Which statement is most nearly the same as Newton's third law?

A) If the net force acting on an object is zero, it does not accelerate.

B) When one object exerts a force on a second object, the first object exerts an equal force on itself in the opposite direction.

C) Acceleration of an object is proportional to net force divided by mass.

D) When you push on an object, it pushes back just as strongly on you.

Final answer:

OPTION D.

The best representation of scientific laws is that they are factual descriptions of observed phenomena in nature, often expressed through mathematical equations and supported by extensive scientific evidence.

Explanation:

The statement that best represents scientific laws is D. Scientific laws are descriptions of observed phenomena generally accepted as facts. Unlike scientific theories, which provide explanations for phenomena, scientific laws describe the patterns we observe in nature and are often expressed concisely, typically through mathematical equations. A scientific law uses concise language to describe a generalized pattern in nature that is supported by scientific evidence and observed through repeated experiments. An example would be Newton's second law of motion, represented by the equation F = ma, which describes the relationship between force (F), mass (m), and acceleration (a).

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:

C. It moves in an orbit around Jupiter.

Explanation:

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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> 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

the right answer is heating a fish tank.

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.

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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Answer:

Identify the independent variable and address any confounndations variables

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.

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.

Explanation:

It is given that,

Mass of the bowling ball, m = 7 kg

We need to find the weight in pounds of 7 kg bowling ball in pounds. Firstly, we need to find the relationship between kilogram and pound. It is as follows :

1 kilograms = 2.204 pounds

The given mass of 7 kilograms can be converted to pounds by using the unitary method as :

[tex]7\ kilograms=(7\times 2.204)\ pounds[/tex]

7 kg = 15.428 pounds

Hence, the weight of bowling ball is 15.428 pounds. Hence, this is the required solution.

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:

8.45m/s^2

Explanation:

a = m2g / m1+m2

63 + 10 = 73 kg

63*9.8 / 73 = 8.45m/s^2

The magnitude of the acceleration of the block when the other block is released would be 8.466 m/s²

Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.

The mathematical expression for Newton's second law is as follows

F = ma

As given in the problem A 10.0 kg block on a table is connected by a string to a 63 kg mass, which is hanging over the edge of the table. assuming that frictional forces may be neglected,

The force responsible for the motion is only due to the hanging mass of 63Kg  because of the gravitational pull of the earth

F = mg  

  = 63×9.81 N

  =618 N

the acceleration would be the same for both the block as both are connected by a string

a = F/(m₁+m₂)

a = 618/(63+10)

a = 8.466 m/s²

Thus , The magnitude of the acceleration of the block when the other block is released would be 8.466 m/s²

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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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