2) What did Rutherford discover in his experiment?
a) nucleus
b) electrons
c) neutrons

The elevator does 24,000 Joules of work in lifting a 600 N person over a distance of 40 meters.

To calculate the work done by an elevator in lifting a person, we can use the formula:

Work = Force × Distance × cos(θ)

Where:

Force = 600 N (the weight of the person)

Distance = 40 m (the vertical distance the person is lifted)

θ = 0 degrees (cosine of 0 is 1, indicating the force and distance are in the same direction)

Plugging in the values:

Work = 600 N × 40 m × cos(0°)

= 600 N × 40 m × 1

= 24,000 N·m

= 24,000 J (Joules)

Therefore, the elevator does 24,000 Joules of work in lifting a 600 N person over a distance of 40 meters.

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Answer:  With Hydroelectric power water is artificially stored in a high place, so it can be released and flow to a low place and through a generator. With Tidal energy the movement of water is also used to power a generator, but the flow of water is caused by the changing tides.

Sports teams impact culture nationally as they promote national pride and social cohesion, as shown in Option A, where the sports teams can have a significant impact on culture.

Sports teams can bring together people from different parts of the world to support their country, creating a sense of national pride; they can bring in significant economic benefits to a region, generating revenue through ticket sales, merchandise, and tourism; and they can also help to promote social cohesion within a community.

Hence, sports teams impact culture nationally as they promote national pride and social cohesion, as shown in Option A.

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The question is incomplete, complete question is below

How do sports teams impact culture nationally

A)they promote national pride and cohesion

B)they don't promote national pride and social cohesion

Latitude, height, variances in the heating of land and water, weather patterns, ocean currents, or surface texture are the main factors that affect and determine temperature trends.

Particularly, different parts of the earth's surface have different average surface air temperatures. Latitude, being close to water, and height are the "big three" factors that determine a location's temperature.

A form of control system called a temperature centralized system regulates an object's or an area's temperature automatically. In appliances like conditioners, refrigerators, geysers, etc., we frequently employ temperature control systems where the temperature is automatically changed based on the input parameters.

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A. If you were to travel to a planet that has twice the mass of Earth, Your weight would stay the same.

The weight of an object is a quantity representing the force exerted on a particle or the object by an acceleration field, particularly the gravitational field of the Earth at the surface.

W = mg

where;

The weight of an object depends on mass and acceleration due to gravity.

If you were to travel to a planet that has twice the mass of Earth, the following will be observed;

Thus, If you were to travel to a planet that has twice the mass of Earth, Your weight would stay the same.

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According to the claim made, the electron moved across a potential difference of 2.84 * 10⁻² V.

Each spot in space has an electric field associated with it when there is charge current in any form. The value of E, often known as the electric field strength, electric field intensity, or just the electric field, expresses the direction and intensity of the electromagnetic field.

Given;

Velocity, v = 10 * 10⁴ m/s = 10⁵ m/s

Potential difference, V = ?

Mass of electron = 9.11 * 10⁻³¹ kg

Charge of electron, q = 1.60 * 10⁻¹⁹C

The KE of an electron is the amount of energy in an electric field.

Thus, qV = 1/2mv²

Therefore, V = mv²/2q

Putting Values,

V = 9.11 * 10⁻³¹ * 10⁵ * 10⁵/2 * 1.6 * 10⁻¹⁹

= 9.11 * 10⁻²¹/3.2 * 10⁻¹⁹

V = 2.84 * 10⁻²

Thus, Potential difference is 2.84 * 10⁻² V

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To find the total boundary work, we need to calculate the work done during the isothermal compression and the work done during the isobaric expansion.

Given:

Initial pressure, P1 = 100 kPa

Final pressure, P2 = 1 MPa

= 1000 kPa

Initial temperature, T1 = 23°C

= 23 + 273

= 296 K

Mass of air, m = 9.63 kg

First, let's calculate the work done during the isothermal compression. The work done during an isothermal process can be calculated using the formula:

W1 = nRT ln(V2/V1)

Where:

n = number of moles of gas

R = gas constant

T = temperature in Kelvin

V1 = initial volume

V2 = final volume

To find the number of moles of air, we can use the ideal gas equation:

PV = nRT

Rearranging the equation, we get:

n = PV / RT

Substituting the given values:

n = (P1 * V1) / (R * T1)

Now, let's calculate the initial volume V1. We know that the volume of an ideal gas can be calculated using the formula:

V = (m/M) * R * T

Where:

m = mass of the gas

M = molar mass of the gas

The molar mass of air is approximately 28.97 g/mol.

V1 = (m/M) * R * T1

Substituting the given values:

V1 = (9.63 kg / 28.97 g/mol) * 8.314 J/(mol·K) * 296 K

Now we can calculate the work done during the isothermal compression:

W1 = nRT ln(V2/V1)

Substituting the values calculated above:

W1 = [(P1 * V1) / (R * T1)] * R * T1 * ln(V2/V1)

Next, let's calculate the work done during the isobaric expansion. The work done during an isobaric process is given by:

W2 = P2 * (V2 - V1)

Substituting the given values:

W2 = P2 * (V2 - V1)

Finally, we can calculate the total boundary work by adding the work done during the compression and expansion:

Total boundary work = W1 + W2

Now we can perform the calculations to find the numerical value of the total boundary work.

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Oxygen

hope this helps:)

Answer:

Explanation:

the cells need oxygen for metabolism, which also creates carbon dioxide as a waste product. The red blood cells then pick up the carbon dioxide and transport it back to the lung. There we exhale it when we breathe out. Red blood cells can also pick up or release hydrogen and nitrogen.

Important Formulas:

\(v=\lambda f\)

velocity(measured in m/s) = wavelength(measured in meters) * frequency(measured in hertz)

\(f=\dfrac{1}{T}\)

frequency(measured in hertz) = 1 / period(measured in seconds)

__________________________________________________________

Given:

\(v=362m/s\)

\(T=4.17s\)

\(\lambda=?\)

__________________________________________________________

Finding frequency:

\(f=\dfrac{1}{T}\)

\(f=\dfrac{1}{4.17}\)

\(f=0.24Hz\)

__________________________________________________________

Rearranging formula for velocity to make wavelength the subject:

\(v=\lambda f\)

\(\dfrac{v}{f} =\dfrac{\lambda f}{f}\)

\(\lambda=\dfrac{v}{f}\)

__________________________________________________________

Finding wavelength:

\(\lambda=\dfrac{v}{f}\)

\(\lambda=\dfrac{362}{0.24}\)

__________________________________________________________

\(\boxed{\lambda=1508.33m}\)

Answer:

pay attention in

Explanation:

The increase in temperature that will result if 225.0 g of copper absorbs 5000 J of heat energy is 57.72°C.

The temperature change of a substance can be calculated using the following formula:

Q = m × c × ∆T

Where;

5000 = 225 × 0.385 × ∆T

5000 = 86.63∆T

∆T = 5000/86.63

∆T = 57.72°C

Therefore, the increase in temperature that will result if 225.0 g of copper absorbs 5000 J of heat energy is 57.72°C.

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Answer:true

Explanation:

Answer:

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

\(a = \frac{f}{m} \\ \)

f is the force

m is the mass in kg

From the question

5000 g = 5 kg

We have

\(a = \frac{55}{5} \\ \)

We have the final answer as

Hope this helps you

Answer: The answer is D.

Explanation: Momentum can be defined as mass in motion. All objects have mass so if an object is moving, then it has momentum it has its mass in motion. Momentum depends upon the variables mass and velocity. In terms of an equation, the momentum of an object is equal to the mass of the object times the velocity of the object.

Answer:

825 Joules of energy would be correct if my math is right.

Action and reaction forces comprise the parts of a. a single interaction.

For every action, there is an equal and opposite reaction. According to Newton's third law there is an equal (in size) and opposite (in direction) reaction force for every action force. That means that forces result from interactions.

The force exerted on an object is the action, and the force experienced by the object is the reaction.

Some forces result from contact interactions like frictional, tensional and other forces are results of actions at a distance interaction like gravitational, electrical, magnetic.

It is the physical magnitude that expresses the effort necessary to move the mass of one kilogram with an acceleration of one meter per second squared, this is expressed in units of the international system in Newton.

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The acceleration due to gravity in Chicago is \(9.803 m/s^2\).

Let us assume that the acceleration due to gravity in Chicago is \(g\) \(m/s^2\).

It is given that,

The length of the second pendulum is \(l=0.9933 m\).

It is known that,

The time period of a second pendulum is \(T=2s\).

The time period of a simple pendulum, \(T=2\pi\sqrt{\frac{l}{g}}\).

\(\Rightarrow (2)=2\pi \sqrt{\frac{0.9933}{g}}\)

\(\Rightarrow \frac{2}{2\pi}=\sqrt{\frac{0.9933}{g}}\)

\(\Rightarrow \frac{0.9933}{g}=(\frac{1}{\pi})^2\)

\(\Rightarrow g=0.9933\times(\pi)^2\)

\(\Rightarrow g=9.803 m/s^2\)

Hence, the acceleration due to gravity in Chicago is \(9.803 m/s^2\).

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We can deduce here that the source of the energy transformation that would occur if a heater were added to a circuit would be chemical energy.

A power plant, also known as a power station or generating station, is a facility that generates electrical energy from various sources. It is designed to produce large amounts of electricity to meet the demand of consumers, industries, and other electricity users.

The chemical energy stored in the fuel that is burned at the power plant is converted into electrical energy, which is then converted into thermal energy by the heater. This is an example of energy transformation, which is the process of changing one form of energy into another

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Answer:

the angular speed of the stone at the moment of release is 15.05 rad/s

Explanation:

Given the data in the question;

The point of release ( height ) h = 25.6 m

the time of the fall of the stone will be;

⇒√( 2h/g )

we know that g = 9.81 m/s

so we substitute

t = √( (2 × 25.6 m) / 9.81 m/s )

t = √( 51.2 / 9.81 m/s )

t = √( 5.219164 s )

t = 2.285 s

Now, let v represent velocity at the time of release

them v × t ~ v × 2.285 s is the horizontal distance traveled.

Given that; The horizontal distance of point X from the base of the cliff (directly beneath the point of release) is 34.4 times the radius of the circle.

so

v × 2.285 = 34.4 × radius

Now, if the angular speed is ω then velocity at the time of release will be;

v = radius × ω

hence;

(radius × ω)  × 2.285 = 34.4 × radius

radius cancels each other out and we have;

ω  × 2.285 = 34.4

ω = 34.4 / 2.285

ω = 15.05 rad/s

Therefore, the angular speed of the stone at the moment of release is 15.05 rad/s

By using Hubble's constant H₀, the estimated age of the universe would be 27,269,816,110  years.

As we know that the age of the universe is something near to the time the galaxies needed to reach their current distance:

T = D/V

where T is the time the galaxies needed, D is distance and V is speed.

By using Hubble's law we can use the equation

V = H₀*D

where H₀ is Hubble's constant

By combining these 2 equations, we get

T = D/(H₀*D) = 1/H₀ .............(A)

In conclusion, the age of the universe is something near the inverse of Hubble's constant.

From the question above, we know that:

H₀ = 11 km/s/Mly

By using equation A we get

T = 1/(11 km/s*Mly)

T = (1/11)  s*Mly/km

Convert 1 million light-years to km by (1 ly = 9.461*10^12 km)

T = (1/11) s*Mly/km

T = (1/11)*9.461*10^18 s

T = 8.6009*10^17 s

Convert to years by (1 year = 3.154*10^7 s)

T = 8.6009*10^17 s

T = (8.6009*10^17 s/3.154*10^7 s)* 1 yea

T = 27,269,816,110 years.

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Answer:

Active stretching.

Explanation:

Think about it.

Answer:

Kepler's laws apply: First Law: Planetary orbits are elliptical with the sun at a focus. Second Law: The radius vector from the sun to a planet sweeps equal areas in equal times. Third Law: The ratio of the square of the period of revolution and the cube of the ellipse semimajor axis is the same for all planets.

Answer:

Explanation:

Since work = magnitude of the force times the displacement, then

W = 43.0(5.00) so

W = 215 N*m

To solve this, we must be knowing each and every concept related to fundamental force. Therefore,  215 Nm is the work done on a bookshelf being pulled 5.00 m at an angle of 37.0° from the horizontal.

Nature is governed by four fundamental or universal forces. All stuff in the universe would disintegrate in the absence of these forces. Any pull or push that causes an item to change its physical condition is referred to as force (in terms of motion or deformity).

Mathematically, the formula for work can be given as

work = force × displacement× cos(Θ)

W = F × D × cos(Θ)

force= 43.0 N

Θ=37.0°

displacement=5.00 m

substituting all the given values in the above equation, we get

W =  43.0  × 5.00  × cos(37.0°)

W = 215 Nm

Therefore,  215 Nm is the work done on a bookshelf being pulled 5.00 m at an angle of 37.0° from the horizontal.

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The distribution factor (DF) is used to distribute the load from a beam to its supports or the adjacent beams of the grid. Distribution factor of CC1 = 0.38, Distribution factor of CC2 = 0.38.

The DF of a member is the portion of the load that is transferred to the adjacent member or support. Distribution factor of member CB = 0.25, Distribution factor of member CD = 0.21We are required to calculate the distribution factor for members CC1 and CC2, given they are equal. Distribution of the load on CC1 and CC2. The load acting on member CD = 20 kN. The distribution factor of CD = 0.21. Therefore, the load transferred to member CC1 = 0.21 × 20 kN = 4.2 kNAnd, the load transferred to member CC2 = 0.21 × 20 kN = 4.2 kN. Now, let's distribute the load acting on CB.The load acting on member CB = 30 kN. The distribution factor of CB = 0.25Therefore, the load transferred to member CC1 = 0.25 × 30 kN = 7.5 kN And, the load transferred to member CC2 = 0.25 × 30 kN = 7.5 kN. We know that the loads on CC1 and CC2 are equal. Hence, the distribution factor for members CC1 and CC2 is as follows: Distribution factor of CC1 = (4.2 + 7.5) kN / 30 kN = 0.3833 ≈ 0.38Distribution factor of CC2 = (4.2 + 7.5) kN / 30 kN = 0.3833 ≈ 0.38.

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You are in a bowling alley and you see a bowling ball (of the sort that has no finger holes) and a helium-filled balloon that has the exact same size and shape as the bowling ball. The buoyant force is greater on the helium-filled balloon.

To explain this, let's first understand buoyant force. The buoyant force is the upward force exerted on an object submerged in a fluid, which opposes the weight of the object. It is determined by the weight of the fluid displaced by the object.

In the given scenario, both the bowling ball and the helium-filled balloon have the same size and shape, which means they displace the same volume of air. However, the balloon is lighter due to the helium gas inside. The buoyant force acting on the balloon is greater than its weight, which causes the balloon to float. On the other hand, the bowling ball is much heavier, and the buoyant force acting on it is not enough to counteract its weight, which is why it doesn't float. Therefore, the buoyant force is greater on the helium-filled balloon.

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The motorcyclist needs to use a copper wire with a length of 5.3 cm to achieve a current of 5.6 A when connected to the motorcycle's 12 V battery.

To determine the length of copper wire that the motorcyclist needs to use to achieve a current of 5.6 A,

we need to use the formula:

R = ρl/A

where R is the resistance of the wire, ρ is the resistivity of copper, l is the length of the wire, and A is the cross-sectional area of the wire.

We can rearrange this formula to solve for the length of the wire:

l = RA/ρ

where

R = V/I is the resistance of the wire,

V is the voltage of the battery, and

I is the desired current in the wire.

In this case, the voltage of the battery is 12 V and the desired current is 5.6 A.

The cross-sectional area of the wire can be determined using the formula:

A = π\(r^2\)

where r is the radius of the wire, which is half the diameter.

So, A = π \((0.23/2 mm)^2\) = 4.15 x \(10^{-5} \: m^2\)

The resistivity of copper is 1.68 x \(10^{-8}\) Ωm.

Substituting the values into the formula, we get:

R = V/I = 12 V/5.6 A = 2.14 Ω

l = RA/ρ

I = (2.14 Ω) x (4.15 x \(10^{-5}\)) / (1.68 x \(10^{-8 }\)Ωm)

I = 0.0053 m = 5.3 cm

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A model used to explain the composition and structure of an atom is known as a "atomic model" in physics.

Thus,  Over time, atomic models have undergone numerous modifications in order to better fit experimental evidence.

The Greek atomic theory was not founded on natural observations, measurements, tests, or experiments, despite its historical and philosophical significance.

Atomic model proposed by Dalton was well received. It was consistent with experimental findings and combined the previously understood concepts of the law of conservation of mass, the law of definite proportions, and the law of numerous proportions.

Thus, A model used to explain the composition and structure of an atom is known as a "atomic model" in physics.

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Buoyancy or Buoyant force is the force which acts on the objects that are placed in a fluid. Thus, the correct option is B.

The buoyant force or buoyancy is the upward force that is exerted on an object which is fully or partially immersed in a fluid. This upward force is also called Up-thrust. Due to buoyant force, a body that is submerged in a fluid appears to lose its weight in the fluid, i.e. appears to be lighter. The factors which affect buoyant force are volume of the fluid displaced and the volume of the body that is submerged in fluid.

An example where buoyant force can be observed is a ship which is floating in the middle of the sea, an anchor that sinks when thrown in the water, and a fish which is hovering in the middle of the waterbody.

Therefore, the correct option is B.

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The specific gravity of water at exactly 4°C is 1 and the density of water depends on the temperature of water.

A substance's specific gravity is determined by dividing its material's density by that of a standard liquid. The reference liquid is generally water. As a result, the specific gravity can also be explained as the relation of the material's density to water's density.

A common tool for determining a liquid's specific gravity is the hydrometer. A hydrometer is a floating bulb with measurement markers affixed to a stalk. The relative density of the two liquids can be calculated by measuring how much of the stalk is immersed in the target liquid in comparison to a reference liquid.

Another tool for determining a liquid's density while accounting for volume is a pycnometer. The container is made of glass, and the tight-fitting lid lets any extra liquid out. The relative density of the two fluids can be determined by comparing the overall weight of the pycnometer when it is full to the weight when it is full of a known fluid.

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