b What is SI and CGs unit of force​

Answer:

have two or more paths

Explanation:

A parallel circuit is one that has two or more paths for the electricity to flow, the loads are parallel to each other.

Explanation:

The object is not moving, because the distance is a constant value regardless of the time value.

Answer:

A) having each person listen to just 1 song instead of 5.

Explanation:

Ravi could accurately use the outcome to compare the hearing capacities of his friends by this experiment if appropriate precautions are observed.

Playing 5 well known songs simultaneously could result to the interference of sounds when each participant moves away from the player. Which could naturally cause the variation in volume of the songs played with respect to the increasing distance.

Therefore, the reliability of the result from this experiment can be increased if each person listen to just 1 song instead of 5 at a predetermined volume. Each participant would be able to focus on hearing a song during the experiment.

The mass of a piece of copper that has volume of 7\(cm^{3}\) is 62.58g.

The element copper (Cu) is a reddish, very ductile metal belonging to Periodic Group 11 that has an exceptional ability to conduct heat and electricity. In nature, copper can be found in its free metallic state.

Given,

Volume = 7 cm^3

we know that,

The density of copper is 8.960g/cm^3 in room temperature.

Density = mass / volume

Mass = Density x Volume

Mass = 8.960 x 7

Mass = 62.72 g

Mass of copper has a volume of 7 cm^3 is 62.72g.

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Answer:

7 1/2m/s/s

Explanation:

37-22=15

15/2=7 1/2

Answer:

3, 4, 1, 2

Explanation:

When a metal charge sphere with 13 excess electrons touches an identical sphere with 17 excess electrons, the number of excess electrons on each sphere after they touch is 15.

The total charge on the system is conserved. Therefore, if the two spheres have the same size and charge, they will each have a charge of 15. This is because the sum of the excess electrons on each sphere is 30. Therefore, if they are evenly divided, each sphere will have 15 excess electrons. :When two objects with excess charge come into contact, the charge is distributed equally among the two objects. Therefore, the final charge on the two objects is the average of the original charge on the two objects.

The total charge remains the same, but it is distributed equally among the two objects.In this case, the two spheres are identical, so they have the same size and charge. Therefore, after they touch, the excess charge is divided equally among the two spheres. The sum of the excess electrons on the two spheres is 30. Therefore, if they are divided equally, each sphere will have 15 excess electrons.

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The combination of frequencies that produce the lowest beat frequency is 10 Hz and 15 Hz. The correct option is C.

To determine the beat frequency, we subtract one frequency from the other and take the absolute value. The beat frequency is the difference between the frequencies involved in the interference pattern created by two sound waves.

Let's analyze each option:

A. 500 Hz and 501 Hz: The beat frequency would be 501 Hz - 500 Hz = 1 Hz.

B. 10 Hz and 20 Hz: The beat frequency would be 20 Hz - 10 Hz = 10 Hz.

C. 10 Hz and 15 Hz: The beat frequency would be 15 Hz - 10 Hz = 5 Hz.

D. 500 Hz and 600 Hz: The beat frequency would be 600 Hz - 500 Hz = 100 Hz.

Therefore, option C (10 Hz and 15 Hz) produces the lowest beat frequency of 5 Hz compared to the other options.

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The period of the pendulum on the surface of Mars, where g = 3.71m/s², would be the same as the period on Earth, 1.70s.  The pendulum on the surface of Mars has a period of roughly 3.31 seconds, according to our calculation of this expression.

A basic pendulum's period is determined by the equation T = 2(L/g), where T is the period, L is the pendulum's length, and g is the acceleration brought on by gravity.

L = (T/(2))2g can be solved for on Earth with a period of 1.70s by rearranging the equation.

Using the same equation and the Mars surface gravity, g = 3.71m/s2, we can now get the period on Mars' surface: T\(_{mars}\) = 2(L/g\(_{mars}\)).

The equation T\(_{mars}\) = 2(((T/(2))2g)/(g\(_{mars}\))) is obtained by substituting the expression for L and the surface gravity of Mars.

T\(_{mars}\) = T(g/g_Mars), to simplify the formula.

T\(_{mars}\) = 1.70s(9.81m/s2 / 3.71m/s) is the result of plugging in the data. The pendulum on the surface of Mars has a period of roughly 3.31 seconds, according to our calculation of this expression.

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The volume of the air that we have from the question is 829 L

The ideal gas equation, also known as the ideal gas law, is a fundamental equation in thermodynamics that describes the relationship between the pressure (P), volume (V), temperature (T), and number of moles (n) of an ideal gas.

We know that;

PV = nRT

P = pressure

V = volume

n = Number pf moles

R = gas constant

T = Temperature

Then;

Number of moles of the air = 1000 g/29 g/mol

= 34.5 moles

Then;

V = nRT/P

V = 34.5 * 0.082 * 293/1

V = 829 L

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The force to the east, acting on the object for 0.050 second, would produce the same impulse is 2 N.

Impulse is defined as a phrase that is used to explain or measure how a force changes an object's momentum over time. The object's change in momentum is equal to the impulse it experiences. The formula is F • t = m • Δv. When two objects collide, an impulse occurs, which both causes and equals the change in momentum.

Impulse=F(△t)—— Standard Force ( change in time)

First, determine the impulse of the item that is being acted upon by a force of 10Nacting for a time of 0.010s.

Then, the impulse, (I), should be equal to 10N(.010s)=0.1kg(m/s).

With a different force, the same impulse is now desired for the same object.

As a result, 0.1kg(m/s)=F(0.050s), F=0.1kg(m/s)/0.050s, and F=2N.

Thus, the force to the east, acting on the object for 0.050 second, would produce the same impulse is 2 N.

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The net force that the bolt exerts on thr sign is 60N, according to the magnitude formula F=MxA.

Given data in the question:

Mass = 20 kg

Length = 3 m long

Force = Mass X Acceleration

Force = 20x3 = 60 N

Magnitude can de defined as "distance or amount" in the perspective of physics. In terms of motion, it generally shows the relative or absolute size, direction, or movement of an object. It is generally employed to describe something's size or scope. Magnitude in physics generally refers to a quantity or quantity of an object. The magnitude scale, which measures an earthquake's size, is actually unchanged by distance from the event. Nevertheless, the strength reflects the level of rocking brought on by an earthquakes at a specific location and diminishes with distances from the epicenter.

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Answer:

Answer:

Einstein's Big Idea homepage. E = mc2. It's the world's most famous equation, but what does it really mean? "Energy equals mass times the speed of light squared." On the most basic level, the equation says that energy and mass (matter) are interchangeable; they are different forms of the same thing.

Explanation:

hope it helps

Answer:

it means energy is equivalent to the product of the mass of an object and the square of the speed of light.

Answer:

the force is 2000

Explanation:

We could derive this , as ;

\(\sf \longrightarrow Work = F s cos\theta \\ \)

\(\sf \longrightarrow Work = (ma)(s)(cos0^o)\\\)

\(\sf \longrightarrow\pink{ Work = m \ a \ s } \dots (i)\)

\(\sf \longrightarrow 2as = v^2 -u^2\)

where the symbols have their usual meaning.

\(\sf \longrightarrow as =\dfrac{1}{2}(v - u)^2\\ \)

Multiplying both sides by m,

\(\sf \longrightarrow mas = \dfrac{m}{2}(v-u)^2 \)

Now from equation (i),

\(\sf \longrightarrow Work = \underbrace{\dfrac{1}{2}mv^2-\dfrac{1}{2}mu^2} \)

Above term on RHS is change in the Kinetic energy , therefore ,

\(\sf \longrightarrow \underline{\boxed{\bf Work = \Delta Energy_{(Kinetic)} }}\)

Answer:

Identify the object to be analyzed. For some systems in equilibrium, it may be necessary to consider more than one object. Identify all forces acting on the object. Identify the questions you need to answer. Identify the information given in the problem. In realistic problems, some key information may be implicit in the situation rather than provided explicitly.

Explanation:

Identify the object to be analyzed. For some systems in equilibrium, it may be necessary to consider more than one object. Identify all forces acting on the object. Identify the questions you need to answer. Identify the information given in the problem. In realistic problems, some key information may be implicit in the situation rather than provided explicitly.

The image that shows an example of the strong nuclear force in action should be considered option d.

The strong nuclear force is known as the  strong force or the strong interaction.

This force is strong when it overcomes the repulsive force that lies between the two positively charged protons where the neutrons and protons should be permitted for sticking together.

Hence, The image that shows an example of the strong nuclear force in action should be considered option d.

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Based on the length of the spring and the mass of the block, the distance the 4.0 kg block can fall before a reversal in direction is 32 cm.

Because energy is conserved, the distance the block can drop can be found as:

Mass x gravity x distance = (1 / 2) x spring constant x distance ²

Spring constant:

= (Mass x gravity)  / distance

= (3 x 9.8) / 12

= 2.45 cm

Distance is:

Mass x gravity x distance = (1 / 2) x spring constant x distance ²

distance = (2 x Mass x gravity) / spring constant

= (2 x 4 x 9.8) / 2.45

= 32 cm

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Answer:

Anaphase

Explanation:

This is because the spindle fibres have shortened and is pulling the chromatids towards the poles of the cell. The chromatids have also separated.

The cell division which is shown in the picture is anaphase. The correct option is C.

Meiosis is divided into two main phases, each with its own set of subphases:

1 Meiosis I:

a. Prophase I: This is the longest and most complex phase of meiosis. During this phase, homologous chromosomes pair up and form bivalents, and crossing over occurs between the homologous chromosomes. The nuclear envelope breaks down, and spindle fibers form from the centrioles at opposite poles of the cell.

b. Metaphase I: During this phase, the homologous chromosomes line up along the metaphase plate, with one chromosome from each homologous pair facing each pole of the cell.

c. Anaphase I: During this phase, the spindle fibers contract and pull the homologous chromosomes towards opposite poles of the cell.

d. Telophase I: During this phase, the chromosomes reach the poles of the cell and the nuclear envelope reforms around each set of chromosomes. The cell then undergoes cytokinesis, resulting in two daughter cells.

2. Meiosis II:

a. Prophase II: During this phase, the nuclear envelope breaks down, and spindle fibers form from the centrioles at opposite poles of the cell.

b. Metaphase II: During this phase, the chromosomes line up along the metaphase plate, with sister chromatids facing opposite poles of the cell.

c. Anaphase II: During this phase, the spindle fibers contract and pull the sister chromatids towards opposite poles of the cell.

d. Telophase II: During this phase, the chromosomes reach the poles of the cell and the nuclear envelope reforms around each set of chromosomes. The cell then undergoes cytokinesis, resulting in four haploid daughter cells.

Meiosis involves two rounds of chromosome segregation, resulting in four haploid daughter cells that are genetically distinct from the parent cell.

Therefore, The correct option is C i.e anaphase.

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Answer:

3N to the right

Explanation:

If you are floating in the solar system at equal distances between Mars which has a small and Jupiter which has a larger mass than Jupiter, the planet has the largest gravitational pull. So the planet which has a larger mass will have a more gravitational pull.

The gravitationally bound system known as the Solar System is made up of the Sun and the asteroids that orbit it. It formed 4.6 billion years ago when a large interstellar molecular cloud gravitationally collapsed. Jupiter holds the lion's share of the system's remaining mass, with the Sun owning the vast majority of it.

Because Jupiter is the largest planet in our solar system, it has the strongest gravity. On Jupiter, you would weigh 2.5 times more than you would on Earth. Everything is drawn to the surface of the planet by the fundamental force of gravity.

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Domestic operations fall under several mission areas, including Homeland Security, Critical Infrastructure Protection, and Community Resilience.

The Homeland Security mission area involves activities that are undertaken to protect the United States and its territories from threats, both foreign and domestic. This includes preventing and responding to terrorist attacks, securing the border, and protecting critical infrastructure. Domestic operations can be an important component of this mission area, as they may involve working with state and local law enforcement agencies to prevent and respond to potential threats.

Critical Infrastructure Protection focuses on safeguarding the essential systems and assets that are necessary for the functioning of our society. These can include everything from power plants and water treatment facilities to financial institutions and transportation networks. Domestic operations may be employed to help ensure the safety and security of these critical assets, through activities such as surveillance, intelligence gathering, and emergency response planning.

Finally, the Community Resilience mission area is concerned with promoting the ability of communities to withstand and recover from all types of hazards and disasters. Domestic operations can play a key role in achieving this goal, by working with local officials and community leaders to develop and implement effective emergency response plans, coordinate resources, and provide support to those in need during times of crisis.

Overall, domestic operations can be an important component of several different mission areas, all of which are focused on ensuring the safety and security of the United States and its citizens. By working together with federal, state, and local partners, these operations can help to mitigate threats, protect critical infrastructure, and promote community resilience in the face of any challenges that may arise.

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Answer:

D. Electromagnetic

Explanation:

1. A vibrating electric charge creates an EM (electromagnetic) wave

2. Transmitting energy from Sun to the Earth would require crossing the vast emptiness of space, which is a vacuum (no medium to propagate longitudinal waves). Hence, this wave is transversal. EM waves are also transversal.

3. EM waves have both an electric and magnetic component, conventionally on the y and z axes, respectively.

4. The speed of this wave does decrease as the medium becomes denser. Take light for example. Light is also an EM wave and, although it does not need a medium to propagate, it still changes its speed depending on which medium it is passing.

Hence, the wave is electromagnetic

Answer:

If the weight and forces are the same, it will result in a balance, i they are different, it will result in an overload in the lower force/mass object, reflecting it to the opposite direction with higher speed.

Explanation:

In accord with Newton's second law of motion, the acceleration of an object is dependent upon both force and mass. Thus, if the colliding objects have unequal mass, they will have unequal accelerations as a result of the contact force that results during the collision.

In a collision between two objects, both objects experience forces that are equal in magnitude and opposite in direction. Such forces often cause one object to speed up (gain momentum) and the other object to slow down (lose momentum).

"Motion is the phenomenon in which an object changes its position with respect to time. Motion is mathematically described in terms of displacement, distance, velocity, acceleration, speed and time."

"Collision, also called impact, the sudden, forceful coming together in direct contact of two bodies. For example, two billiard balls, a golf club and a ball, a hammer and a nail head, two railroad cars when being coupled together, or a falling object and a floor."

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The sonar computers receiving a reflection from the destroyer at a frequency of 19 kilo-hertz can report useful information about the motion of the destroyer. Specifically, the computer can determine the speed and direction of the destroyer based on the frequency shift of the reflected sound waves.

The sonar system works by sending out sound waves, which then bounce off of objects and return to the system. The frequency of the reflected sound waves is affected by the motion of the object that they bounce off of. In this case, the frequency shift of the reflected sound waves at 19 kilo-hertz can help the sonar computer determine the Doppler shift caused by the motion of the destroyer. This information can then be used to determine the speed and direction of the destroyer.
The computer uses the Doppler effect to make this analysis. The Doppler effect refers to the change in frequency of sound waves caused by the motion of the object emitting or reflecting the waves. In this case, the change in frequency of the reflected sound waves can be used to determine the motion of the destroyer.
In summary, the sonar computers can use the Doppler effect to analyze the reflection of sound waves from the destroyer and determine its motion, including its speed and direction.

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Answer:

Multiple Solutions Below:

Explanation:

In the carrier of being a scientist, they often look at scientific data, then they use that data to make a hypothesis for their experiment.

Science is an interesting field that requires a long list of procedures to ensure that everyone is safe, and that it is done in an orderly fashion.

My friends hypothesize about the idea how the badger knows how to build a dam.

At a crime scene, a CSI investigates a substance on the ground, she finds a testable question and ponders to herself about what the substance is and goes to her lab.

In English class, things are not often in bold letters on what they mean, so we have to make an inference about the text to try and decipher what they mean.

Finally,

Science is one of four main subjects taught in school from fifth to twelfth grade, and beyond.

Hope this helps, and I hope it gives you multiple things to pick as the answer! Have a good day!

Answer:

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potential at point A( -776 V)

the potential at point B;( -855 V)

the work done by the electric field on the charge is 198 nJ.

first, we can use Coulomb's law to find the electric field at points A and B due to the two charges:

Electric field at A:

\(E1 = kq1/r1^2\), where k is Coulomb's constant \((9*10^9 Nm^2/C^2),\) q1 is the charge of q1 (+2.4 nC), and r1 is the distance from q1 to A (0.050 m)

\(E2 = k*q2/r2^2\), where q2 is the charge of q2 (-6.5 nC), and r2 is the distance from q2 to A (0.050 m)

The net electric field at A is the vector sum of these two fields:

E_net = E1 + E2

Electric field at B:

\(E1 = kq1/r1^2\), where r1' is the distance from q1 to B (0.080 m)

\(E2 = k*q2/r2^2\), where r2' is the distance from q2 to B (0.060 m)

The net electric field at B is the vector sum of these two fields:

E_net' = E1' + E2'

(a) The potential at point A can be found using the formula:

V_A = kq1/r1 + kq2/r2

where r1 and r2 are the distances from q1 and q2 to A, respectively.

Substituting the given values:

V_A =\((9*10^{9} Nm^2/C^2) * (2.4*10^{-9} C) / (0.050 m) + (9*10^{9} Nm^2/C^2) * (-6.5*10^{-9} C) / (0.050 m)\)

V_A = -776 V

(b) The potential at point B can be found using the same formula as for point A, but with the distances r1' and r2':

V_B = kq1/r1' + kq2/r2'

Substituting the given values:

V_B =\((9*10^{9} Nm^2/C^2) * (2.4*10^{-9} C) / (0.080 m) + (9*10^{9} Nm^2/C^2) * (-6.5*10^{-9} C) / (0.060 m)\)

V_B = -855 V

(c) The work done by the electric field on a charge of 2.50 nC that travels from point B to point A is equal to the change in potential energy of the charge:

ΔU = q * (ΔV)

where q is the charge (2.50 nC), ΔV is the change in potential (V_A - V_B).

Substituting the given values:

\(ΔU = (2.50*10^{-9} C) * (-776 V - (-855 V))\)

ΔU = 198 nJ

Therefore, the work done by the electric field on the charge is 198 nJ.

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