to learn to apply the concept of current density and microscopic ohm's law. a slab of metal of volume v is made into a rod of length l. the rod carries current i when the electric field inside is e.

Answer:

A. Capitalist economy

Explanation:

The United States is a capitalist economy. Hope this helps, thank you !!

Answer:

You are correct the answer is D

Brainliest will be appreciated thank you!

To investigate the relationship between surface-type and frictional force, the steps to be followed are Identify the variables, Select a range of surface types, Prepare the materials, Set up the experiment, Conduct trials, Analyze data and Draw conclusions.

Here's a step-by-step guide:

1. Identify the variables: In this case, the independent variable is the surface-type, while the dependent variable is the frictional force.

2. Select a range of surface types: Choose various surface types, such as smooth (e.g., glass), moderately rough (e.g., wood), and rough (e.g., sandpaper) to test the relationship.

3. Prepare the materials: Gather a flat, rectangular object to slide across the surfaces, a spring scale or force sensor to measure the frictional force, and a device to ensure consistent angle and speed for each trial.

4. Set up the experiment: Lay each surface-type horizontally on a sturdy table. Attach the spring scale or force sensor to the flat object and ensure that the pulling angle and speed remain consistent for each trial.

5. Conduct trials: For each surface type, pull the flat object using the spring scale or force sensor at a consistent speed and angle, and record the frictional force measurements. Perform multiple trials for each surface to account for any discrepancies and improve the accuracy of your results.

6. Analyze data: Calculate the average frictional force for each surface type and create a table or graph to display your findings.

7. Draw conclusions: Based on the data, determine if there's a relationship between surface-type and frictional force. Observe any trends in your results, such as an increase in frictional force with rougher surfaces.

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Answer:

They cause heat to flow from the system to the surroundings.

Answer:

probaby not

Explanation:

you might get thrown in jail tho

Electron shielding reduces the effective nuclear charge.

Electron shielding refers to the phenomenon where inner electron shells in an atom partially block the attractive force of the positively charged nucleus on the outer electrons. This shielding effect arises from the repulsion between negatively charged electrons. As a result, the outer electrons experience a reduced effective nuclear charge, which is the positive charge felt by an electron due to the nucleus.

The shielding effect can be explained by considering the electron distribution in an atom. Inner electrons occupy regions closer to the nucleus, creating a barrier that diminishes the electrostatic attraction between the outer electrons and the nucleus. This reduction in the effective nuclear charge affects various atomic properties, such as atomic size and ionization energy.

the concept of electron shielding and its impact on atomic properties, including atomic radius and ionization energy. Understanding electron shielding helps in explaining trends and behaviors observed in the periodic table.

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Levon Ter-Petrosyan won the majority of the votes and became the first president of independent Armenia.

Answer:

Explanation:

chemical energy  :)   yay...  we can live  :D  

Answer:

1 kJ

Explanation:

By definition of work, \(W = \vec F \cdot \vec x = |\vec F| |\vec x| cos\angle Fx\). Let's replace the values: \(W = 100N\cdot 20m \cdot cos 60 = 1000 J\)

Deposition is the geological process in which sediments, soil and rocks are added to a landform or landmass

Answer:

the noun of deposition is the action of deposing someone, especially a monarch.

Answer:

Friction

Explanation:

In the event that the power is applied toward the path inverse to the bearing of movement, it goes against the movement of the item and henceforth the speed of the article diminishes.

Then, in the event that the thing continues to move one way, grinding will dominate and go about as the moving variable.

So, the moving factor would be friction.

Answer:

The standard in the United States is 120-volt and 60Hz AC electricity.

Explanation:

Brainliest, please?

option A is correct✔✔☑

Answer:

A. 119kg

B.0.53m from head

Explanation:

A. Weight = 730+340.

=1170N

F= Wg

W = 1170/9.8

= 119kg

If x is distance from head to CG then 1.92–x is the other distance.

Moments must equal

470x = 330(1.89–x)

470x = 623.7 – 330x

1170x = 623.7

x = 0.53m from head

Answer:

nothing

Explanation:

bocouse of darkness

Answer:

1. Nuclear fusion does not generate radioactive nuclear wastes as nuclear fission does.

2. Nuclear fusion cannot lead to disastrous powerplant explosions as nuclear fission does.

3. More energy is generated during nuclear fusion than in nuclear fission.

Explanation:

Nuclear fusion involves the combination of lighter atoms such as hydrogen to form a heavier nucleus, in the process producing a tremendous amount of energy.

Nuclear fission on the other hand involves splitting a heavy nucleus into two lighter nuclei, releasing energy in the process.

Nuclear fusion and fission release a tremendous amount of energy using radioactive material as a fuel.

Nuclear fusion is a reaction that occurs when two nuclei merge to form a larger nucleus and release a massive quantity of energy.

The breaking of two nuclei into smaller nuclei is known as nuclear fission. Nuclear fission also releases a significant amount of energy.

The key is how tightly the nucleons in a nucleus are bound together. The surplus energy will be released if a nuclear reaction produces nuclei that are more closely bonded than the originals. The most securely bound atomic nuclei are found to be around the size of iron-56. Thus,

When a nucleus significantly larger than iron is broken into tiny bits, energy is released since the smaller fragments have lower energy.

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Answer:

4

Explanation:

1/.25 =4

Answer:

45 degrees

Explanation:

a projectile travels the farthest when it is launches at the angle of 45 degree.

Answer:    

Explanation:

When two waves of similar frequency arrive at the same point and superimpose, they alternately constructively and destructively interfere. This alternating is known as a beat because it produces an unpleasant pulsing sound

Technology and science support one another's advancement. New technologies are developed using scientific knowledge. New technology frequently enable scientists to examine nature in novel ways and generate novel findings.

By introducing a new area of scientific inquiry, a change in technology can have an impact on our understanding of science. For instance, the development of the microscope allowed biologists to study species that were invisible to the eye, resulting in the development of the field of microbiology.

Building new technologies with the use of scientific information frequently leads to new observations being made about the world, which in turn leads to the development of even more scientific knowledge.

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Answer:

there is no drag in a vacuum (why is father in a vaccum)

Explanation:

there is nothing to hit and slow the object other than gravity like dust or air

The kinetic energy of a car with a mass of 1050kg and a velocity of 5m/s will be 13,125 joules or 13,125 kg⋅m2⋅s−2.

As we know, the formula to find the kinetic energy in a system is \(1/2 m v^{2}\) where m is the mass of the system and v is the given velocity at the moment. So , by putting the given data in the equation, we get :

⇒\(1/2mv^{2}\)

⇒1/2 x 1050 x 5 x 5

⇒525 x 25

⇒13,125

∴ The Kinetic energy of the car will be 13,125 Joules where joule is the SI unit of energy.

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Answer:

Density=mass/volume

so, volume=mass/density

We are given that an object falls with an acceleration of -6 miles/h/s. To determine the initial velocity we will use the following motion:

Where:

Now, we solve for the initial velocity by subtracting "at" from both sides:

Now, we plug in the values:

Now, we solve the operations:

Therefore, the initial velocity is 50 mi/h.

The value of force is 1.7 × 10⁻³ N, with the direction opposite to that of the bat's motion.

When an object collides with another object, they exchange energy. For example, a baseball and bat collision or a car collision. When two objects collide, the force of the collision has to be equal on both sides of the collision according to Newton's Third Law. So, to find the value of force, we will apply the equation:

F = ΔP / ΔT

where F is the force, ΔP is the change in momentum, and ΔT is the time of collision. The equation represents the impulse momentum theorem.

Now, let's apply the given values to the above equation.

Final momentum (p2) = mass × final velocity (v2)

p2 = 0.15 kg × (-50 m/s)

p2 = -7.5 kg.m/s

Initial momentum (p1) = mass × initial velocity (v1)

p1 = 0.15 kg × (40 m/s)

p1 = 6 kg.m/s

Change in momentum (ΔP) = p2 - p1

ΔP = -7.5 kg.m/s - 6 kg.m/s

ΔP = -13.5 kg.m/s

Time of collision (ΔT) = 8.0 × 10³ s

Now, putting the values of ΔP and ΔT in the equation of impulse momentum theorem, we get:

F = ΔP / ΔT

F = -13.5 kg.m/s ÷ 8.0 × 10³ s

F = -1.7 × 10⁻³ N

Thus, the value of force is 1.7 × 10⁻³ N, with the direction opposite to that of the bat's motion.

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Answer:

473.8miles/hr

Explanation:

Given parameters:

Time of flight  = 4hrs

Distance traveled  = 1895miles

Unknown:

Speed of the plane  = ?

Solution:

Speed is the rate of distance covered per unit of time.

It is expressed as:

        Speed  = \(\frac{distance}{time}\)  

So;

  Speed  = \(\frac{1895}{4}\)   = 473.8miles/hr

0.000709 m , 0.00122 m is the radii of the first and second bright fringes in the reflected light.

In works of art, light that reflects off one thing and strikes a different object is known as reflected light. You are working with light no matter what topics you draw or paint or how you draw or paint them. How three-dimensional your drawing appears depends on how well you depict light.

R = Radius of curvature = 2.9 m

λ =  Wavelength = 559 nm = 546×10⁻⁹ m

Radius of bright fringe

r = \(\sqrt{(m+0.5)}\)λr

The first bright fringe indicates that m = 0.

r = \(\sqrt{(0.5*559)*10^-9*1.8}\) = 0.000709m

At m = 1, first-second fringe implies.

r = \(\sqrt{(1+0.5)559*10^-9*1.8}\) = 0.00122m

∴The initial brilliant fringe has a radius of 0.000709 m. The second brilliant fringe has a radius of 0.00122 m.

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We have that for the Question "Describe what a high and low frequency electromagnetic wave look like:" it can be said that

From the question we are told

Describe what a high and low frequency electromagnetic wave look like:

Generally the equation for the frequency  is mathematically given as

\(f=\frac{1}{t}\\\\and\\\\f=\frac{v}{\lambda}\\\\\)

Therefore

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Answer:

Diameter of Wire = 4.5 mm

Explanation:

First, we need to find the fractional part of the reading. The fractional part o the reading can be given by the following formula:

Fractional Part = Circular Scale Reading x Least Count

where,

Circular Scale Reading = 50

Least Count = 0.01 mm

Therefore,

Fractional Part = (50)(0.01 mm)

Fractional Part = 0.5 mm

Now, the diameter of the wire can be given by using the following formula:

Diameter of Wire = Linear Scale Reading + Fractional Part

Diameter of Wire = 4 mm + 0.5 mm

Diameter of Wire = 4.5 mm

The Louisiana Purchase eventually doubled the size of the United States, significantly strengthened it militarily and strategically, spurred the country’s westward expansion, and established the federal Constitution’s doctrine of implied powers.

Prior to 1803 there had been considerable Old-World interest in the Louisiana Territory. France had gained authority over the river and ownership of the majority of the Mississippi valley thanks to explorations and sporadic colonies in the 17th and 18th centuries.

The greatest land deal in American history was the Louisiana Purchase, when the United States acquired the western half of the Mississippi River basin from France in 1803 for less than three cents per acre, or 828,000 square miles (2,144,520 square kilometers).

The acquisition increased the United States’ size by twofold.

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