A piñata with a weight of 115 N is supported by a single piece of kite string. What is the string’s tension if the piñata is accelerated upward at a rate of 2.43 m/s2?

​

The center of a 1.5 cm wide loop has a magnetic field of 3.0 mT. About 0.3 Amperes of current flow through the loop. A 3.0 mT magnetic field is present about 0.2 meters away from the wire.

To solve this problem, we can use the formula for the magnetic field produced by a current-carrying loop and the formula for the magnetic field produced by a current-carrying wire.

Answer of the following questions are below :  

(a) The magnetic field at the center of a current-carrying loop is given by the formula:

\(B = \frac{\mu_0 \cdot I \cdot N}{2 \cdot R}\)

Where B is the magnetic field, μ₀ is the permeability of free space (4π × 10⁻⁷ T·m/A), I is the current, N is the number of turns in the loop, and R is the radius of the loop.

We are given that the magnetic field is 3.0 mT (3.0 × 10⁻³ T) and the radius of the loop is 1.5 cm (0.015 m).

Substituting these values into the formula, we can solve for the current:

\(3.0 \times 10^{-3} \, \text{T} = \frac{4\pi \times 10^{-7} \, \text{T}\cdot\text{m/A} \cdot I}{2 \cdot 0.015 \, \text{m}}\)

Simplifying the equation, we find:

\(I = \frac{(3.0 \times 10^{-3} \, \text{T}) \cdot (2 \cdot 0.015 \, \text{m})}{4\pi \times 10^{-7} \, \text{T}\cdot\text{m/A}}\)

Calculating this expression, we get:

I ≈ 0.3 A

Therefore, the current in the loop is approximately 0.3 Amperes.

(b) The magnetic field produced by a long straight wire carrying current is given by the formula:

\(B = \frac{\mu_0 \cdot I}{2\pi \cdot r}\)

Where B is the magnetic field, μ₀ is the permeability of free space (4π × 10⁻⁷ T·m/A), I is the current, and r is the distance from the wire.

We are given that the magnetic field is 3.0 mT (3.0 × 10⁻³ T).

Substituting these values into the formula, we can solve for the distance from the wire:

\(3.0 \times 10^{-3} \, \text{T} = \frac{4\pi \times 10^{-7} \, \text{T} \cdot \text{m/A} \cdot I}{2\pi \cdot r}\)

Simplifying the equation, we find:

\(r = \frac{4\pi \times 10^{-7} \, \text{T} \cdot \text{m/A} \cdot I}{2\pi \cdot (3.0 \times 10^{-3} \, \text{T})}\)

Calculating this expression, we get:

r ≈ 0.2 m

Therefore, the magnetic field of 3.0 mT is found at a distance of approximately 0.2 meters from the wire.

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Answer:

7-12-99

Explanation:

Voltage can be thought of as the pressure pushing charges along a conductor, while the electrical resistance of a conductor is a measure of how difficult it is to push the charges along. Using the flow analogy, electrical resistance is similar to friction. For water flowing through a pipe, a long narrow pipe provides more resistance to the flow than does a short fat pipe. The same applies for flowing currents: long thin wires provide more resistance than do short thick wires.

The resistance (R) of a material depends on its length, cross-sectional area, and the resistivity (the Greek letter rho), a number that depends on the material: The resistivity and conductivity are inversely related. Good conductors have low resistivity, while poor conductors (insulators) have resistivities that can be 20 orders of magnitude larger. 

Resistance also depends on temperature, usually increasing as the temperature increases. For reasonably small changes in temperature, the change in resistivity, and therefore the change in resistance, is proportional to the temperature change. This is reflected in the equations:At low temperatures some materials, known as superconductors, have no resistance at all. Resistance in wires produces a loss of energy (usually in the form of heat), so materials with no resistance produce no energy loss when currents pass through them.

Ohm's Law

In many materials, the voltage and resistance are connected by Ohm's Law: Ohm's Law : V = IR. The connection between voltage and resistance can be more complicated in some materials.These materials are called non-ohmic. We'll focus mainly on ohmic materials for now, those obeying Ohm's Law.

Example

A copper wire has a length of 160 m and a diameter of 1.00 mm. If the wire is connected to a 1.5-volt battery, how much current flows through the wire?

The current can be found from Ohm's Law, V = IR.

The V is the battery voltage, so if R can be determined then the current can be calculated. The first step, then, is to find the resistance of the wire:L is the length, 1.60 m. The resistivity can be found from the table on page 535 in the textbook.

The area is the cross-sectional area of the wire. This can be calculated using:The resistance of the wire is then:

The current can now be found from:

Ohm's Law:I = V / R = 1.5 / 3.5 = 0.428 A

i dont know for real

Answer:

Force = 2802.8 Newton

Explanation:

Given the following data;

Mass = 130 lbs

But, 2.2 lbs = 1.0 kg

130 lbs to kg = 130 * 2.2 = 286 kg

Acceleration due to gravity = 9.8m/s²

To find the force in Newton;

Force = mass * acceleration due to gravity

Force = 286 * 9.8

Force = 2802.8 Newton

Answer:

Atom has become a cation.

Atom has lost 2 electrons.

Explanation:

Based on the ionic notation of the element or ion given, we can clearly state that the atom has become a cation and it has lost two electrons.

A cation is an atom that has lost electrons to become positively charged.

In a neutral atom, the number of protons and electrons are the same.

Protons are the positively charged particles within an atom.

Electrons are the negatively charged particles.

 When an atom loses electrons, it becomes positively charged because the number of electrons is now more.

Positively charged atoms are called cations.

The average force acting on the car is 1000 N.

The definition of force in physics is: The push or pull on a massed object changes its velocity. An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude.

Given that: A 600-kg car is moving at 5 m/s then comes to a stop in 3 seconds.

Now according to Newton's 2nd law of motion:

Magnitude of force applied on the body = change in momentum/time interval

= I final momentum - initial momentum I/time interval

= I 0 - 600×5 I /3 N

= 10000 N

Hence, average force acting on the car is 1000 N.

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Answer:

260 Newtons

Explanation:

Okay, so what you have to do is know what the question is asking. It wants to know the force perpendicular to the ground. We know perpendicular makes a right angle, so we use the diagram to make it into a right triangle with a degree of 60, and hypotunese of 300 newtons. Now, we use basic trigonometry, we place x on the horizontal side since it perpendicular to the ground. We know it´s sin because x is opposite to 300 which is the hyp.

Sin= opp/hyp

x/300

sin(60)= x/300

300*sin(60)= 259.8, which rounds to

260 Newtons

There is your answer :D. Happy to help.

The component of the force which is perpendicular to the ground is → F [y] = 261 a[y].

A vector V making an angle θ with the x - axis, can be resolved into two two components along the x and y - axes respectively as →

V = Vcosθ a[x] + Vsinθ a[y]

where -

a[x] is the unit vector along the +x axis

a[y] is the unit vector along the +y axis.

Given is a force of magnitude 300 N acting on the handle that makes an angle of 60° with the horizontal ground.

The component normal to the ground will be the component along the  y - axis. The component along the y - axis is the sine component. Suppose that vector F represents the force of magnitude (|F|) 300 N. The component perpendicular to the ground will be -

F [y] =  |F| sinθ a[y]

F [y] = 300 x sin(60°)  a[y]

F [y] = 300 x 0.87

F [y] = 261 a[y]

Therefore, the component of the force which is perpendicular to the ground is → F [y] = 261 a[y].

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the combination of the Doppler effect and the changes in air temperature and pressure with altitude would cause the person's scream to sound lower to the observer in the airplane.

If someone jumps out of an airplane without a parachute and starts screaming, the person in the plane would hear the scream at a lower pitch. This phenomenon occurs because of the Doppler effect, which describes how the frequency of a wave changes as the distance between the source and the observer changes.

In this scenario, the person in the airplane is the observer, while the person falling without a parachute is the source of the sound waves. As the distance between them increases, the sound waves produced by the falling person get stretched out or "redshifted," causing their frequency to decrease. This means that the pitch of the scream would appear lower to the observer in the airplane.

Additionally, the speed of sound also changes with temperature, pressure, and altitude. Since the air temperature and pressure decreases with altitude, the speed of sound also decreases. This can further contribute to the decrease in pitch of the scream.

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Visible light, ultraviolet rays, and X-rays are all forms of electromagnetic radiation, with differences in their wavelengths, frequencies, and energies.

Visible light is the part of the electromagnetic spectrum that human eyes can perceive. It has a wavelength range of 400-700 nanometers, with violet having the shortest wavelength and red having the longest. Visible light can be refracted, reflected, and diffracted, and it can be split into its component colors using a prism.

Ultraviolet (UV) rays have shorter wavelengths and higher frequencies than visible light. They have wavelengths between 10-400 nanometers. UV radiation is classified as UVA, UVB, and UVC, with UVC having the shortest wavelength and highest energy. UV rays can cause damage to DNA and can cause sunburn and skin cancer.

X-rays have even shorter wavelengths and higher frequencies than UV rays. X-rays have wavelengths between 0.01-10 nanometers. They can penetrate through materials that visible light and UV radiation cannot, such as body tissues and bones, making them useful in medical imaging. X-rays are also produced in outer space and can be used to study the universe.

In summary, the main differences between these types of electromagnetic radiation are their wavelengths, frequencies, and energies, which determine their properties and potential applications.

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The reason why scientists initially did not accept the continental drift hypothesis is because there was insufficient evidence to support the idea.

When Alfred Wegener first proposed the concept of continental drift in 1912, he lacked a convincing mechanism to explain how the continents moved. Moreover, his evidence was mainly based on the similar shapes of the continents and the presence of matching fossils and rock formations on separate landmasses. It was not until the discovery of plate tectonics in the 1960s that the scientific community fully accepted the idea of continental drift.

Scientists initially did not accept the continental drift hypothesis because there was no known mechanism for how the continents could move. Additionally, the idea of large land masses drifting across the Earth's surface seemed implausible, and there was not enough evidence to support the hypothesis. The hypothesis was also initially proposed by a single scientist, Alfred Wegener, and was not widely accepted in the scientific community at the time. It wasn't until later, with advancements in technology and the discovery of new evidence such as seafloor spreading and plate tectonics, that the continental drift hypothesis was finally accepted as a valid scientific theory.

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Answer:

I know I am super super late but it is C my guy :))

Explanation:

Have a nice day!!

The vibrational energies corresponding to v=0, 1, and 2 are approximately 7.74 x 10³ eV, 1.55 x 10⁴ eV, and 2.31 x 10⁴ eV, respectively.

To determine the vibrational energies corresponding to v=0, 1, and 2, we can use the equation for the vibrational energy of a diatomic molecule:

E = (v + 1/2) * h * f

where E is the vibrational energy, v is the vibrational quantum number, h is Planck's constant (6.626 x 10⁻³⁴ J·s), and f is the vibrational frequency.
To find the vibrational frequency, we can use the equation:
f = (1 / 2π) * √(k / μ)
where k is the force constant and μ is the reduced mass of the molecule, given by:
μ = (m₁ * m₂) / (m₁ + m₂)
Let's calculate the vibrational energies:
For v = 0:
μ = (2.66 x 10⁻²⁶ kg * 2.66 x 10⁻²⁶ kg) / (2.66 x 10⁻²⁶ kg + 2.66 x 10⁻²⁶ kg) = 1.33 x 10⁻²⁶ kg
f = (1 / 2π) * √(1177 N/m / 1.33 x 10⁻²⁶ kg) ≈ 3.71 x 10¹³ Hz
E = (0 + 1/2) * (6.626 x 10⁻³⁴ J·s) * (3.71 x 10¹³ Hz) = 1.24 x 10⁻²⁰ J = 7.74 x 10³ eV

For v = 1:
μ = (2.66 x 10⁻²⁶ kg * 2.66 x 10⁻²⁶ kg) / (2.66 x 10⁻²⁶ kg + 2.66 x 10⁻²⁶ kg) = 1.33 x 10⁻²⁶ kg
f = (1 / 2π) * √(1177 N/m / 1.33 x 10⁻²⁶ kg) ≈ 3.71 x 10¹³ Hz
E = (1 + 1/2) * (6.626 x 10⁻³⁴ J·s) * (3.71 x 10¹³ Hz) = 2.48 x 10⁻²⁰ J = 1.55 x 10⁴ eV

For v = 2:
μ = (2.66 x 10⁻²⁶ kg * 2.66 x 10⁻²⁶ kg) / (2.66 x 10⁻²⁶ kg + 2.66 x 10⁻²⁶ kg) = 1.33 x 10⁻²⁶ kg
f = (1 / 2π) * √(1177 N/m / 1.33 x 10⁻²⁶ kg) ≈ 3.71 x 10¹³ Hz
E = (2 + 1/2) * (6.626 x 10⁻³⁴ J·s) * (3.71 x 10¹³ Hz) = 3.71 x 10⁻²⁰ J = 2.31 x 10⁴ eV

In summary, the vibrational energies corresponding to v=0, 1, and 2 are approximately 7.74 x 10³ eV, 1.55 x 10⁴ eV, and 2.31 x 10⁴ eV, respectively.

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Answer: 0.25m/s

Explanation:

Answer:

Explanation:

Blab balh its 0.25 m/s

The study of chemical kinetics requires concentrations that are measured to determine the rate of the chemical reaction.

Chemical kinetics is the study of the rates and mechanisms of chemical reactions, and it plays a significant role in fields such as chemistry, biochemistry, and materials science. Concentrations are an essential parameter in chemical kinetics because the rate of a reaction is directly proportional to the concentration of the reactants. This means that as the concentration of the reactants increases, the rate of the reaction also increases. In addition, the concentration of the reactants is important in determining the order of the reaction.

The order of the reaction refers to the mathematical relationship between the rate of the reaction and the concentration of the reactants. Therefore, to accurately study chemical kinetics, it is necessary to measure concentrations of reactants and products at various times throughout the reaction. This data can then be used to determine the rate of the reaction and other important parameters such as activation energy, rate constants, and reaction mechanisms.

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Radial component of the linear acceleration = 99.47 m/s^2

The diameter of the wheel, d = 51 cm

The radius, r = d/2 = 51/2 = 25.5 cm

r = 25.5/100 = 0.255 m

r = 0.255 m

At t = 1.1, first calculate the new angular velocity

The radial component of the linear acceleration is given as:

Answer:

One explanation may be that as a group, teenagers react more impulsively to threatening situations than do children or adults, likely because their brains have to work harder to rein in their behavior, a research team reported here yesterday at the Society for Neuroscience meeting

Answer:

George Washington

Explanation:

Answer:

well for me

Explanation:

It was George Washington

Answer:

electrical energy change into heat and light energy.

Answer:

88 m ^2

Explanation:

Answer:

1512N

Explanation:

\(f = ma\)

here, m=63kg

a=24ms^-²

so, f=ma=63×24=1512N (Newton)

Answer:

2970dB

Explanation:

30 x99=2970

The sound heard following reflections from a hard surface such as a cliff or a wall is known as an echo. The time is taken to hear the echo will be 0.5 seconds.

The repeated same voice heard by the person when the voice is reflected from hard surfaces such as the wall is known as the echo.

Dolphins utilize the echo to identify for navigation. Sonar is a similar concept. Submarines use sonar teqnique.

speed of sound wave  = 320 m/sec

distance from the reference = 80 m

as we know that

Distance = speed × time

\(\rm Time=\frac{Distance}{Speed}\)

\(\rm Time=\frac{80}{320}\\\\ \rm Time=0.25 sec.\)

The total time to hear the echo will be twice the time travel on one side.

Total time = 2× 0.25

Total time = 0.5 sec

Hence the time is taken to hear the echo will be 0.5 seconds.

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For the student who weighs 460 N and weirs a backpack that weighs 73 N, we have:

a) The magnitude of the net force on the student is 533 N.

b) The magnitude of the contact force on the student by the backpack is 73 N.

c) The magnitude of the contact force on the student by the ground is 533 N.

a) The magnitude of the net force on the student is given by the sum of forces in the vertical direction:

\( \Sigma F_{net} = W_{s} + W_{b} \)

Where:

\( W_{s}\): is the weight of the student = 460 N        

\( W_{b}\): is the weight of the backpack = 73 N

Hence, the magnitude of the net force is:

\(\Sigma F_{net} = W_{s} + W_{b} = 460 N + 73 N = 533 N\)

b) The magnitude of the contact force on the student is equal to the normal force as follows:

\( F_{c} = N_{c} \)

Where:

\( N_{c} \): is the normal force on the student by the backpack

This normal force is opposite to the weight force:

\( F_{c} = N_{c} = -W_{b} = -73 N \)

Hence, the magnitude of the contact force on the student by the backpack is 73 N.

c) The magnitude of the contact force on the student by the ground is the normal force:

\( F_{n} = N_{g} \)

Where:

\(N_{g} \): is the normal force on the student by the ground  

The normal force on the student by the ground is the opposite to the net force of point A, so:

\( F_{n} = -F_{net} = -533 N \)        

Therefore, the magnitude of the contact force on the student by the ground is 533 N.  

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Answer:

A lightbulb is connected to an outlet that has a source of electricity. The electrical energy is converted into light energy to allow the bulb to glow.

Explanation: Lightning is a discharge of static electricity. The lightning bolt lights up the sky.

Answer: Any particle, whether an atom, molecule or ion, that contains less electrons than protons is said to be positively charged. Conversely, any particle that contains more electrons than protons is said to be negatively charged.

Explanation: If there are more electrons than protons in a piece of matter, it will have a negative charge, if there are fewer it will have a positive charge, and if there are equal numbers it will be neutral.

The atoms in a hot object move faster than atoms in a cold object.

Answer:

The atoms in a hot object move faster than atoms in a cold object. The atoms in a hot object have more kinetic energy than the atoms in a cold object. Adding heat to a substance will make the atoms vibrate more and when heat leaves the substance; the atoms will vibrate less. Potential energy is stored energy.

The density of solid right circular cylinder will be \(1.06\) x \(10^{-2}\) \(kg/ m^{3}\).

Radius r = 10 cm = 10 x \(10^{-2} m\)

Height h = 12 CM = 12 x \(10^{-2} m\)

Volume = π \(r^{2} h\)

mass m = 4 Kg

Density ρ = m/v = m/ π \(r^{2} h\)

= \(\frac{4}{3.14 . (10 x 10^{-2} ) (12 x 10^{-2} ) }\)  = \(1061 kg /m^{3}\)

Density = \(1.06\) x \(10^{-2}\) \(kg/ m^{3}\).

Thus density of  a solid right circular cylinder of a substance has a radius 10.0 cm and a height 12.0 cm. the mass of the cylinder is 4.00 kg is  \(1.06\) x \(10^{-2}\) \(kg/ m^{3}\).

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