Suppose a girl is standing on a pond where there is no friction between her feet and the ice. In order to get off the ice she can

The current carried by the popcorn popper is 9.67 A and the resistance of the popcorn popper is 12.4 Ω.

We can use Ohm's Law to solve for the current:

I = P/V = 1.16 kW / 120 V = 9.67 A

So the current carried by the popcorn popper is 9.67 A.

We can also use Ohm's Law to solve for the resistance:

R = V/I = 120 V / 9.67 A = 12.4 Ω

So the resistance of the popcorn popper is 12.4 Ω.

What is a current, exactly?

Electrical charge carriers, often electrons or atoms lacking in electrons, travel as current.

The capital letter I is a typical way to represent current.

The ampere, denoted by the letter A, is the common unit.

What exactly did resistance mean?

The action of defending yourself from an aggressor or rejecting an offer.

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When a twirling ice skater brings her arms inward, her rotational speed will be increases as the moment of inertia decreases.

The Rotational speed also called as the speed of the rotation that can be as the quantified as the number of the revolutions of the rotating system makes within the defined period of time. If she are initially rotating with her arms outstretched, then if  she draw her arms inward, her moment of inertia will be decreases. This means that the angular velocity will be increase, and she spin faster.

Thus , the rotational speed increases as When the twirling ice skater brings her arms inward.

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The balloon carries approximately 3.23 x 10^13 excess electrons.

To determine the number of excess electrons on the balloon, we need to use the elemental charge and the charge on the balloon.

The elementary charge, denoted e, is the charge carried by a single electron and has a magnitude of approximately 1.6 x 10^-19 coulombs.

The charge on the balloon is given as -5.16 nC (a negative charge indicates an excess of electrons).

To calculate the number of excess electrons, we can divide the charge on the balloon by the elementary charge:

Number of excess electrons = (balloon charge) / (elemental charge)

Number of excess electrons = (-5.16 nC) / (1.6 x 10^-19 C)

Calculation of this distribution:

Number of excess electrons ≈ -3.23 x 10^13 electrons

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Answer:

Paralympic swimming is an adaptation of the sport of swimming for athletes with disabilities. Paralympic swimmers compete at the Summer Paralympic Games and at other sports competitions throughout the world. The sport is governed by the International Paralympic Committee.

Answer:

Yeah  I think you're right

Explanation:

Because every obj is in motion till acted upon by a force(the branch)

Answer:

as we know

p=1/f

p=1/-40m

p=  -0.025d

you have written the unit of focal length wrong it is the unit of power

please mark as brainliest plzzzzzzzzzz

The development of our current model of the atom evolved over centuries, starting with the ancient Greeks' conceptualization of the atom as an indivisible particle.

Around the fifth century BCE, the Greeks became the first people to put forth the idea of the atom. Democritus and other philosophers proposed the idea that matter is made up of tiny, indivisible pieces called atoms, but there was no experimental support for this theory at the time. Although it survived for centuries, this idea did not significantly change until the 19th century.

Scientific developments in the 19th century led to a deeper comprehension of atoms. With notable contributions from Michael Faraday's work on electromagnetic induction and Benjamin Franklin's electricity tests, scientists discovered the presence of electrical charges.

Groundbreaking investigations that transformed our understanding of the atom took place in the early 20th century. The electron, a negatively charged particle inside the atom, was discovered in 1897 as a result of J.J. Thomson's cathode ray tube studies. Atoms are shown to have a small, dense, positively charged nucleus that is around by negatively charged electrons in a large empty region by Ernest Rutherford's gold foil experiment in 1911.

The Rutherford model, sometimes known as the planetary model, was created in response to the discovery of the nucleus. This model, however, encountered problems since it was unable to explain the stability of atoms and the behavior of electrons. Researchers like Werner Heisenberg and Erwin Schrödinger made significant contributions to the development of quantum mechanics in the 1920s and 1930s.

The wave-particle duality and quantum mechanical concepts are both included in the current model of the atom, also referred to as the quantum mechanical model. In orbitals, which are areas of probability where electrons are most likely to be located, it says that electrons exist. Around the nucleus, these orbitals are arranged into energy levels or shells. The behavior of subatomic particles like protons and neutrons, which make up the nucleus, is also taken into consideration by the model.

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The student should perform experiment 1: heat water and record its change in temperature with time.

To study the effect of adding thermal energy to a system, experiment 1 is the most suitable option.

By heating water and recording its change in temperature over time, the student can observe and analyze how the added thermal energy affects the system.

This will provide insight into the relationship between heat and temperature change.

Experiments 2, 3, and 4 are less relevant to the topic, as they involve freezing water (removing thermal energy) or closing circuits (which primarily relate to electrical energy rather than thermal energy).

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Answer:

The history of Asian art includes a vast range of arts from various cultures, regions and religions across the continent of Asia. ... Central Asian art primarily consists of works by the Turkic peoples of the Eurasian Steppe, while East Asian art includes works from China, Japan, and Korea.

The Evolution of Asian Art

History marks the beginning with Hindu and Buddhist art around the 5th century BCE. These ancient religions were largely represented by an introspective way of life, and their followers adorned their temples with elaborately carved walls and stone statues.

To determine the electric field intensity vector at point M on the line passing through two charges q1 and q2 and equidistant from them, and at point N located at 5cm from q1 and 15cm from q2, we need to use the formula for electric field intensity due to point charges.

At point M, the electric field intensity vector is directed along the line passing through q1 and q2, and has a magnitude given by:

E = k |q1 - q2| / (0.1)²

where k is the Coulomb constant.

At point N, the electric field intensity vector is directed towards q1 and away from q2, and has a magnitude given by:

E = k q1 / (0.05)² - k q2 / (0.15)²

To obtain the direction of the electric field intensity vectors, we need to consider the signs of the charges and the relative positions of the points.

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Answer:

False

Explanation:

Rolling friction takes place when an object rolls on the surface. Sliding friction takes place when two surfaces are rubbed against each other. Rolling friction is much less than sliding friction for same pair of bodies. When one body rolls upon another, there is theoretically no sliding or slip between them.

When the temperature rises from 308°C to 2108°C, the length of the rail increases by around 15.12 feet.

The equation for linear thermal expansion is L = L T, where L represents the change in length, T represents the change in temperature, and is the linear expansion coefficient, which varies slightly with temperature.

ΔL = α L (ΔT)

where:

ΔL = the change in length of the rail

α = the coefficient of linear expansion of iron (in units of 1/°C)

L = the original length of the rail

ΔT = the change in temperature

The coefficient of linear expansion of iron is approximately 1.2 x 10^-5 /°C.

We can plug in the given values:

ΔL = (1.2 x 10^-5 /°C) x (700 ft) x (2108°C - 308°C)

ΔL = (1.2 x 10^-5 /°C) x (700 ft) x (1800°C)

ΔL = 15.12 ft

Therefore, the length of the rail when the temperature is 2108°C is:

L + ΔL = 700 ft + 15.12 ft = 715.12 ft

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2Na (s)+Cl₂ (g) → 2NaCl(s) the equation represents a chemical change because it is a synthesis reaction.

When two or more substances (elements or compounds) react to generate a new product, which is a compound with new qualities. They synthesis to create a new material, therefore the name "synthesis reaction."

Synthesis reactions occur when two separate atoms or molecules interact to generate a new molecule or substance. When a synthesis reaction happens, most of the time energy is released and the process is exothermic.

The typical equation for this sort of reaction is A + B → AB. The reaction of sodium (Na) with chlorine (Cl) to form sodium chloride is an example of a synthesis reaction (NaCl).

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The chi-square test assumes that the variables being analyzed are measured at a nominal or ordinal level of measurement.

In statistics, the level of measurement refers to the nature and properties of the data being collected. There are four levels of measurement: nominal, ordinal, interval, and ratio. Nominal and ordinal levels are considered categorical, while interval and ratio levels are considered numerical. The chi-square test is specifically designed for analyzing categorical data, where the observations can be classified into distinct categories or groups. It is used to determine whether there is a significant association or relationship between two categorical variables.

The test calculates the difference between the observed frequencies and the expected frequencies under the assumption of independence between the variables. It compares the observed and expected frequencies using a chi-square statistic and determines the p-value to assess the statistical significance of the association. Therefore, the chi-square test assumes that the variables being analyzed are measured at a nominal or ordinal level because it deals with categorical data and evaluates the relationship between different categories or groups.

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The required magnetic field strength is 1.54×10^-3 T and it must be perpendicular to the plane of the paper and into the paper.

When a charged particle moves through a magnetic field, it experiences a force given by the equation F = qvBsinθ, where F is the force, q is the charge of the particle, v is the velocity of the particle, B is the magnetic field strength, and θ is the angle between the velocity vector and the magnetic field vector.

In this problem, the electron is moving horizontally between the plates, and we want it to pass through the plates without being deflected. This means that the force on the electron due to the electric field between the plates must be equal and opposite to the force on the electron due to the magnetic field.

The force on the electron due to the electric field is given by F = Eq, where E is the electric field strength and q is the charge of the electron. The electric field strength is given by E = V/d, where V is the voltage of the battery and d is the distance between the plates. Substituting the values given in the problem, we get E = 200 V/0.01 m = 2.0×10^4 V/m.

The force on the electron due to the magnetic field is given by F = qvB, where q is the charge of the electron, v is the velocity of the electron, and B is the magnetic field strength. Substituting the values given in the problem, we get F = 1.6×10^-19 C × 1.3×10^7 m/s × B = 2.08×10^-12 B N.

Since the electron is not deflected by the magnetic field, we know that the magnetic force is equal and opposite to the electric force. Therefore, we can equate the two forces and solve for B:

F = Eq

1.6×10^-19 C × 1.3×10^7 m/s × B = 2.0×10^4 V/m × 1.6×10^-19 C

B = (2.0×10^4 V/m × 1.6×10^-19 C)/(1.3×10^7 m/s)

B ≈ 1.54×10^-3 T

The direction of the magnetic field can be found using the right-hand rule. If you point your right thumb in the direction of the electron's velocity (to the right in this case), and your fingers in the direction of the electric field (from positive to negative), then the magnetic field must be directed into the paper (towards you) in order to produce a force that opposes the electric force and allows the electron to pass through the plates without being deflected.

The required magnetic field strength is 1.54×10^-3 T, and it must be perpendicular to the plane of the paper and into the paper.

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Answer:

just awnsered this one your awnser is the the second option

Answer:

answer one

Explanation:

Answer:

B.  10 m

Explanation:

f = v/λ = (20 m/s)λ / (5 m) = 4 Hz    original frequency

1/2(4 Hz) = 2 Hz   half the original frequency

(20 m/s) / λ = 2 Hz

λ = (20 m/s) / (2 Hz) = 10 m

The second wavelength would increase to 10 m

the answer to this problem is 15

Answer:itts 20 15 is incorrect ill show u proof

Explanation:

Given:

The initial value of the current through the circuit is I.

To find:

The current through the circuit after the circuit is changed.

Explanation:

Let us assume that the total voltage supplied by the two batteries to the circuit is V.

And let us assume that the resistance of the bulb is R.

From Ohm's law, the voltage across the circuit is given by,

Thus the current will be,

When the two identical bulbs are connected, the total resistance of the circuit will be R+R=2R.

Thus from Ohm's law, the current through the resistance is given by,

On substituting the equation (i) in the above equation,

Final answer:

The current in the circuit after the circuit is changed is (1/2) I.

Hardness, color , and luster.

But since you can pick one, I would say hardness

Answer:

ductility

Explanation

flattening of a metal to form a sheet

Acceleration = (change in speed)/(time)

Change in speed = (60-15) = 45 km/hr

Time for the change = 30 sec

Acceleration = 1.5 km/hr-sec

Answer:

The cha-cha-cha, is a dance of Cuban origin. It is danced to the music of the same name introduced by Cuban composer and violinist Enrique Jorrin in the early 1950s. This rhythm was developed from the danzón-mambo

Answer:

+9.8m/s^2

Explanation:

The rate of gravity of the object is constant thriughout the surface of the earth.

For falling object, the rate of gravity is positive since the body is coming down (falling)

The rate of gravity is negative if the body is going up

The constant value for acceleration due to gravity is 9.8m.s^2

Since the object is falling, hence the acceleration due to gravity is positive.

Rate of gravity working on the object will be +9.8m/s^2

Answer:

vector because it gives direction

Explanation:

The mass of water in the rectangular vessel can be calculated by multiplying the volume (400 cm³) by the density of water (1000 kg/m³), resulting in a mass of 0.4 kg.

To calculate the mass of the water in the rectangular vessel, we can use the formula:

Mass = Density × Volume

Given that the density of water is 1000 kg/m³ and the volume of the vessel is 400 cm³, we need to convert the volume to cubic meters before calculating the mass.

1 cm³ = 1 × 10^(-6) m³

Volume = 400 cm³ × (1 × 10^(-6) m³/cm³)

= 0.0004 m³

Now we can calculate the mass:

Mass = 1000 kg/m³ × 0.0004 m³

= 0.4 kg

Therefore, the mass of the water in the rectangular vessel is 0.4 kg.

It's important to note that the given information about the square cross-sectional area of length 10 cm is not directly used in this calculation since the volume is already provided. The square cross-sectional area is relevant to determine the volume if it was not given, but in this case, the volume is explicitly given as 400 cm³.

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Supposing that the acceleration of the particle is positive for 0 < t < 8 seconds, the position of the particle at time t will be different from its initial position due to the positive acceleration.

To answer your question about the position of a particle when its acceleration is positive for 0 < t < 8 seconds: When the acceleration of a particle is positive, it means that the velocity of the particle is increasing over time. As the velocity increases, the particle moves a greater distance in the same amount of time, resulting in a change in its position. Therefore, the position of the particle at time t will be different from its initial position due to the positive acceleration.

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