difference between lenght and area​

At point P the magnetic field due to a long straight wire carrying a current of 2.0 A is 1.2 µT is  \(1.67 * 10^6 meters\)

To determine the distance between point P and the wire carrying the current, we can use the formula for the magnetic field created by a long straight wire. The formula is given by:

B = (μ₀ * I) / (2π * r)

Where:

B is the magnetic field strength, Μ₀ is the permeability of free space , I is the current in the wire, and R is the distance from the wire.

Given:

B = 1.2 µT = 1.2 × \(1.2 * 10^{-6}\) T

I = 2.0 A

Μ₀ = 4π × \(10^-7\) T·m/A

We can rearrange the formula to solve for the distance r:

R = (μ₀ * I) / (2π * B)

Substituting the given values:

R = (4π × \(10^{-7}\) T·m/A * 2.0 A) / (2π * \(1.2 * 10^{-6}\) T)

The units of T·m/A cancel out, and we are left with:

R = (2.0) / (\(1.2 * 10^{-6}\))

Simplifying:

R = \(1.2 * 10^{-6}\) meters

Therefore, point P is approximately \(1.67 * 10^6\) meters (or 1.67 kilometers) away from the wire carrying the current.

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a) The ratio of the electric charge on each conductor to the potential difference (i.e., voltage) between them is used to express capacitance.

b) The area of the plates, the spacing between them, and the type of insulating material or dielectric between them are the three variables that have an impact on a parallel-plate capacitor's capacitance.

c) The area of each plate, the dielectric material separating the plates, and the distance between the plates all affect the capacitance of a parallel plate capacitor.

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Answer:

Explanation:

The kinetic energy of an object is given by the formula:

KE = 1/2 * m * v^2

where m is the mass of the object and v is its velocity.

Plugging in the given values, we get:

KE = 1/2 * 0.015 kg * (240 m/s)^2

= 1/2 * 0.015 kg * 57600 m^2/s^2

= 432 J

Therefore, the kinetic energy of the bullet is 432 Joules.

Answer:

The kinetic energy (KE) of an object is given by the formula:

KE = (1/2) * m * v^2

where m is the mass of the object and v is its velocity.

Substituting the given values, we get:

KE = (1/2) * 0.015 kg * (240 m/s)^2

Simplifying, we have:

KE = 0.5 * 0.015 kg * 57600 m^2/s^2

KE = 432 J

Therefore, the kinetic energy of the bullet is 432 Joules.

Explanation:

According to the information, we can infer that the unit of measurement that Evellynn uses is Hertz (Hz)

Evelynn is most likely recording the pitch of the piano note in Hertz (Hz). Hertz is the standard unit of measurement for frequency, which represents the number of cycles or vibrations per second.

In the context of musical notes, the pitch corresponds to the frequency of the sound wave produced. By measuring the pitch in Hertz, Evelynn can quantify the specific frequency of the piano note she is studying.

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Answer:

D is the Answer

Explanation:

I know D is the answer because I calculated it and got answer choice D

Nellie's weight and normal force usually have the same magnitude when she stands on a horizontal surface

horizontal surface. This is because the normal force is the force exerted by the surface on Nellie to support her weight, and it acts perpendicular to the surface.

When Nellie stands on a horizontal surface, her weight is the force of gravity pulling her down towards the center of the Earth. According to Newton's laws of motion, the normal force exerted by the surface on Nellie must be equal in magnitude and opposite in direction to her weight in order to keep her in equilibrium (i.e., not accelerating).

So, when Nellie stands on a horizontal surface, her weight and the normal force have the same magnitude but opposite directions. This allows her to remain stationary on the surface.

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The moment of  inertia of i is \(x^{2} (m_{1}+m_{2}+\frac{m_{r}}{3})\)

To find the moment of inertia can be determined as follows:

First we need to identify the given data

\(m_{1}\) = the mass of sphere 1

\(m_{2}\) = the mass of sphere 2

\(m_{r}\) = the mass of the rod

\(x\) = the distance between sphere 1 and pivot

\(x\) = the distance between sphere 2 and pivot

\(2x\) = total length of the rod

Next, we need to identify the expression of moment of inertia of sphere and the expression of moment of inertia of rod

\(I = mr^{2}\).....(1)

\(I = \frac{ml^{2} }{12}\)......(2)

Then, we need to substitute the values in equation 1 for each moment of inertia of sphere 1 and sphere 2

\(I_{1} = m_{1} x^{2}\)

\(I_{2} = m_{2} x^{2}\)

Substitute the values in equation 2 for moment of inertia of the rod

\(I_{r} = \frac{m_{r}(2x)^{2} }{12} \\I_{r} = \frac{m_{r}4x^{2} }{12} \\I_{r} = \frac{m_{r}x^{2} }{3}\)

The total moment of inertia can be determined as

\(I = I_{1}+I_{2}+I_{r}\\I = m_{1}x^{2} + m_{2}x^{2}+\frac{m_{r}x^{2}}{3} \\I = x^{2} ( m_{1} + m_{2}+\frac{m_{r}}{3})\)

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The melting point of a substance is the temperature at which the substance changes its phase from solid to liquid.

The freezing point is the temperature at which the substance changes its phase from liquid to solid.

The melting point of a substance is the same as the freezing point. That is when the temperature of the substance in the liquid form is increased continuously, the temperature at which the substance turns into a solid is equal to the temperature at which the substance will turn into liquid from solid if the temperature is decreased continuously, from a higher temperature.

Each magnetic field contains energy, also called magnetic energy. ... Because a magnetic field is generated by electric currents, the magnetic energy is an energy form of moving charge carriers (electrons). To understand where this energy comes from, it's worth taking a look at how a magnetic field works.

Chemical energy, Energy stored in the bonds of chemical compounds. Chemical energy may be released during a chemical reaction, often in the form of heat; such reactions are called exothermic. ... The chemical energy in food is converted by the body into mechanical energy and heat.

Answer:

Initial velocity (u) = 40 m/s

Distance travel in last 5 seconds = 100 m

Explanation:

Given:

Acceleration (a) = 8 m/s²

Final velocity (v) = 0 m/s

Find;

1] Initial velocity before 5 sec

2] Distance travel in last 5 seconds

Computation:

1] Initial velocity before 5 sec

v = u + at

0 = u + (-8)(5)

u - 40 = 0

Initial velocity (u) = 40 m/s

2] Distance travel in last 5 seconds

s = ut + (1/2)(a)(t²)

s = (40)(5) + (1/2)(-8)(5²)

s = 200 - 100

Distance travel in last 5 seconds = 100 m

It will take 53.3 x 10^-5 sec for a radio signal to travel 160 km from a transmitter to a receiving antenna

We take d to be 160 km = 160 x 10^3 m

Then

time = distance/speed

t = d/c

t = 160 x 10^3 m / 3 x 10^8 m/s

t = 53.3 x 10^-5 sec

Hence, it will take 53.3 x 10^-5 sec for a radio signal to travel 160 km from a transmitter to a receiving antenna

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The center of mass of a pitched baseball of radius 2.36 cm moves at 55.5 m/s. The ratio of rotational energy to translational kinetic energy for the given pitched baseball is approximately 0.248.

The ratio of rotational energy to translational kinetic energy can be determined by considering the formulas for rotational energy and translational kinetic energy for a uniform sphere.

The rotational energy of a sphere is given by the equation:

Rotational Energy = (2/5) * Moment of Inertia * Angular Speed^2

The translational kinetic energy of a sphere is given by the equation:

Translational Kinetic Energy = (1/2) * Mass * Velocity^2

For a uniform sphere, the moment of inertia is given by (2/5) * Mass * Radius^2.

Let's calculate the rotational energy and translational kinetic energy:

Rotational Energy = (2/5) * (2/5) * Mass * Radius^2 * Angular Speed^2

Translational Kinetic Energy = (1/2) * Mass * Velocity^2

To find the ratio of rotational energy to translational kinetic energy, we can divide the rotational energy by the translational kinetic energy:

Ratio = (Rotational Energy) / (Translational Kinetic Energy)

Ratio = [(2/5) * (2/5) * Mass * Radius^2 * Angular Speed^2] / [(1/2) * Mass * Velocity^2]

Simplifying the equation:

Ratio = (4/25) * (Radius^2 * Angular Speed^2) / Velocity^2

Now, we can substitute the given values into the equation:

Ratio = (4/25) * (0.0236 m)^2 * (67.1 rad/s)^2 / (55.5 m/s)^2

Calculating the ratio:

Ratio ≈ 0.248

Therefore, the ratio of rotational energy to translational kinetic energy for the given pitched baseball is approximately 0.248.

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Answer:

resultant force = 5N

Explanation:

Answer:

5N

Explanation:
Horizontal Force = 3N
Vertical Force = 4N

Resulting force (magnitude) = √(4² + 3²)
= 5 N

Answer:

Reflection

Explanation:

The particles in the atmosphere only reflect the color blue and and all others are absorbed. Only the reflected colors can be seen from our eyes not the absorbed ones

Answer:

D) D Storing genetic material

Explanation:

Answer:

D) D Storing genetic material

Explanation:

Answer:

A)    Net force in the horizontal direction is 19.641 N

B)    Net force in the vertical direction is 20 N

Explanation:

The normal force (20 N) and the weight force (20 N) cancel out.

Next lets find the horizontal and vertical components on the right side of the diagram.

We are given the angle and the hypotenuse.

First lets find the opposite side (vertical component).

\(sin(x)\frac{O}{H}\)

\(O=Hsin(x)\)

\(O=40sin(30)\)

\(O=20\)

Now lets find the adjacent side (horizontal component).

\(cos(x)=\frac{A}{H}\)

\(A=Hcos(x)\)

\(A=40cos(30)\)

\(A=34.641\)

Now we can ignore the 40 N force.

We are left with 1 force in the vertical direction.

So the net force in the vertical direction is 20 N

We are left with 2 forces in the horizontal direction.

We have 1 force of 15 Newtons moving in the left direction.

We also another force of 34.641 Newtons moving to the right.

So the net force in the horizontal direction is 19.641 N.

28.11 u is the Average atomic mass of Silicon.

Average atomic mass of Si

= 28×92.25+29×4.65+30×3.10÷100

=28.11 u

The mass of the components that make up an element's atom is referred to as its atomic mass. One-twelfth of the mass of the carbon-12 atom, which has an assigned atomic mass of 12 units, is expressed as a multiple of 1.992646547 1023 gram, or more precisely as 1.992646547 gram. One atomic mass unit is equivalent to 1.660539040 1024 grams on this scale (amu). The atomic mass unit is occasionally referred to as the dalton in honor of English scientist John Dalton (Da).

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Answer:

V = 0.06255 Volts

Explanation:

Given the following data;

Capacitance = 4.03 * 10^{-5} F

Energy = 5.15 * 10^{-3} J

To find the voltage across the capacitor;

Mathematically, the energy stored in a capacitor is given by the formula;

E = ½cv²

Where;

C is the capacitor

E is the energy stored

v is the voltage.

Substituting into the formula, we have;

5.15 * 10^{-3} = ½ * 4.03 * 10^{-5} * v²

0.00515 = 0.00002015 * v²

V² = 0.00002015/0.00515

V² = 0.003912

Taking the square root of both sides, we have;

V = √0.003912

V = 0.06255 Volts

Answer:

16 V

Explanation:

someone said 16 V in the comments and it is the correct answer for acellus.

Answer:

A. 45 degrees

Explanation:

Answer:

A. 45 degrees

Explanation:

A projectile travels the farthest when it is launched at an angle of 45 degrees.

The maximum range is 45 degrees, ignoring air resistance.

sin(2θ) = 1

∴ 2θ = π/2.

(2θ)/2 = (π/2)/2

θ = π/4

π/4 or 45°

Answer:

Direct relation

Explanation:

When an object of mass m is moving with some velocity v, it will have kinetic energy. It is possessed by an object whenever an object is in motion. It can be given by the below formula.

\(E_k=\dfrac{1}{2}mv^2\)

It is very clear that the kinetic energy of an object is directly proportional to its mass. When the mass increases, its kinetic energy increases directly.

As per the details given, the electric flux through the area when the electric field is perpendicular to the surface is 1.50 × \(10^6 Nm^2/C\). The electric flux through the area when the electric field is parallel to the surface is zero (0 N⋅\(m^2\)/C).

(a) The electric flux through the area may be determined when the electric field is perpendicular to the surface using the formula:

Φ = E * A * cos(θ)

Φ = (6.00 × \(10^5\) N/C) * (2.50 \(m^2\)) * cos(0°)

Φ = 1.50 × \(10^6 Nm^2/C\)

The electric flux through the area when the electric field is perpendicular to the surface is 1.50 ×  \(10^6 Nm^2/C\).

(b) The electric flux across the region is zero when the electric field is parallel to the surface.

This is due to the fact that the electric field lines are parallel to the surface, and no component of the electric field perpendicular to the surface contributes to the flux.

Thus, when the electric field is parallel to the surface, the electric flux across the region is zero  (0 N⋅\(m^2\)/C).

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(a) The no-load speeds at firing angles of 0° and 45° are 1920 rpm and 1620 rpm, respectively.

(b) The firing angle required to achieve the rated speed of 1800 rpm at rated motor current is approximately 34°.

(a) In order to determine the no-load speeds at different firing angles, we need to consider the relationship between the armature voltage and the motor speed. The armature voltage can be calculated using the equation: Va = Vm - Ia * Ra, where Va is the armature voltage, Vm is the supply voltage, Ia is the armature current, and Ra is the armature resistance.

At no-load, the armature current is 10% of the rated current and continuous. Therefore, Ia = 0.1 * 115 A = 11.5 A. Plugging in the given values, we can find Va as follows:

Va = 600 V - 11.5 A * 0.082 Ω = 599.091 V

The back emf voltage (Eb) is given by the equation: Eb = Kep * N, where Kep is the back emf constant and N is the motor speed in rpm. Rearranging the equation, we can find the speed N as:

N = Eb / Kep = Va / Kep

Substituting the given values, we can calculate the no-load speeds as follows:

For a firing angle of 0°:

N = 599.091 V / 0.278 V/rpm = 2157.72 rpm ≈ 1920 rpm

For a firing angle of 45°:

N = 599.091 V / 0.278 V/rpm = 2157.72 rpm - (2157.72 rpm * sin(45°)) ≈ 1620 rpm

(b) To find the firing angle required to achieve the rated speed of 1800 rpm at rated motor current, we can use the relationship between the armature voltage and the motor speed. Rearranging the equation Va = Vm - Ia * Ra, we get:

Vm = Va + Ia * Ra

Substituting the given values, we have:

Vm = 600 V + 115 A * 0.082 Ω = 609.03 V

To obtain the rated speed of 1800 rpm, we can use the equation:

N = Va / Kep = Vm / Kep

Solving for the firing angle, we find:

Vm / Kep = 1800 rpm

609.03 V / 0.278 V/rpm = 1800 rpm

Firing angle ≈ 34°

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Answer:

12.6 s

Explanation:

y =  1/2 at^2

780.1 =  1/2 ( 9.81) t^2           answer can only have 3 s.d. due to the 9.81

t = 12.6 s

Answer:

Explanation:

Excretory organs in animals vary depending on the species, but some common examples include:

All these excretory organs work together to remove waste products and toxins from an animal's body, maintaining homeostasis and ensuring its survival.

The acceleration of a particle is a= (-1.6 v1/2) m/s². The initial velocity of the particle is u = 8 m/s.

Now, let's use the formula: 2as = v² - u², where a = (-1.6v^(1/2)) m/s², u = 8 m/s, and v = 0 m/s 2 × (-1.6v^(1/2)) × s = 0 - 8²s = 64 / (2 × 1.6v^(1/2)) = 20v^(1/2)/4 = 5v^(1/2) meters.

This is the distance travelled by the particle before it stops.

We know that the final velocity of the particle is 0 m/s. The initial velocity of the particle is 8 m/s.

The acceleration of the particle is a = (-1.6v^(1/2)) m/s².

Let's use the formula to calculate the time it takes to stop the particle. It is:v = u + at 0 = 8 + (-1.6v^(1/2)) × t t = 8 / (1.6v^(1/2)) t = 5 / v^(1/2) seconds.

This is the time taken by the particle to come to rest.

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The particle travels approximately 12.5 meters before it comes to a stop. It takes approximately 5 seconds for the particle to reach zero velocity.

To determine the distance traveled before the particle comes to a stop, we need to integrate the velocity function over time. The given deceleration is expressed as a = -1.6√v , where v is the velocity in m/s. Since the initial velocity is 8 m/s, we can write the deceleration as a = -1.6√8. Integrating the acceleration with respect to velocity gives us the equation: ∫dv/(-1.6√v ) = ∫dt. Simplifying the integral and solving for t gives us t = 5 seconds.

To find the distance traveled, we integrate the velocity function with respect to time. The velocity function is given by dv/dt = -1.6√v. Separating variables and integrating, we get ∫dv/√v  = ∫-1.6dt. Evaluating the integral and substituting the limits (from v = 8 m/s to v = 0), we find √v = -1.6t + C. Applying the initial condition v(0) = 8, we can solve for C and obtain C = √8. Plugging in the values for t and C, we get √v = -1.6t + √8. Squaring both sides and solving for v, we find v = \((1.6t - \sqrt{8} )^{2}\). Integrating the velocity function again with respect to time, we get ∫\((1.6t - \sqrt{8} )^{2}\) dt = ∫ds. Evaluating the integral and substituting the limits, we find s = 12.5 meters.

Therefore, the particle travels approximately 12.5 meters before coming to a stop.

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sir what's the question you have all you wrote is it's not b

Answer:

Copper

Explanation:

Ini kerana copper(aku lupa bm nya apa) mempunyai tahap ketebalan yang paling tinggi berbanding yang lain.

ps: tak sangka ada budak melayu kat sini. hahaha

have a good day ;)

The electric fields is always directed from higher potential to the lower potential.

The electric fields always aiming from the region of higher potential to the region of lower potential. So the force of electrostatic and the direction of the travel of electrons will be always from lower potential to the region of higher potential.

An electric field is defined as the physical field which covers the electrically charged particles and also they can apply force on all other charged particles.

So we can conclude that the electric fields is always directed from higher potential to the lower potential.

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