what is the weight in pounds of a 7.0 kilogram bowling ball on earth's surface

The statement is false; horseshoe magnets produce magnetic fields, not electromagnetic energy. Electromagnetic energy is transmitted by waves with electric and magnetic fields, such as light and radio waves.

The statement (true or false) electromagnetic energy is the kind created by horseshoe magnets is false. Horseshoe magnets create magnetic fields due to their permanent magnetic properties, not electromagnetic energy. However, when electric current is used to create a magnet, as in an electromagnet, we can say that the magnetic field is created by electrical energy. On the other hand, electromagnetic energy refers to the energy transmitted by electromagnetic waves, which include light, radio waves, and x-rays. These waves have both electric and magnetic field components and carry energy through space, even in the absence of a physical medium.

To understand this better, consider that fields of force, like the ones that occur in the space around magnets, can carry energy across space. This demonstrates that the electromagnetic waves, which are basically vibrations in the electric and magnetic fields, are capable of transporting energy. So, while horseshoe magnets produce magnetic fields, they are not the source of electromagnetic energy in the way that electromagnetic waves are.

Answer:

C. It moves in an orbit around Jupiter.

Explanation:

Answer:

To help Jaywon and all others out there, the answer is D

Explanation:

Jaywon and I both took the test and that is the answer.

Final answer:

The change in internal energy (ΔE) of the system is 1500 J, calculated using the first law of thermodynamics with the given 5000 J of heat added to the system and 3500 J of work performed by the system.

Explanation:

When considering the first law of thermodynamics, the change in internal energy (ΔE) of a system is determined by the heat added to the system (Q) and the work done by the system on the surroundings (W). The relationship is given by the equation ΔE = Q - W.

In this scenario, the system receives 5000 J of heat and performs 3500 J of work on its surroundings. Applying the first law, we can calculate the change in internal energy:

ΔE = Q - W = 5000 J - 3500 J = 1500 J

Therefore, the change in the system's internal energy is 1500 J.

Answer:

Identify the independent variable and address any confounndations variables

Explanation:

Answer:

The brainliest response is wrong. The correct answer is t= 0.45s.

Explanation:

parallel then perpendicular

In a Longitudinal wave, the direction of the wave motion is parallel to the direction of the energy transfer. The correct blanks are parallel and perpendicular.

Longitudinal wave:

Transverse wave:

Therefore, the correct blanks are parallel and perpendicular.

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The acceleration due to gravity of the body is 4 ms-2.

We define the weight of an object as the product of the mass of the object and acceleration due to gravity. The value of the acceleration due to gravity varies from place to place in the universe.

From the information presented in the question;

W = mg

m =  10 kilograms

W = 40 newtons

g = W/m

g = 40 newtons/10 kilograms

g = 4 ms-2

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Answer: C. potential energy.

Explanation:

C. potential energy.

Water being held back by a dam will immediately rush through once the dam is removed. This is proof of the potential energy possessed by the water.

The being water held back by a dam possesses potential energy.

option C is the correct answer.

What is total energy ?

Total energy of any object under consideration is the sum of potential energy (P.E) and kinetic energy (K.E) and is constant throughout the motion. for example the ball is having maximum potential energy and zero kinetic energy at some finite height and as it is released its K.E increases and is maximum at ground position and P.E decreases and is zero at ground zero level position to have total energy same through out the motion of ball.

It should be noted that :

The energy possessed by a body by virtue of its motion is known as kinetic energy and the energy possessed by a body due to its position or configuration is known as potential energy.

Here, the water being held back by a dam possesses some potential height which implies that water is having Potential energy due to position of water placed away from ground level.

Therefore, water held back by a dam possesses potential energy.

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An electrical insulator has" Electrons tightly bound to its atoms."The correct option is A.

An electrical insulator typically has electrons tightly bound to its atoms. This prevents the electrons from moving freely and thus inhibits the flow of electric current through the material. The lack of mobile electrons is a fundamental property that distinguishes insulators from conductors or semiconductors.

B. more protons than electrons: This option is not true because an electrical insulator can have an equal number of protons and electrons or even more electrons than protons. The balance between protons and electrons does not determine whether a material is an insulator or not.

C. Electrons that freely move: This option is not true for electrical insulators. Insulators are materials that do not conduct electricity easily, and one of the main reasons is that their electrons are tightly bound to their atoms. This lack of electron mobility prevents the easy flow of electric current.

D. Negatively charged ions: This option is not true for electrical insulators in general. Negatively charged ions refer to atoms or molecules that have gained extra electrons and carry a net negative charge. While some insulators may contain negatively charged ions, it is not a defining characteristic of electrical insulators as a whole. The primary characteristic of insulators is the inability to allow the free flow of electrons.

Therefore, The correct answer is option A.

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Answer:

The radius of the roller coaster loop is 6.3 m.

Explanation:

It is given that,  

Time taken by roller coaster, t = 3.1 s

Centripetal acceleration, [tex]a_c=26\ m/s^2[/tex]

Velocity in a circular path is given by :

[tex]v=\dfrac{2\pi r}{t}[/tex]  

Centripetal acceleration, [tex]a_c=\dfrac{v^2}{r}[/tex]

So, acceleration, [tex]a_c=\dfrac{4\pi^2r}{t^2}[/tex]

[tex]r=\dfrac{a_ct^2}{4\pi^2}[/tex]

[tex]r=\dfrac{26\times 3.1^2}{4\pi^2}[/tex]

r =6.3 m

So, the correct option is (A) " r = 6.3 m". Hence, this is the required solution

Answer:

r = 6.32 meters

Explanation:

Given that,

The centripetal acceleration acting on the roller coaster, [tex]a_c=26\ m/s^2[/tex]

Time taken by the car, t = 3.1 s

The centripetal acceleration act on an object when it moves in circular path. Its formula is given by :

[tex]a_c=\dfrac{v^2}{r}[/tex]

v is the velocity of car, [tex]v=\dfrac{2\pi r}{t}[/tex]

[tex]a_c=\dfrac{(\dfrac{2\pi r}{t})^2}{r}[/tex]

On rearranging above equation,

[tex]r=\dfrac{a_ct^2}{4\pi ^2}[/tex]

[tex]r=\dfrac{a_ct^2}{4\pi ^2}[/tex]

[tex]r=\dfrac{26\times (3.1)^2}{4\pi ^2}[/tex]

r = 6.32 meters

So, the radius of the roller coaster loop is 6.3 meters. Hence, this is the required solution.

> What is the power rating?

The power rating can actually be calculated by the product of current and volts. Therefore:

Power = I V

Given that current I = 0.5 A and V = 120 volts, therefore:

Power = (0.5 A) (120 V)

Power = 60 Watts

> How much energy is consumed in 10 minutes

Energy is simply the product of power and time in seconds, therefore:

Energy = Power * time

Energy = 60 Watts * (600 seconds)

Energy = 36,000 Joules

B

Answer:

Your answer would be b 120 n toward the front of the boat

Explanation:

I took this test and got this correct, here's proof

Hope you get a good grade, from a fellow comrade

Answer : The correct option is, (D) 1.4 meters/second

Solution :

Average velocity : It is defined as the displacement per unit time.

Formula used for average velocity :

[tex]v_{av}=\frac{d}{t}[/tex]

where,

[tex]v_{av}[/tex] = average velocity

d = displacement of the particle

t = time taken

Now put all the given values in the above formula, we get the average velocity of the particle.

[tex]v_{av}=\frac{(21-0)m}{15s}=1.4m/s[/tex]

Therefore, the average velocity of the particle is, 1.4 meter/second.

The gas pressure increases as the temperature decreases is an incorrect statement. Option C is correct.

The force applied perpendicular to the surface of an item per unit area across which that force is spread is known as pressure.

It is denoted by P. The pressure relative to the ambient pressure is known as gauge pressure.

When you heat a gas, the molecules get more energy and travel quicker. Cooling the molecules, on the other hand, causes them to slow down, lowering the pressure.

The gas pressure increases as the temperature decreases is an incorrect statement.

Hence,option C is correct.

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Final answer:

The statement that is not true among the provided options is C) The gas pressure increases as the temperature decreases, because according to Gay-Lussac's law, the pressure of a gas should decrease as the temperature decreases when volume is held constant.

Explanation:

The question is asking which statement is not true regarding the behavior of gases, absolute zero, and the Kelvin scale.

Statement A) Absolute zero on the Kelvin scale is -273°C is true, because by definition absolute zero corresponds to -273.15°C, which is rounded to -273°C. This is the temperature where an ideal gas would theoretically reach zero volume.

Statement B) Liquefaction of the gas occurs at approximately -155°C is irrelevant to the correctness without additional gas-specific information, since the liquefaction temperature varies for different gases.

Statement C) The gas pressure increases as the temperature decreases is false. According to Gay-Lussac's law, for a given amount of gas at constant volume, the pressure of a gas is directly proportional to its temperature. Therefore, as temperature decreases, the pressure should also decrease assuming volume is held constant, which is not what the statement suggests.

Statement D) The gas follows a linear relationship between volume and temperature is true for an ideal gas. Figures presented in the information confirm that volume and temperature are directly and positively related for a gas following ideal behavior, with the relationship being linear up until liquefaction.

The not true statement among the options is C) The gas pressure increases as the temperature decreases.

The magnitude of the charge on the plates of a parallel-plate capacitor necessary to establish an electric field of 2.0 x 10^6 V/m, with an area of 0.2 m^2 and plate separation of 0.1 mm, would be 4 x 10^5 C.

In relation to your question about a parallel-plate capacitor, the electric field (E) between the plates is proportional to the surface charge density, which is defined as the charge (Q) on each plate divided by the area (A) of the plate. By determining the charge on each plate, we use the equation E = Q/A. We can rearrange this equation to find the charge Q = E x A. Substituting the given values: Q = 2.0 x 106 V/m x 0.2 m2, gives us a result of Q = 4 x 105 C. Therefore, to obtain an electric field of 2.0 x 106 V/m between the plates of a parallel-plate capacitor, with a plate area of 0.2 m2 and a plate separation of 0.1 mm, the magnitude of the charge on each plate should be 4 x 105 C.

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The magnitude of the charge on each plate of the capacitor should be 3.54 µC.

To determine the magnitude of the charge on each plate of a parallel-plate capacitor given the electric field and other parameters, follow these steps:

Given:

Formulae:

1. Electric Field Relation:

The electric field [tex]\( E \)[/tex] between the plates of a capacitor is given by:

[tex]\[ E = \frac{V}{d} \][/tex]

where [tex]\( V \)[/tex] is the voltage across the plates and [tex]\( d \)[/tex] is the separation between the plates.

Rearranging to find [tex]\( V \)[/tex]:

[tex]\[ V = E \times d \][/tex]

Substituting the given values:

[tex]\[ V = 2.0 \times 10^6 \, \text{V/m} \times 0.0001 \, \text{m} = 200 \, \text{V} \][/tex]

2. Capacitance:

The capacitance [tex]\( C \)[/tex] of a parallel-plate capacitor is given by:

[tex]\[ C = \frac{\varepsilon_0 A}{d} \][/tex]

where [tex]\( \varepsilon_0 \) (the permittivity of free space) is \( 8.854 \times 10^{-12} \, \text{F/m} \)[/tex].

Substituting the given values:

[tex]\[ C = \frac{8.854 \times 10^{-12} \, \text{F/m} \times 0.2 \, \text{m}^2}{0.0001 \, \text{m}} \][/tex]

[tex]\[ C = \frac{1.7708 \times 10^{-12} \, \text{F}}{0.0001} \][/tex]

[tex]\[ C = 1.7708 \times 10^{-8} \, \text{F} = 17.7 \, \text{nF} \][/tex]

3. Charge:

The charge [tex]\( Q \)[/tex] on the capacitor is given by:

[tex]\[ Q = C \times V \][/tex]

Substituting the capacitance and voltage:

[tex]\[ Q = 17.7 \times 10^{-9} \, \text{F} \times 200 \, \text{V} \][/tex]

[tex]\[ Q = 3.54 \times 10^{-6} \, \text{C} = 3.54 \, \text{µC} \][/tex]

Answer: this happens when the atom drops from a higher to a lower energy level

Explanation:

The emission of light from an atom occurs when an electron is from a higher to a lower energy level.

Electrons are negatively charged particles. Atom is the smallest particle of the molecule. Atoms have positively charged particles called protons. The negatively charged particle is called electrons.

The neutral particle is called the neutron. Electrons rotated in the valence shell. The electrons which are in the last shell are called the valence shell. The electrons in the valence shell move from the last shell to the second shell and then emits energy.

Absorption is the process by which an atom transitions from its ground state to an excited state by absorbing energy from its environment.

After absorbing the energy, the electron advances to a higher energy state. Up the opposite process, called emission, the electron releases the excess energy it had taken in and goes back to its ground state.

Therefore, The emission of light from an atom occurs when an electron is from a higher to a lower energy level.

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the right answer is heating a fish tank.