The component of the external magnetic field along the central axis of a 50-turn coil of radius 5.0 cm increases from 0 to 1.2 T in 5.0 s. (A) If the resistance of the coil is 3.2 ohms, what is the magnitude of the induced current in the coil? (B) What is the direction of the current if the axial component of the field points away from the viewer?

Answer:

Explanation:

Q1) d) A is not correct; R is correct (sort of) but is not the reason for A.

A vector may be resolved into an infinite number of components.

Breaking a projectile motion into the vertical and horizontal components is the EASIEST way to solve it because acceleration can be assumed to be constant in both directions. Zero for horizontal and g(ravity) in the vertical. However it is not the ONLY way to do it. Other ways are much more complex.

Q2) a) Both A and R are correct; R is the correct explanation of A  (sort of)

A is correct. Speed is constant in uniform circular motion.

R is correct if you call CENTRIPETAL acceleration constant. It is only constant in magnitude. The direction is always changing as the vector always points toward the center of rotation.

Answer: The displacement is 1 block.

Explanation:

Let's define:

The right is the positive side.

The left is the negative side.

Then if you start at position A, and you walk N blocks to the right, the new position is:

A + N

And if you start at position A, and you walk M blocks to the left, the new position is:

A - M.

In this case, we know that Kayla starts at -3 and she walks 5 blocks to the right.

Then her new position is:

-3 + 5 = 2

Now she walks 3 blocks to the left, then her new position is:

2 - 3 = -1

The displacement will be equal to the difference between the final position (-1) and the initial position (-2)

Then the displacement is:

D = -1 - (-2) = -1 +2 = 1

The displacement is 1 block.

Vector multiplied by constant (scalar number),the new vector

becomes k |a|. If k> 0, the same direction, k <0, the opposite direction

If we multiply vector A by 2 then the length becomes 2 times vector A and in the same direction

first point (-1,1)

end point after multiplied: 2(-1,1) ⇒(-2,2)

For the following are four electrical components:

a. For components A and B, both of which obey Ohm's law, the current-voltage characteristics would be a straight line passing through the origin. The slope of the line for component B would be steeper than that of component A, indicating higher resistance.

b. The shape of the characteristic for component C, the filament lamp, can be explained by its construction. A filament lamp consists of a filament made of a resistive material, typically tungsten, which heats up and emits light when an electric current passes through it.

c. The component chosen for D, which does not obey Ohm's law, could be a diode. A diode is a two-terminal electronic component that allows the current to flow in only one direction.

For the following are four electrical components:

a. Sketches of current-voltage characteristics:

For components A and B, both of which obey Ohm's law, the current-voltage characteristics would be a straight line passing through the origin. The slope of the line for component B would be steeper than that of component A, indicating higher resistance.

  Current (I)

     ^

     |          B

     |         /

     |        /

     |       /

     |      /

     |     /

     |    /

     |   /

     |  /

     | /

     |/

     +------------------> Voltage (V)

     Current (I)

     ^

     |          A

     |         /

     |        /

     |       /

     |      /

     |     /

     |    /

     |   /

     |  /

     | /

     |/

     +------------------> Voltage (V)

For component C, a filament lamp, the current-voltage characteristic would be a curve that is not linear. It would exhibit a non-linear increase in current with increasing voltage. At lower voltages, the lamp would have low resistance, but as the voltage increases, the resistance of the filament also increases due to the phenomenon of thermal self-regulation. This leads to a slower increase in current at higher voltages.

For component D, a component that does not obey Ohm's law, the current-voltage characteristic could be any non-linear curve depending on the specific component chosen. Examples of components that do not obey Ohm's law include diodes and transistors.

b. The shape of the characteristic for component C, the filament lamp, can be explained by its construction. A filament lamp consists of a filament made of a resistive material, typically tungsten, which heats up and emits light when an electric current passes through it. As the voltage across the filament increases, the temperature of the filament increases as well, causing its resistance to increase. This increase in resistance results in a slower increase in current with increasing voltage, leading to the characteristic non-linear curve observed.

c. The component chosen for D, which does not obey Ohm's law, could be a diode. A diode is a two-terminal electronic component that allows the current to flow in only one direction. It exhibits a non-linear current-voltage characteristic where it conducts current only when the voltage is above a certain threshold, known as the forward voltage. Below this threshold, the diode has a high resistance and blocks current flow in the reverse direction. The characteristic curve of a diode would show negligible current flow until the forward voltage is reached, after which it exhibits a rapid increase in current with a relatively constant voltage.

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Answer:

Explanation:

You can use \(Q = mc\Delta T=(550)(4.184)(28.8-12.7)=37049.32\) joule.

Answer:

Mag isip ka po wag Kang tanong ng tanong kac kami po Yung nahihirapan mag hanap ng answer

The direction of the given vector B of 18.6 m that is 80° left of the positive y-axis is 170°

Angle of the vector made with positive y-axis = 80°

Angle between positive x and y axis = 90°

Direction of B, θ = 90° + 80°

θ = 170°

Direction of a vector is the angle of the vector that is made with positive x-axis. A vector with a certain direction of certain degrees means that the vector is rotated that much degrees in counter-clockwise direction relative to positive x-axis.

Therefore, the direction of the vector B is 170°

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The volume of the vegetable oil is  0.00003998 m³.

The density of vegetable oil,

ρ = 913 kg/m³

The mass of vegetable oil,

m = 0.0365 kg

To find: The volume of the vegetable oil, V Solution: The density of any substance is defined as the mass of the substance per unit volume.

The formula for density is:

ρ = m/V

where, ρ is the density of the substancem is the mass of the substance V is the volume of the substance We can rearrange the above formula to find the volume of the substance:

V = m/ρSubstituting the given values of mass and density in the above formula,

We get:

V = 0.0365 kg / 913 kg/m³ = 0.00003998 m³ (approx)

Therefore, the volume of the vegetable oil is approximately 0.00003998 m³.

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Answer:

The delicate balance between temperature and magnetic domains is destabilized when a magnet is subjected to high temperatures. If a magnet is exposed to this temperature for an extended length of time or heated over its Curie temperature, it will lose its magnetism and become irreversibly demagnetized.

Explanation:

If the impulse is strong enough and lasts for a sufficient amount of time, the go-kart will eventually come to a stop.

Option A is correct.

impulse is described as the integral of a force, F, over the time interval, t, for which it acts. Since force is a vector quantity, impulse is also a vector quantity.

If the force is insufficient to stop the go-kart entirely, it will slow down but continue to move. The force and duration of the impulse, along with the mass and speed of the go-kart, will all affect how much deceleration occurs.

Given that momentum plus impulse equals zero, the go-kart's change in momentum as a result of the impulse will be equal in amount but will move in the opposite direction of its original momentum.

As a result, the go-kart's final momentum will be zero, suggesting that it has either stopped or is travelling very slowly.

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Baded on the law of conservation of energy, the total energy in a systemis constant even though it change form.

Energy is defined as the ability to do work.

Energy occurs in many forms such as:

Energy according to law of conservation of energy, cannot be created nor destroyed, but change from one form to another.

For example, electrical energy can be converted to light and sound energy. However, the total energy remains constant.

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The magnitude and direction of the electric field is equal to 3.45 x10^13 N/m and the direction in towards the negative charge.

To calculate the electric field of a point it is necessary to use the following expression:

                                             \(E = k\frac{Q}{d^{2}}\)

Thus, calculating the field formed by each charge we have:

                                    \(E = 9 \times 10^{9} \times \frac{8}{36\times 0.0001}\)

                                      \(E = 2\times 10^{13} V/m\)

                                   \(E = 9 \times 10^{9} \times \frac{5.8}{36\times 0.0001}\)

                                    \(E = 1.45 \times 10^{13} N/m\)

The direction of the electric field of the negative charge is towards the charge (attracted) and of the positive charge is repelled.

So, we can add the two values ​​of field found, since the two are directed towards the negative charge, so that :

                                       \(E = 2 \times 10^{13} + 1.45 \times 10^{13}\)

                                       \(E = 3.45 \times 10^{13} N/m\)

So, the magnitude of eletric field is equal to 3.45 x10^13 N/m and the direction in towards the negative charge.

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Answer:

= 1200m/s or 1.2 x \(10^{3}\) m/s

Explanation:

The rest mass of the electron would be 1.82x10^-30 kg.

The rest mass of the electron can be calculated using the formula:

E = mc^2

where E is the energy of the photon, m is the rest mass of the electron, and c is the speed of light.

Rearranging the formula, we get:

m = E/c^2

Substituting the given values, we get:

m = (1.64x10^-13 J) / (3x10^8 m/s)^2

m = 1.82x10^-30 kg

Therefore, the rest mass of the electron is 1.82x10^-30 kg.

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Answer:

1950 kpa

Explanation:

9 ÷ .6 = 15 times the speed. so 15 times the pressure 130 x15 = 1950 kpa

Answer:

\(.\)

Answer:

Answer of Magnetism

                                    ;- the ability to attract and charm people

                                                      OR

Magnetism is the force exerted by magnets when they attract or repel each other. Magnetism is caused by the motion of electric charges. Every substance is made up of tiny units called atoms. ... Their movement generates an electric current and causes each electron to act like a microscopic magnet

Answer of electromegnetism

Electromagnetism is defined as an attraction between particles which is defined as created by electricity. An example of electromagnetism is the force which is the basic operation of an electric motor. ... The branch of physics that deals with the interaction of electric and magnetic fields.

Explanation:

Answer:

In explosives,potential energy is in the stored form of chemical energy.

Answer:

De cual Tema??? jajaja no se que necesitas

Answer:

El análisis temático es un método de análisis de datos cualitativos. Por lo general, se aplica a un conjunto de textos, como las transcripciones de entrevistas. El investigador examina de cerca los datos para identificar temas comunes: temas, ideas y patrones de significado que surgen repetidamente.

Explanation:

The phase of the Moon changes from new Moon to a full Moon when the Moon moves around the earth until it is between the Sun and the Earth.

The moon is a large massive body which is found in orbits around the earth.

The moon is said to be the satellite of the earth and orbits the earth in the form of a moon cycle or phases.

The moon cycle occurs when the move moves around the earth from the full moon to a new moon.

Therefore, the phase of the Moon changes from new Moon to a full Moon when the Moon moves around the earth until it is between the Sun and the Earth.

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Answer: the awnser to this question is 15

Explanation:

First you will divide the typing speed and the total number of words by the speed 2000 ÷ 50

Then divide bobs typing speed by 2000 equation 2000÷80 once you get the total both you will subtract the 2 totals together and get 15 as your awnser.

Hoped this helped!

With a 25.1 m/s2 acceleration, 2,946.19 N of horizontal force is required to push the trunk across the floor to the left.

Usually, the Greek letter mu is used to indicate it (). is mathematically equivalent to F/N, where F denotes frictional force and N is normal force. Due to the fact that F and N are both measured in units of force, the coefficient of friction has no dimensions (such as newtons or pounds).

An object's mass times its acceleration equals the object's net force:

F_net = m * a

The applied force less the frictional force equals the net force acting on the trunk:

F_net = F_applied - F_friction

The force of friction is given by:

F_friction = μ * N

As there is no vertical acceleration of the trunk, its weight is equal to the normal force:

N = m * g

where g is the gravitational acceleration.

When you combine everything, you get:

F_net = F_applied - μ * m * g = m * a

With the applied force factored in, we obtain:

F_applied = m * (a + μ * g)

Plugging in the given values, we get:

F_applied = 105 N * (25.1 m/s^2 + 0.63 * 9.81 m/s^2) = 2,946.19 N

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Answer: 490

Explanation:

Answer:

a)   \(\omega=9.10*10^{-4}rad/sec\)

b)   \(V=1.8217*10^{-3}\)

Explanation:

From the question we are told that:

Mass of woman \(M_w=55kg\)

Radius of merry go round \(r=2.0m\)

Rotational inertia \(i= 1250 kg-m2\)

Mass of rock \(M_r=350g \approx 0.350kg\)

Speed of rock \(V_r=2.0m/s\)

Tangent angle to the outer edge \(\theta=1\)

a)

Generally the equation for conservation of momentum is mathematically given by

\(M_r(ucos\theta)r=(I+M_wr^2)\omega\)

\(0.350(2.0cos1)(2.0)=(1250+(55)(2.0)^2)\omega\)

\(1.3998=1470\omega\\\omega=\frac{1.339}{1470}\)

\(\omega=9.10*10^{-4}rad/sec\)

b)

Generally the equation for linear speed V is mathematically given by

\(V=r\omega\\V=2.0*9.10*10^{-4}\)

\(V=1.8217*10^{-3}\)

Answer:

it's the distance between objects in space

Explanation:  Light travels super fast; but it still takes a long time to travel between objects in space. This is because distances between objects in space are enormous.

And can i please receive a brainliest  and have a good day

A 66.1-kg boy is surfing and catches a wave which gives him an initial speed of 1.60 m/s. He then drops through a height of 1.59 m, and ends with a speed of 8.51 m/s. The nonconservative work done on the boy is approximately -42.7 kilojoules.

To find the nonconservative work done on the boy, we need to consider the change in the boy's mechanical energy during the process. Mechanical energy is the sum of the boy's kinetic energy (KE) and gravitational potential energy (PE).

The initial mechanical energy of the boy is given by the sum of his kinetic energy and potential energy when he catches the wave:

E_initial = KE_initial + PE_initial

The final mechanical energy of the boy is given by the sum of his kinetic energy and potential energy after he drops through the height:

E_final = KE_final + PE_final

The nonconservative work done on the boy is equal to the change in mechanical energy:

Work_nonconservative = E_final - E_initial

Let's calculate each term:

KE_initial = (1/2) * m * v_initial^2

= (1/2) * 66.1 kg * (1.60 m/s)^2

PE_initial = m * g * h_initial

= 66.1 kg * 9.8 m/s^2 * 1.59 m

KE_final = (1/2) * m * v_final^2

= (1/2) * 66.1 kg * (8.51 m/s)^2

PE_final = m * g * h_final

= 66.1 kg * 9.8 m/s^2 * 0

Since the boy ends at ground level, the final potential energy is zero.

Substituting the values into the equation for nonconservative work:

Work_nonconservative = (KE_final + PE_final) - (KE_initial + PE_initial)

Simplifying:

Work_nonconservative = KE_final - KE_initial - PE_initial

Calculating the values:

KE_initial = (1/2) * 66.1 kg * (1.60 m/s)^2

PE_initial = 66.1 kg * 9.8 m/s^2 * 1.59 m

KE_final = (1/2) * 66.1 kg * (8.51 m/s)^2

Substituting the values:

Work_nonconservative = [(1/2) * 66.1 kg * (8.51 m/s)^2] - [(1/2) * 66.1 kg * (1.60 m/s)^2 - 66.1 kg * 9.8 m/s^2 * 1.59 m]

Calculating the result:

Work_nonconservative ≈ -42.7 kJ

Therefore, the nonconservative work done on the boy is approximately -42.7 kilojoules. The negative sign indicates that work is done on the boy, meaning that energy is transferred away from the boy during the process.

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The temperature gradient in the flow of direction is 294525 W.

A temperature gradient is the gradual variance in temperature with distance. The slope of the gradient is consistent within a material. A gradient is established anytime two materials at different temperatures are in physical contact with each other.

Q= T/( L/ KA)

Q= ( 1500 − 450) / 0.15 / 9.35v * 4.35)

   = 294525 W

Units of measure of temperature gradients are degrees per unit distance, such as °F per inch or °C per meter.

Many temperature gradients exist naturally, while others are created. The largest temperature gradient on Earth is the Earth itself. Q= T/Ka.

Therefore, The temperature gradient in the flow of direction is 294525 W.

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5.73 seconds pass before the centripetal acceleration equals the tangential acceleration in strength.

This enables you to calculate the change in velocity in metres per second squared (m/s²). The change in velocity (v) over the change in time (t) is known as acceleration (a). It can be determined using the formula a = v/t.

a = v²/r

where a is the centripetal acceleration, v is the speed of the car, and r is the radius of the circular track (half the diameter).

a = (2.97 m/s²)

r = (195 m)/2 = 97.5 m

v² = ar = (2.97 m/s²)(97.5 m) = 289.58 m²/s²

v = √(289.58 m²/s²) = 17.01 m/s

at = dv/dt

where at is the tangential acceleration, and v is the speed of the car. Since the car is starting from rest, its initial speed is zero, so we can simplify the formula to:

at = v/t

where t is the elapsed time.

We want to find the time at which the magnitude of the tangential acceleration is equal to the magnitude of the centripetal acceleration, so:

at = ac

v/t = ac

t = v/ac = 17.01 m/s / 2.97 m/s² = 5.73 s

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The weight of the pail and sand necessary to start the pumpkin moving in this case is less than 11 N.

The force of friction acting on the pumpkin depends on the weight of the pumpkin and the coefficient of static friction.

F = μW

where;

The weight of the pumpkin is calculated as follows;

W = mg

where;

W = 1.8 kg  x  9.8 m/s²

W = 17.64 N

The static friction force preventing the pumpkin from moving is calculated as follows;

F = μW

F = 0.55 x 17.64 N

F = 9.7 N

Thus, the minimum force required to move the pumpkin is 9.7 N which is less than 11 N.

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The complete question is blow:

Suppose the coefficient of static friction is 0.55 rather than 0.61. is the weight of the pail and sand necessary to start the pumpkin moving in this case greater than, less than or equal to 11 N? calculate the required weight. mass of the pumpkin is 1.8 kg.