Which would you choose to measure a high value of
current e.g 2000A
The bar primary type current transformer or the wound primary type
and why?

The resistance of the resistor r so maximum current is 40.9 mA.

A Resistor and inductor are connected to a 9.0 v battery by a switch as shown. the moment the switch is closed, current flows through the circuit. the resistor has a resistance of r.

Calculation:-

Maximum current imax = V/R

= 9/220

= 40.9 mA.

Resistors are used for many purposes. a few examples consist of restricting electric powered cutting-edge, voltage division, warmth generation, matching and loading circuits, benefit manage, and setting time constants. they may be commercially available with resistance values over various extra than nine orders of magnitude.

A circuit is a entire circular direction that energy flows via. A easy circuit includes a modern supply, conductors and a load. The time period circuit may be utilized in a preferred sense to consult any fixed route that energy, records or a sign can travel via.

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To achieve an acceleration of 9.8 m/s², you should swing the 3.00 kg stone at a speed of approximately 2.71 m/s.

The centripetal acceleration formula, a = (v² / r), relates the acceleration (a) to the velocity (v) and the radius (r) of the circular path. Rearranging the formula to solve for v gives v = sqrt(a * r). In this case, the acceleration is given as 9.8 m/s² and the radius is half the length of the rope, which is 0.75 m. Substituting these values into the formula, we get v = sqrt(9.8 m/s² * 0.75 m) ≈ 2.71 m/s. Therefore, to achieve an acceleration of 9.8 m/s², you should swing the stone at a speed of approximately 2.71 m/s.

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The total magnetic field at the center point between the two squares is \(2 *10^{(-4)}\) Tesla.

Let's assume the current passing through each square of wire is I = 15 mA = \(15 *10^{(-3)} A\).

The magnetic field produced by a square wire at its center can be calculated using the formula for the magnetic field of a long straight wire:

B = (μ₀ * I) / (2 * π * r)

Where:

B is the magnetic field

μ₀ is the permeability of free space\((4\pi × 10^{(-7)} T.m/A)\)

I is the current

r is the distance from the wire

For each square wire, the distance from its center to the center point between the two squares is 1.5 cm = 0.015 m.

Calculating the magnetic field produced by each square wire:

B1 =\((4\pi * 10^{(-7)} T.m/A * 15 * 10^{(-3)} A) / (2 *\pi * 0.015 m)\)

B1 =\(10^{(-4)} T\)

Since the current passes through both squares in a counterclockwise direction, the magnetic fields produced by both squares will have the same magnitude and direction.

Therefore, the total magnetic field at the center point between the two squares is:

B_total = B1 + B1

B_total =\(2 * 10^{(-4)} T\)

B_total = \(2 *10^{(-4)} T\)

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--The complete Question is, Two squares of wire, each with a side length of 4 cm, are placed side by side on a table with a distance of 3 cm between the closest sides of the two squares. A 15 mA current passes counterclockwise through both squares. What is the total magnetic field at the center point between the two squares?--

Acceleration is a physical quantity that describes the rate of change in velocity of an object over time. It is a vector quantity, which means it has both magnitude and direction, and is measured in units of meters per second squared (m/s²).

Describe Acceleration

When an object is accelerating, its velocity is changing, either by increasing or decreasing in speed or changing direction. The magnitude of the acceleration depends on the force applied to the object, which can come from a variety of sources such as gravity, friction, or electromagnetism.

The formula for acceleration is:

a = (v2 - v1) / t

where a is the acceleration, v2 is the final velocity, v1 is the initial velocity, and t is the time it takes to go from v1 to v2.

If an object is moving in a straight line with a constant acceleration, its velocity can be calculated by the following equation:

v = v0 + at

where v is the final velocity, v0 is the initial velocity, a is the acceleration, and t is the time.

Acceleration is a fundamental concept in physics and is used to describe the motion of objects in a wide variety of situations, including free-fall, projectile motion, circular motion, and the behavior of fluids. It is also essential in engineering and design, where it is used to calculate the performance and efficiency of machines and vehicles.

(a) To find the average speed of Leslie, we can use the formula:

average speed = total distance / total time

Leslie runs to the store 5 km away in 30 minutes (0.5 hours), so the total distance is 5 km and the total time is 0.5 hours.

average speed = 5 km / 0.5 hours = 10 km/h

Therefore, the average speed of Leslie is 10 km/h when she runs to the store 5 km away in 30 minutes.

(b) To convert km/h to m/s, we can use the conversion factor:

1 km/h = 0.2778 m/s

So, the speed of Leslie in m/s is:

10 km/h × 0.2778 m/s/km/h = 2.78 m/s

Therefore, Leslie's speed is 2.78 m/s.

(a) To calculate the acceleration of the ball, we can use the formula:

acceleration = (final velocity - initial velocity) / time

The ball starts from rest, so the initial velocity is 0 m/s. After 4 seconds, it gains a speed of 30 m/s.

acceleration = (30 m/s - 0 m/s) / 4 s = 7.5 m/s²

Therefore, the acceleration of the ball is 7.5 m/s².

(b) If the ball rolls at 60 m/s, we can use the same formula to find the acceleration:

acceleration = (60 m/s - 0 m/s) / 4 s = 15 m/s²

Therefore, the acceleration of the ball would be 15 m/s² if it rolls at 60 m/s.

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Answer:

12.3 m/s

Explanation:

The Doppler equation describes how sound frequency depends on relative velocities:

fr = fs (c + vr)/(c + vs),

where fr is the frequency heard by the receiver,

fs is the frequency emitted at the source,

c is the speed of sound,

vr is the velocity of the receiver,

and vs is the velocity of the source.

Note: vr is positive if the receiver is moving towards the source, negative if away.

Conversely, vs is positive if the receiver is moving away from the source, and negative if towards.

Given:

fs = 894 Hz

fr = 926 Hz

c = 343 m/s

vs = 0 m/s

Find: vr

926 = 894 (343 + vr) / (343 + 0)

vr = 12.3

The speed of the car is 12.3 m/s.

The R-7 rocket has an improvement such that it could launch a satellite into orbit around the earth. Option C.

The R-7 rocket was a significant improvement over the V-2 rocket in several ways. These include:

These attributes enable the R-7 rocket to be able to launch satellites into orbit.

In summary, the R-7 rocket was a significant improvement over the V-2 rocket in terms of payload capacity, range, multi-stage design, ICBM capability, and modular design.

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Answer:

628 J  

Explanation:

Force of friction x distance = work

force of friction = normal force * coeff

                          =  ( 80 kg * 9.81 m/s^2) * .4 = 313.92 N

3139.2N  * 2 m  = 627.84  J  = ~ 628 J

The pulley must rotate at a speed of approximately 1.99 radians per second for the cable car to make the trip in 12 minutes.

To determine the rotational speed of the pulley, we need to calculate the angular velocity (ω) in radians per second.

Distance traveled by the cable car = 6.8 km

Time taken to make the trip = 12 minutes

First, let's convert the distance to meters:

Distance = 6.8 km = 6,800 meters

Next, let's convert the time to seconds:

Time = 12 minutes = 12 * 60 seconds = 720 seconds

The linear speed (v) of the cable car can be calculated using the formula:

v = distance / time

v = 6,800 meters / 720 seconds

v ≈ 9.44 m/s

The linear speed of the cable car is equal to the circumference of the pulley multiplied by its angular velocity:

v = 2πrω

where r is the radius of the pulley (half of its diameter).

Given the diameter of the pulley is 3.0 m, the radius is:

r = 3.0 m / 2 = 1.5 m

Substituting the values into the equation:

9.44 m/s = 2π(1.5 m)ω

To solve for ω, divide both sides by 2π(1.5 m):

ω = 9.44 m/s / (2π(1.5 m))

ω ≈ 1.99 rad/s

Therefore, the pulley must rotate at a speed of approximately 1.99 radians per second for the cable car to make the trip in 12 minutes.

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a) The capacitance of the container can be determined using the formula C = ε₀A/d, where ε₀ is the vacuum permittivity, A is the area of the plates, and d is the distance between the plates. In this case, the area A is given by the square of the side length, which is 40 cm. The distance d is initially 5 mm.

b) The electrostatic energy stored by the capacitor can be calculated using the formula U = (1/2)CV², where U is the energy, C is the capacitance, and V is the voltage across the capacitor. In this case, the voltage V can be calculated by dividing the charge Q by the capacitance C.

c) The electrostatic force acting on the metal walls can be determined using the formula F = (1/2)CV²/d, where F is the force, C is the capacitance, V is the voltage, and d is the distance between the plates. The force is exerted in the direction of the movable plate.

a) The capacitance of the container is a measure of its ability to store electric charge. It depends on the geometry of the container and the dielectric constant of the material between the plates. In this case, since the container consists of two parallel square plates, the capacitance can be calculated using the formula C = ε₀A/d.

b) The electrostatic energy stored by the capacitor is the energy associated with the electric field between the plates. It is given by the formula U = (1/2)CV², where C is the capacitance and V is the voltage across the capacitor. The energy stored increases as the capacitance and voltage increase.

c) The electrostatic force acting on the metal walls is exerted due to the presence of the electric field between the plates. It can be calculated using the formula F = (1/2)CV²/d, where C is the capacitance, V is the voltage, and d is the distance between the plates. The force is exerted in the direction of the movable plate and increases with increasing capacitance, voltage, and decreasing plate separation.

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Answer:

a:s

b:s

c:r

d: r

e: s

f:  s

g: s

Explanation:

The equilibrium constant for reaction 6 a (g) 3 b (g) ⇌ 9 c (g) is \(Kp^{3}\) .

Equilibrium is a state in which the forward and backward reactions of a chemical system occur at the same rate. This means that the concentration of reactants and products remains constant over time. The equilibrium constant, Kp, is a measure of the relative concentrations of reactants and products at equilibrium.

Equation 2 a (g) b (g) ⇌ 3 c (g) represents the reaction of two molecules of a (g) with one molecule of b (g) to form three molecules of c (g). The equilibrium constant, Kp, is a measure of the relative concentrations of a (g), b (g), and c (g) at equilibrium.

In reaction 6 a (g) 3 b (g) ⇌ 9 c (g), the ratio of the reactants and products is different from the previous reaction. Therefore, the equilibrium constant for this reaction will also be different from the previous reaction.

To determine the equilibrium constant for this reaction, we can use the relationship between the initial concentrations of the reactants and products and the equilibrium concentrations of the reactants and products.

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frequency = velocity divided by wavelength

Ultraviolet (UV) radiation lies between wavelengths of about 400 nanometres and 10 nanometres, corresponding to frequencies of 7.5 × 1014 Hz to 3 × 1016 Hz.

Answer:

1800 j or 1.8 kj

Explanation:

Energy used = power (measured in watts) multiplied by time (measured by seconds)

1 minute is 60 seconds

30 multiplied by 60 is 1800

Answer:

1800 joule

Explanation:

Power (P) = 30W

Time (T) = 1 min =60 sec

P =(W/T)

30 = W / 60

W = 1800 joule

We know that Energy Is equivalent to Work done. So Energy used is 1800 joule.

It would cost $0.192 to operate a 100 W light bulb for 24 hours if electrical energy costs $0.080 per kW.h.

First, we need to convert the power of the light bulb from watts (W) to kilowatts (kW), since the electrical energy cost is given in dollars per kilowatt-hour (kW.h).

100 W is equal to 0.1 kW (since 1 kW = 1000 W).

The energy consumed by the light bulb in 24 hours can be calculated using the formula:

Energy consumed = Power x Time

where power is in kW and time is in hours. So, for a 100 W light bulb running for 24 hours, the energy consumed is:

Energy consumed = 0.1 kW x 24 hours = 2.4 kW.h

The cost of this energy can be calculated by multiplying the energy consumed by the cost per kW.h:

Cost = Energy consumed x Cost per kW.h

Plugging in the values, we get:

Cost = 2.4 kW.h x $0.080/kW.h = $0.192

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The equivalent measurement of 11.5 milliamperes is 11.5 x 10⁻³ amperes.

The rate of flow of charge per unit cross - sectional area is called electric current. Mathematically -

i = dq/dt

From this -

dq = i dt

∫dq = ∫i dt

Q = it

Current is measured in amperes and is a Tensor quantity.

Given is a circuit that measured a current of 11.5 milli amperes.

Now, the current in milli amperes is used to give the measurement of small amount of current. One milliampere of current is equivalent to -

1 mA = (1/1000) A = 10 ⁻³ A

So, in order to calculate the total current in amperes, we will multiply 11.5 milliamperes by 10 ⁻³ as follows -

11.5 milliamperes [mA] = 11.5 x 10⁻³ amperes[A]

Therefore, the equivalent measurement of 11.5 milliamperes is 11.5 x 10⁻³ amperes.

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Answer:15 cm

Explanation: u had 10cm. them u had another 5cm

Answer:

NO

Explanation:

if it has no acceleration then it's not moving

Answer:

Yes when the velocity is constant then the acceleration is said to be zero. Thus an object with 0 acceleration can be in motion.

Let me give you an example to make you more clear

Example:

When  a car is  traveling at a constant 90 km/h in a straight line has nonzero velocity and zero acceleration.

Explanation:

Veins carry deoxygenated blood from different parts of the body to our heart. ... Since a larger volume of blood is collected in the right auricle than that of the left auricle, right auricle is larger than the left auricle.

The temperature in Fahrenheit is 67.73 degrees Fahrenheit

(293K − 273.15) × 9/5 + 32 = 67.73°F

Typically, 67.73°F is not considered sweater weather. However, you can dress in a sweater in this temperature if you typically feel cold. If you want to create a fashionable image but are worried about perspiring, wrap the sweater over your shoulders.

Water freezes at 32 degrees Fahrenheit and boils at 212 degrees Fahrenheit on the Fahrenheit scale, which is used to measure temperature. It is denoted by the °F sign.

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1.3 m/s is the average speed of runner. Option D is the correct answer.

The total distance covered by the runner in one lap is equal to the distance around the two semicircles plus the distance along the two parallel lines. The distance around one semicircle is πr = π(49 m) and since there are two semicircles, the total distance around the semicircles is 2π(49 m). The distance along each parallel line is 96 m, and since there are two parallel lines, the total distance along the parallel lines is 2(96 m). Therefore, the total distance covered by the runner in one lap is:

Total distance = 2π(49 m) + 2(96 m) = 2π(49 m + 48 m) = 2π(97 m)

The time taken by the runner to complete one lap is given as 100 seconds. Therefore, her average speed is:

Average speed = Total distance / Time taken = [2π(97 m)] / (100 s) = 1.93 m/s

Rounding to two significant figures, the average speed of the runner is 1.9 m/s, which corresponds to option (D) 1.3 m/s.

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The name of the gas that is released into the test tube is Oxygen and the test is the glowing splint test.

The Elodea plant releases oxygen when sunlight is present as it undergoes the process of photosynthesis, converting carbon dioxide and water into glucose and oxygen with the help of energy from sunlight.

You can determine whether oxygen is present by performing the glowing splint test. First, you need to light a wooden splint and ensure that it is glowing but not in flames. Carefully collect the gas emitted from the Elodea plant in a suitable container such as a test tube. Afterward, swiftly insert the still-glowing splint into the collected gas' container or test tube. If the gas comprises mainly oxygen, the glowing splint will reignite and burn more intensely than before, indicating the existence of oxygen.

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The full question is:

A test tube is filled with water and a green plant called Elodea. When the plant is exposed to sunlight, it begins to produce bubbles.

Name the gas that is released into the test tube and state how we test for the gas released ​.

Given,

The mass of the box, m=35.0 kg

The height to which the box was lifted, h=1.75 m

Potential energy is the energy possessed by an object due to its position.

The gravitational potential energy gained by the box is,

Where g is the acceleration due to gravity.

On substituting the known values,

Thus the gravitational potential energy gained by the box is 600.25 J

Answer:

your mama

Explanation:

because i said so

Answer:

1164m

Explanation:

speed=distance/time, therefore Distance=speed*time.

Now that we have our equation, we plug in the variables, as we do not need to convert our units.

12*97= 1164 m

Answer:

unforturnitly

Explanation:

step unstepable

Answer:

An object is moving across a surface, but it does not gain or lose speed, the object's net force is zero.

Explanation: The net force means the vector sum of all the forces acting on an object

Answer:

well its not C

Explanation:

15462 rounded off to three significant figures is 15500.

Significant figures are digits that are meaningful with respect to the precision of a measurement.

According to this question, the breakdown of the given number is as follows:

However, if rounded off to three significant figures (3.s.f), the number becomes;

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Answer:

Acceleration, a = 0.04 m/s²

Explanation:

Given the following data;

Force = 60N

Mass = 1500kg

Force is given by the multiplication of mass and acceleration.

Mathematically, Force is;

\( F = ma\)

Where;

F represents force.

m represents the mass of an object.

a represents acceleration.

Making acceleration (a) the subject, we have;

\(Acceleration (a) = \frac{F}{m}\)

Substituting into the equation;

\(Acceleration (a) = \frac{60}{1500}\)

Acceleration, a = 0.04 m/s²