relativity

Galaxy seeds

Second Law of Thermodynamics

Expanding universe

Radiation echo

What is thermodynamics?

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Answer:

I DONT KNOW WHAT TO DO SORRY

Explanation:

EVEN ME IM NOT SURW

Answer:

750W

Explanation:

40×10= 400N

work done= force × distance

=400 × 75

=30000 J

Power= work done/ time

= 30000 ÷ 40

= 750 W

If the current in a long straight wire is increasing, the current is induced in the circular loop will be generated in the nearby circular loop.

Faraday's Law states that the electromotive force (EMF) induced in a circuit is proportional to the rate of change of magnetic flux passing through it. As the current in the straight wire increases, the magnetic field around it strengthens, and the change in magnetic flux through the circular loop causes an induced current. The direction of this induced current is determined by Lenz's Law, which states that the induced current will flow in such a way as to oppose the change in magnetic flux causing it.

In this case, as the magnetic field due to the straight wire increases, the induced current in the circular loop will flow in a direction that generates a magnetic field opposing the increase in the straight wire's magnetic field. The magnitude of the induced current depends on the rate of change of the magnetic field, the loop's size, shape, and distance from the straight wire, as well as the resistance of the loop's material. If the current in a long straight wire is increasing, the current is induced in the circular loop will be generated in the nearby circular loop.

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Answer:

1.5 N

Explanation:

You've left us to guess what the question is. I will Assume it is what's the force?

Givens

m = 3 kg

vi = 1.5 m/s

vf = 4 m/s

t = 5 seconds

Formula

F = m * (vf - vi)/t

Solution

F = 3 * (4 - 1.5) / 5

F = 1.5 N

The hydrogen transition that represents the absorption of a photon in the UV portion of the electromagnetic spectrum is Option E: n=1 to n=4.

In the hydrogen atom, the energy levels of the electrons are quantized, and transitions between these energy levels result in the emission or absorption of photons. The energy of a photon is directly related to the difference in energy between the initial and final states of the electron.

In this case, the transition from n=1 to n=4 represents the absorption of a photon in the UV portion of the electromagnetic spectrum. When an electron in the hydrogen atom absorbs a photon, it gains energy and jumps from the ground state (n=1) to the higher energy state (n=4). This transition corresponds to the absorption of UV light.

The energy of the photon absorbed is equal to the difference in energy between the n=4 and n=1 levels. The energy difference increases as the electron transitions to higher energy levels, which corresponds to shorter wavelengths in the UV portion of the electromagnetic spectrum.

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The Paschen series is a spectral series of hydrogen-like atoms that is similar to the Balmer series, but with a different value of the principal quantum number.

Specifically, the Paschen series corresponds to transitions between an excited state with principal quantum number n greater than or equal to 3, and the n=3 energy level in hydrogen-like atoms.

Like the Balmer series, the Paschen series also produces a series of spectral lines, which are the result of the emission of electromagnetic radiation as the electrons in the atom transition from higher energy levels to lower energy levels.

However, the wavelengths of the spectral lines in the Paschen series are longer than those in the Balmer series, due to the higher energy levels involved.

Overall, the Paschen series is an important aspect of the study of atomic physics, and provides valuable insights into the behavior of hydrogen-like atoms and their spectral emissions.

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Answer:

1181.63 m

Explanation:

Assume : specific heat for copper = 386 J/kg.k

Determine the height a 300k  cu ball can lift itself after transforming all its thermal energy to work

Total thermal energy of ball =  386J/kg.k * 300 k

                                                = 115800 J

when we convert to potential energy ( work )  applying the law of conservation of energy

11580 J = mgh

11580 = 1 * 9.8 * h       ( note m = 1 because the cu is just 1 unit )

∴ h ( height attained ) = 11580 / 9.8   = 1181.63 m

The answer is ionic bond.

a. The third sphere must be placed between A and B, closer to A.

b.  the third sphere must be placed at 175 cm from the first sphere.

Since

Using Newton's law of universal gravitation, the net force on the first sphere on the third sphere is F = mAmC/x² where x = distance between sphere C and A

Also, the Force of attraction between there second sphere and the third sphere is F' = mBmC/(R - x)² where R = distance between mA and mB and x = distance between mA and mC.

Since the net force must be zero, then

F = F'

mAmC/x² = mBmC/(R - x)²

So, (R - x)²/x² = mB/mC/mAmC

(R - x)²/x² = mB/mA

Substituting the values of mA and mB into the equation, we have

(R - x)²/x² = 7/2

(R - x)²/x² = 3.5

(R - x)/x = √3.5

(R - x)/x = 1.87

R - x = 1.87x

R = x + 1.87x

R = 2.87x

x = R/2.87

x = 0.35R

Since x = 0.35R, the third sphere must be placed between A and B, closer to A.

Since the position of the third sphere is

So, x = 0.35 × 500 cm

x = 175 cm

So, the third sphere must be placed at 175 cm from the first sphere.

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Answer:

it is absorbed or reflected by the atmosphere

Explanation:

In the case when approx 50% only of the solar energy would be directed towards earth and it would be penetrates directly to the surface so the rest or remaining of the radiation would be either absorbed or refected by the atmosphere

So as per the given situation the above represent the answer

hence, the same is to be considered and relevant