loop coincides with the wire. Calculate the magnitude of the force exerted on the loop

Answer:

Se necesita la información de las siguientes variables:

(i) Fuerza normal entre los pies y la superficie.

(ii) Masa del atleta de halterofilia.

(iii) Masa de la barra de pesas.

(iv) Aceleración gravitacional.

(v) Fuerza normal entre la barra de pesas y la superficie.

(vi) Aceleración neta del centro de gravedad del sistema.

Explanation:

Sea el conjunto del atleta de halterofilia y la barra de pesas el sistema físico a estudiar. El fenómeno de levantamiento puede modelarse como traslación pura. Por las leyes de Newton tenemos que se necesita las siguientes variables para determinar la magnitud de la fuerza para levantarla (fuerza normal entre la mano y la barra de pesas) se requiere las siguientes variables:

(i) Fuerza normal entre los pies y la superficie.

(ii) Masa del atleta de halterofilia.

(iii) Masa de la barra de pesas.

(iv) Aceleración gravitacional.

(v) Fuerza normal entre la barra de pesas y la superficie.

(vi) Aceleración neta del centro de gravedad del sistema.

Answer:A::C

Solution :

ΔT=

1

2

TαΔθ

rArr Δt=

ΔT

T1t

But T′≈T

∴Δt=

1

2

αΔθ(t)

=

1

2

×0.000012×20×24×3600

=10.37s

At higher temperture, length of pendulum clock will be more. So, time period will be more and it will lose the time.

Explanation:

Answer:

energy that is stagnant and cannot be changed

Answer:

Potential energy is a form of mechanical energy in which an object is at rest or it's not moving

The force between a pair of cars in a train undergoing constant acceleration is much more significant compared to the forces between other cars in the same train.

The hypothesis on how the force between a pair of cars in a train undergoing constant acceleration compares to the forces between other cars in the same train is detailed below.

As the cars in a train undergo constant acceleration, the force between a pair of cars is more significant than the forces between other cars in the same train. This is due to the fact that as the acceleration increases, the force between a pair of cars increases because the car at the back is pushed forward while the car in front is pulling backward, and as a result, there is an increase in the force acting between the two cars.

                                    However, the forces between other cars in the same train are not as significant as the force between a pair of cars because there is no direct contact between them, and hence the force is much less. The greater the acceleration, the greater the force acting between a pair of cars in the train, while the force acting between other cars remains negligible.

Therefore, the force between a pair of cars in a train undergoing constant acceleration is much more significant compared to the forces between other cars in the same train.

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Answer:

1. It will never run out

2. It’s better for the eviroment

Explanation:

1. Coal is not a renewable source and take along time for it to form so it will soon run out

2. Burning coal releases fossil fums into the air affecting the ozone layer but using solar power dose not release anything into the air

Answer:

Renewable energy works as clean sources of energy, and don't make as much of a detrimental impact on the environment as non-renewable energy. Air pollutants are a product of some non-renewable sources, and it negatively affects the atmosphere, humans, animals, and oceans.

Also, renewable sources won't run out, unlike other sources, as they are finite and will not last forever.

I hope this helped!

The magnitude of the average emf induced N= 220 in the coil is 4.10347 X 10⁻⁴ v.

Assume ,

N = 220

Area = 13 . 2 cm²

t = 4. 60 x 10⁻² sec

B = 6. 50 X 10⁻⁵ T

( a )

∅initial = NBA cosθ

=220 X 6 . 50 x 10⁻⁵ x 13 . 2 x 10⁻⁴x cosθ

1.8876X 10⁻⁵  T.m²

∅After= NBAcosθ

=220 X 6.50 x 10⁻⁵ x 13.2x 10⁻⁴x cob 90

( b )

∈=|-Δ∅B/Δt|

=1.8876 * 10⁻⁵/4. 60 x 10⁻²

=4.10347 X 10⁻⁴ v

An attribute of a mathematical object that determines whether it is bigger or smaller than other objects of the same kind is its magnitude or size. Formally speaking, an object's magnitude is the visible outcome of the class of objects it belongs to's ordered results.

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Answer:

an object traveling 80 meters in 2 sec. is 160

This sound is a combination of three different tones, which can be described as a bright, high-pitched sound. As the frequency increases, the tone becomes higher and more intense.

Sound is a form of energy that is produced when an object vibrates. It is transmitted through the air as waves, which are then detected by our ears. Sound is made up of different frequencies, from low bass tones to high-pitched squeaks. Sound waves can travel through solids, liquids, and gases, and can be heard over long distances. We use sound for communication, music, and entertainment, as well as for warning signals and alarms. Different materials can be used to absorb, reflect, or dampen sound waves, allowing us to better control the sound in our environment. Sound is an essential part of our lives, and is an important factor in how we interact with the world around us.

The 400 Hz tone gives the sound a foundation, while the 1600 Hz and 2400 Hz tones give it an extra layer of brightness.

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Given the resistance of the copper wire, length of the wire, and area of cross-section, we can calculate the resistivity of copper by the following formula.ρ = RA/L, .

Where: R is the resistance of the copper wireA is the area of cross-section of the copper wireL is the length of the copper wireSubstituting the given values, we haveρ = (2×10-2 ohms)(1.7×10-6 m2)/(2 m)ρ = 1.7×10-8 ohm-m.

Therefore, the resistivity of copper is 1.7×10-8 ohm-m. Given the resistance of the copper wire, length of the wire, and area of cross-section, we can calculate the resistivity of copper by the following formula.ρ = RA/L, .Where: R is the resistance of the copper wireA is the area of cross section of the copper wireL is the length of the copper wire .

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Answer:

iiiiiiiiiiiiii8iiiiiiiiiiiii

Answer:

i think its 210

Explanation:

Gaseous substances have the highest thermal energy, followed by liquids and then solids under the same other conditions.

The total thermal energy of a substance is determined by its temperature, atomic composition, and physical condition. More thermal energy results from more atoms and a higher temperature.

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Answer:

The equivalent resistance of the parallel circuit would be 20 Ω

Explanation:

To calculate the resistance of resistors connected in parallel, the formula to be used is

1/R = 1/R₁ + R₂ + R₃ + R₄...

1/R = 1/120 + 1/60 + 1/40

1/R = (1 + 2 + 3)/120

1/R = 6/120

1/R = 1/20 Ω

This can be rewritten or cross-multiplied to be

R × 1 = 20 × 1

R = 20 Ω

The equivalent resistance (R) would then be 20 Ω

At constant speed of 48 km/h should he drive to arrive just in time.

A thing is said to be moving at a constant speed when it covers the same distance in the same amount of time. When moving at a constant speed, an object covers a predetermined distance in the same amount of time. S = dt is a formula that can be used to express the speed.

Let distance be x

and time which he will arrive at right time be t

We know that speed = distance/time

so,

40 = x/t+1

x = 40(t+1)

and

60 = x/t-1

x = 60(t-1)

As x is same in both case lets cancel it out

60(t-1) = 40(t+1)

60t -60 = 40t +40

60t - 40t = 40 +60

20t = 100

t = 100/20

t = 5 hours

Now for distance

x = 40(5+1)

x = 40(6)

x = 240 km

Constant speed =  240/5

                           = 48 km/h

Thus, at constant speed of 48 km/h should he drive to arrive just in time.

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Answer:

here's the answers!

Explanation:

A mover carries a box up a flight of stairs.

A mover carries a box across a room.

A weightlifter lifts a barbell off the ground.

hope it helps u!

Answer:

A, D, E

Explanation:

Did it

This motion of the balloon is an example of buoyancy, which is the upward force exerted by a fluid on an object immersed in it.

When the balloon is neutrally buoyant, it means that the weight of the balloon and the weights attached to it is equal to the weight of the water displaced by the balloon.

If you push the balloon down to a greater depth and then release it, the balloon will rise back up to its original position.

This is because the balloon is still partially inflated and contains air, which is less dense than water. When you push the balloon down, the water pressure compresses the air in the balloon, causing it to become smaller in size.

When you release the balloon, the compressed air expands and pushes the balloon upwards towards the surface of the water.

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When you change the thickness of the wire in a circuit, option B. the resistance (R) and current (I) will also change, but the voltage (V) will remain constant.

The resistance of a wire is directly proportional to its length and inversely proportional to its cross-sectional area (thickness). As the thickness of the wire changes, the cross-sectional area changes, which in turn affects the resistance. Thicker wires have a larger cross-sectional area, resulting in lower resistance, while thinner wires have a smaller cross-sectional area, resulting in higher resistance. Therefore, changing the thickness of the wire will cause a change in resistance.

According to Ohm's Law (V = IR), the voltage (V) in a circuit is equal to the product of the current (I) and the resistance (R). If the voltage is kept constant, and the resistance changes due to the thickness of the wire, the current will also change to maintain the relationship defined by Ohm's Law. When the resistance increases, the current decreases, and vice versa.

However, it's important to note that changing the thickness of the wire will not directly affect the voltage. The voltage in a circuit is determined by the power source or the potential difference applied across the circuit and is independent of the wire thickness. As long as the voltage source remains constant, the voltage across the circuit will remain constant regardless of the wire thickness. Therefore, the correct answer is option B.

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A fission reaction requires three main components to be sustainable: a sufficient amount of fissile material, a moderator to control the reaction, and a method of removing heat generated during the reaction.

1. Fissile material: To sustain a fission reaction, there needs to be a sufficient amount of fissile material, such as uranium-235 or plutonium-239. These materials have nuclei that are more likely to split when struck by a neutron, releasing energy and more neutrons in the process.

The critical mass is the minimum amount of fissile material required to maintain a self-sustained chain reaction.

2. Moderator: A moderator is a substance that slows down the neutrons released during fission. This is crucial for sustaining the reaction, as slower neutrons are more likely to be captured by fissile material and induce further fission events. Common moderators include water, heavy water, and graphite.

3. Heat removal: During a fission reaction, a large amount of heat is generated due to the release of energy. In order to maintain a sustainable reaction, it's necessary to remove this heat, typically by transferring it to a coolant, such as water or gas.

The coolant circulates through the reactor core, absorbing heat, and then transfers the heat to a heat exchanger or directly to a steam generator for power production.

In summary, a sustainable fission reaction requires a sufficient amount of fissile material to maintain a chain reaction, a moderator to control the reaction by slowing down neutrons, and an effective method of removing heat generated during the reaction.

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Answer:

5824 yards^2

Explanation:

area = length x width

area = 112 x 52

area = 5824

Answer:

5824 squared yards

Explanation:

Explanation:

CON EL TEOREMA DE PITÁGORAS

v = \(\sqrt{(12 km/h)^{2} + (25 km/h)^{2}}\) = 27.7 km/h

Answer:

Electrolytic manganese dioxide (EMD) is used in zinc-carbon batteries together with zinc chloride and ammonium chloride. EMD is commonly used in zinc manganese dioxide rechargeable alkaline (Zn RAM) cells also. For these applications, purity is extremely important.

Explanation:

hope this helps...

The experimental value of element K, we can rearrange the equation to solve for Z = 92.7 eV / K

To identify the element based on the energy of the K₂ X-ray, we need to use the Moseley's law, which states that the square root of the X-ray energy is proportional to the atomic number (Z) of the element.

Mathematically, the relationship can be expressed as:

√(E) = K * Z

Where E is the energy of the X-ray (in electron volts, eV), Z is the atomic number of the element, and K is a proportionality constant.

Given that the energy of the K₂ X-ray is 8585 eV, we can calculate the square root of the energy:

√(8585 eV) = 92.7 eV

Therefore, we have:

92.7 eV = K * Z

To determine the value of K, we need to refer to experimental data or tables that provide the values of K for different elements. Using the experimental value of K, we can rearrange the equation to solve for Z:

Z = 92.7 eV / K

Without the specific value of K, we cannot determine the exact atomic number or element corresponding to the given energy of the K₂ X-ray (8585 eV).

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Answer:

I think its dense and solid and located near a star.

Explanation:

Hope this helps, good luck.

Due to Friction, Air resistance and Weight of the ball the predicted force of tension different than the actual force of tension

The predicted force of tension is different than the actual force of tension because of various factors such as friction, air resistance, and the weight of the ball. When the experiment is conducted, these factors affect the motion of the ball, resulting in a difference between the predicted and actual force of tension. The force of tension is the force acting on an object that is attached to a string or rope, and it is directed towards the center of the circular path.

In the case of the vertical circle, the force of tension is the force that keeps the ball moving in a circular path. To determine the force of tension, the student uses the following equation:

Ft = mv2/r + mg

where, Ft = force of tension, m = mass of the ball, v = tangential speed of the ball, r = length of the string, g = acceleration due to gravity

When the student measures the actual force of tension using a force probe, the value obtained may be different from the predicted value due to the following factors:

1. Friction:- Friction is the force that opposes the motion of the ball. When the ball moves in a circular path, there is a force of friction acting on the ball. The force of friction depends on the type of surface and the mass of the ball.

2. Air resistance:- Air resistance is the force that opposes the motion of the ball due to the air. As the ball moves through the air, it experiences a force of air resistance. The force of air resistance depends on the size, shape, and speed of the ball.

3. Weight of the ball:- The weight of the ball is the force due to gravity acting on the ball. When the ball moves in a circular path, there is a force of weight acting on the ball. The force of weight depends on the mass of the ball and the acceleration due to gravity.

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The S.I. unit of E is NC^-1 and that of B is NA^-1 m^-1, then unit of E/B is A m/C (ampere meter per coulomb). This unit represents the ratio between the electric field and the magnetic field, indicating the strength and direction of the electromagnetic field.

The SI unit of electric field (E) is NC^(-1) (newton per coulomb) and the SI unit of magnetic field (B) is NA^(-1) m^(-1) (tesla). To determine the unit of E/B, we need to divide the unit of E by the unit of B.

Dividing the unit of E (NC^(-1)) by the unit of B (NA^(-1) m^(-1)), we can simplify the expression:

E/B = (NC^(-1))/(NA^(-1) m^(-1))

To simplify this expression, we can cancel out the common units in the numerator and denominator:

E/B = (N/C)/(N/(A m))

Now, let's simplify further by dividing the numerator and denominator:

E/B = (N/C) * (A m/N)

Canceling out the common units:

E/B = (A m)/(C)

Therefore, the unit of E/B is A m/C (ampere meter per coulomb).

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c] Electrons

Electron gets transferred