example: three resistors, 60 ????, 30 ????, and 20 ????, are connected in parallel across a 90 v battery. (a) find the current through each branch of the circuit. 90 v

Advandages:

1. Every unit that is connected in a parallel circuit gets equal amount of voltage.

2. It becomes easy to connect or disconnect a new element without affecting the working of other elements.

3. If any fault happened to the circuit, then also the current is able to pass through the circuit through different paths.

Disadvantages:

1. It requires the use of lot of wires.

2. We cannot increase or multiply the voltage in a parallel circuit.

3. Parallel connection fails at the time when it is required to pass exactly same amount of current through the units.

Answer:

24

Explanation:

24.305 of atomic mass has 12 neutrons

Answer:

The ball takes \($t=1 \cdot 917sec$\) to hit the ground.

Explanation:

• The second equation of motion represents the total distances travelled by an object in a time interval of \($\Delta t$\) with an initial speed of \($u$\) and acceleration \($a$\).

• To find the time, ball takes to hit the ground, use the formula: \($$s = ut + \frac{1}{2}a{t^2}$$\)

Where, \($t$\) is time, \($u$\) is initial velocity, \($a$\) is acceleration and\($s$\) is displacement.

• In this case, \($a = g = 9 \cdot 8m/se{c^2}$\).

• Placing the value of the given initial velocity, \($u=0cm/s$\) and displacement,\($s = 13m$\) in the above formula.

\(& \therefore s = ut + \frac{1}{2}g{t^2} \\& \Rightarrow 13 = 0 \cdot t + \frac{1}{2} \times 9 \cdot 8 \times {t^2} \\\)

\(& \Rightarrow 13 = 4 \cdot 9{t^2} \\& \Rightarrow {t^2} = \frac{{13}}{{4.9}} \\& \Rightarrow t = 1 \cdot 917sec \\\end{align}\]\)

• Hence, ball takes \($t=1 \cdot 917sec$\) to hit the ground.

Learn more about second equation of motion here:

https://brainly.com/question/19030143

The dielectric constant of the unknown material is 2.3.

Dielectric constant is referred as a relative permittivity or amount of charge required to produce one unit of electric flux in a given medium.

Given the speed of light in vacuum c =3 x 10⁸ m/s and the speed of light through an unknown material v = 1.98 x 10⁸ m/s.

The dielectric constant is related to the velocity by the following relation,

v = c/√K

Rearranging for dielectric constant, we get

K = (c/v)²

Substitute the value into the expression ,we get

K =(3 x 10⁸ / 1.98 x 10⁸)²

K = 2.3

Thus, the dielectric constant of the unknown material is 2.3.

Learn more about dielectric constant.

https://brainly.com/question/13265076

#SPJ1

Answer:

C. microscope

Explanation:

A simple microscope is magnifying glass, an ordinary double convex lens having a short focal length that produces virtual and erect image.

No, the elastic potential energy stored in the pole of a pole vaulter is not the only type of potential energy involved in pole-vaulting.

In pole-vaulting, there are multiple forms of potential energy involved. While the elastic potential energy stored in the pole plays a crucial role, other forms of potential energy include gravitational potential energy and kinetic energy.

1. Elastic Potential Energy: The pole used in pole-vaulting is typically made of flexible materials, such as fiberglass or carbon fiber, which store elastic potential energy when bent or compressed. This stored energy is then released, propelling the vaulter upwards.

2. Gravitational Potential Energy: As the vaulter reaches the highest point of their vault, they have gained gravitational potential energy due to their increased height above the ground. This potential energy is converted into other forms of energy as the vaulter descends.

3. Kinetic Energy: Throughout the vaulting process, the vaulter's body also possesses kinetic energy, which is the energy of motion. The vaulter's initial speed and subsequent acceleration contribute to their kinetic energy, allowing them to gain momentum and clear the bar.

Therefore, while the elastic potential energy stored in the pole is an important component, there are other forms of potential energy involved in pole-vaulting, namely gravitational potential energy and kinetic energy.

To learn more about pole-vaulting , visit :

brainly.com/question/17429689

#SPJ11

Answer:

The atoms ,molecules, or compound present at the start of a chemical reaction that parcitipate in the reaction are the reactants.

Explanation:

The chemical reaction is the way in which one substance reacts against another. So, a chemical reaction consists of the transformation of some substances into others, that is, the process of arranging atoms and bonds when chemical substances come into contact.

In a chemical reaction, the initial substances are called reactants, while the new substances obtained are called products.

So, the atoms ,molecules, or compound present at the start of a chemical reaction that parcitipate in the reaction are the reactants.

Answer:

= 4000N/m or 4000J

Explanation:

Work done = force × distance

= 200 N × 20 m

= 4000N/m or 4000J

The two groups adapted to anaerobic conditions and containing modified mitochondria lacking DNA are option ediplomonads and parabasalids.

Diplomonads and parabasalids are both groups of protists that have adapted to anaerobic conditions, meaning they can survive in environments with little to no oxygen. These organisms possess modified mitochondria known as mitosomes, which are reduced versions of mitochondria that lack DNA.

Diplomonads, such as Giardia lamblia, are flagellated protists that commonly inhabit the intestines of vertebrates, including humans. They are adapted to anaerobic environments and have simplified mitochondria known as mitosomes, which are involved in metabolic processes but lack DNA.

Parabasalids, including Trichomonas vaginalis, are also flagellated protists adapted to anaerobic conditions. They possess specialized organelles called hydrogenosomes, which are modified mitochondria involved in energy production. Like mitosomes, hydrogenosomes lack DNA.

Both diplomonads and parabasalids have evolved these modified mitochondria to meet their energy requirements in anaerobic environments where traditional aerobic respiration is not feasible. Therefore option e is the correct option.

learn more about diplomonads here:

https://brainly.com/question/33600658

#SPJ11

THE COMPLETE QUESTION IS:

Which of the following are two groups that are adapted to anaerobic conditions and contain modified mitochondria that lack DNA?

A.dinoflagellates and diatoms

B.chlorophytes and radiolarians

C.apicomplexans and forams

D.gymnamoebas and slime molds

E- diplomonads and parabasalids

Answer:

Correct, is there another part to the question?

Answer:

claro  u es iq

Explanation:

The first statement is true; if dim V = p and if S is a linearly dependent subset of V, then S contains more than p vectors.

The second statement is false; if S spans V and if T is a subset of V that contains more vectors than S, then T is linearlyly dependent.

Explanation:

If S is linearly dependent, then there is at least one vector in S that can be written as a linear combination of the remaining vectors. If this is the case, then this vector is redundant, and it can be removed from S. This means that we can repeat the process until we have removed all the redundant vectors from S.So, let us assume that S is a linearly dependent subset of V such that dim V = p, then we have the following:dim (span S) < dim Vp. So S contains more than p vectors.

The  second statement is false; if S spans V and if T is a subset of V that contains more vectors than S, then T is linearly dependent.

Explanation:Let us assume that S spans V and if T is a subset of V that contains more vectors than S, then T must have a vector not in S. We can add this vector to S to get a set that contains all the vectors in T. The resulting set is linearly dependent because it contains more vectors than S, which is known to span V.

Learn more about vector space at https://brainly.com/question/30531953

#SPJ11

Answer:

I'm pretty sure it's A. long time, small force.

As the frequency of a wave on the electromagnetic spectrum decreases, the wave energy decreases as well.

The electromagnetic spectrum consists of different types of waves, such as radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Each type of wave has a specific frequency and wavelength.

Energy in a wave is directly proportional to its frequency.

Higher frequency waves carry more energy, while lower frequency waves carry less energy.

When the frequency decreases, the energy of the wave decreases proportionally.

This means that as a wave moves from higher frequency regions (such as gamma rays or X-rays) to lower frequency regions (such as radio waves), its energy decreases.

This phenomenon is due to the wave-particle duality of electromagnetic radiation.

Each wave is made up of individual particles called photons.

Higher frequency waves have photons with more energy, while lower frequency waves have photons with less energy.

Therefore, when the frequency decreases, the energy of the wave decreases as well.

For more questions on electromagnetic spectrum

https://brainly.com/question/10044199

#SPJ8

To parameterize the plane through the point (3, -4, 4) with the normal vector (-2, 4, 3) gives (14 + 2t - 4s)/3

Explanation:-

To parameterize the plane through the point (3, -4, 4) with the normal vector (-2, 4, 3),

we can use the point-normal form of the equation of a plane.

The equation of the plane is given by:

r · n = p · n

where, r is the position vector of any point on the plane, n is the normal vector to the plane,  and p is the position vector of a point on the plane.

Using the given point and normal vector,

we get:

(x, y, z) · (-2, 4, 3) = (3, -4, 4) · (-2, 4, 3)-2x + 4y + 3z

= -14

We can now express z in terms of x and y as follows:

z = (14 + 2x - 4y)/3

Using the parameter t,

we can write:

x = t and y = s

Substituting into the equation above,

we get:

z = (14 + 2t - 4s)/3

So, a parameterization of the plane is given by:

x = t and y = s and z

= (14 + 2t - 4s)/3

Know more about Vector here,

https://brainly.com/question/30958460

#SPJ11

The statement when a star finally runs out of hydrogen to fuse in its central core is true.

When a star exhausts its hydrogen fuel in its central core, it undergoes significant changes in its structure and behavior. This phase is typically known as stellar evolution. The exact sequence of events depends on the mass of the star.

For lower-mass stars like our Sun, when hydrogen fusion in the core ceases, the core contracts under gravity's pull while the outer layers expand, resulting in a red giant phase. In this phase, the star starts fusing helium into heavier elements in its core.

For more massive stars, after hydrogen fusion ends in the core, the core contracts and heats up. This can ignite hydrogen fusion in a surrounding shell around the core, causing the star to expand into a red supergiant.

Eventually, these massive stars can undergo additional fusion reactions, forming heavier elements such as carbon, oxygen, and even up to iron in their cores.

In both cases, once a star exhausts its hydrogen fuel in the central core, its subsequent evolution and fate depend on its mass and various factors, including the balance between gravity and internal pressure, which governs its subsequent fusion processes and stellar death.

To know more about central core refer here:

https://brainly.com/question/30778314

#SPJ11

Answer:

Parisian Scoop

Pocket thermometer

Pasty Bag

sifter

chinois

Rolling Pin

Immersion Blender

Chocolate tempering machine

Robot Coupe

Steam Jacketed kettle

marble table

commercial dough sheeter

Explanation:

Really it could differ dependent on model variety of each item

Pulsars are thought to be a group of rapidly rotating neutron stars.

A neutron star is the dense remnant left behind after the collapse of a massive star during a supernova explosion. Neutron stars are incredibly compact and contain a high concentration of neutrons. They have masses typically around 1.4 times that of the Sun but are compressed into a sphere with a radius of only about 10 kilometers.

When a massive star undergoes a supernova explosion, the core collapses under gravity, causing the protons and electrons to merge and form neutrons. This collapse results in a highly dense neutron star with a strong gravitational field.

Pulsars, a type of neutron star, are characterized by their rapid rotation and the emission of beams of electromagnetic radiation that are observed as regular pulses of radiation. These pulses occur at precise intervals and are detectable across a range of wavelengths, from radio waves to X-rays.

The emission of radiation from pulsars is believed to be caused by two main factors:

1. Rotation: Pulsars rotate rapidly, often spinning hundreds of times per second. As the neutron star rotates, it emits beams of radiation from its magnetic poles. These beams are not aligned with the rotational axis, resulting in a lighthouse-like effect where the beams sweep across space. When the beams pass through Earth's line of sight, we detect them as regular pulses of radiation.

2. Magnetic Field: Pulsars possess extremely strong magnetic fields, typically billions of times stronger than Earth's magnetic field. This powerful magnetic field interacts with the charged particles surrounding the pulsar, causing them to emit radiation in the form of radio waves, X-rays, and gamma rays.

Accreting white dwarfs, black holes, and unstable high-mass stars are not typically associated with pulsars. Accreting white dwarfs are white dwarf stars that accrete material from a companion star, black holes are formed from the collapse of massive stars, and unstable high-mass stars are stars that undergo various stages of stellar evolution before potentially exploding as supernovae.

In summary, pulsars are believed to be rapidly rotating neutron stars with strong magnetic fields that emit beams of radiation as they rotate. Their distinct pulsing behavior makes them observable as regular pulses of electromagnetic radiation across different wavelengths.

To know more about Pulsars, please click on:

https://brainly.com/question/32220772

#SPJ11

Answer:

27v

Explanation:

10 ohm resistor is the first in series. so it will have the entire current.

voltage across 10ohm resistor = 10*2.7= 27v

Answer:

Objective(s): In your own words, what was the purpose of this lab?

The purpose of this lab is to get us familiar with the physical properties of different types of materials that are used for building.

Hypothesis: In this section, include the if/then statements you developed during your lab activity. These statements reflect your predicted outcomes for the experiment.

If we use clay brick to build the roof of the house, then the temperature inside the house will remain cooler.

If we use wood to build the walls and floors of the house, then the temperature inside the house will remain cooler.

If we use nickel to bring electricity into the home, then it will allow electricity to flow into the home at a faster rate.

If we use iron to construct the latches on the windows and doors, then the magnetism will keep the latches secure.

Procedure: The materials and procedures are listed in your virtual lab. You do not need to repeat them here. However, you should note if you experienced any errors or other factors that might affect your outcome.

Using the summary questions, clearly define the dependent and independent variables of the experiment.

Data: Record the results of each of your physical property tests in the table below.

Wood _  3/10 _0 _0.12 W/(m·K)  _0 S/m _ 4 g/cm3

Clay Brick _ 2/10 _1 _0.6 W/(m·K) _ 0 S/m _ 5.88235 g/cm3

Iron _ 4/10 _10 _80 W/(m·K)  _1x107 S/m  _9.09091 g/cm3

Aluminum_ 7/10 _ 0  _235 W/(m·K) _ 3.8x107 S/m _ 6.66667 g/cm3

Copper _ 6/10 _0 _400 W/(m·K)  _3.8x107 S/m  _9.52381 g/cm3

Nickel _ 5/10 _7 _ 91 W/(m·K)  _1.4x107 S/m  _9.43396 g/cm3

Conclusion: Your conclusion will include a summary of the lab results and an interpretation of the results. Please answer all questions in complete sentences using your own words.

In this, I investigated the effect that different types of physical properties had on six different materials. I also investigated which materials would be the best to build a house.  

     2. What building material did you use to build your house? Did your results support or fail to support your hypotheses?

For the roof of my house, I used clay bricks. For the walls and floors of the house, I used wood. To bring electricity into the home I used nickel. To construct the latches on the windows and doors, I used iron. My results supported my hypotheses because clay bricks and wood had the lowest thermal conductivity rates, nickel had the second highest electricity conductivity rate, and iron had the highest magnetism rate.    

      3. What were the densities of the materials you chose for the walls and floor for the home in Tiny World? Why do you think a building material's density is important when building homes or architectural structures?

The density of the material I chose for the walls and floors for the home in Tiny World was 4 g/cm3 (Wood). I think a buildings material density is important when building homes or architectural structures because in order for that structure to stay stable the materials that are used must be dense. If the materials are not dense, the structure would most likely collapse if it is placed under too much pressure.

      4. Why wouldn’t you choose wood or aluminum for the latches on your house?

I wouldn’t choose wood or aluminum for the latches on my house because neither of those two materials are magnetic.

    5. Which material has the highest thermal conductivity? Which material has the highest electrical conductivity? Explain why thermal and electrical conductivity is so high with this material.

Copper has the highest thermal conductivity. Aluminum and copper have the highest electrical conductivity. Thermal conductivity is high in copper because copper is a very thin type of material, and this allows heat to pass through it easily. Electric Conductivity is high in both aluminum and copper because they are both a very thin type of metal and because they are both so thin, electricity will pass through them quickly.  

I'm sorry if any of the answers are wrong, this was just assigned to me and my teacher hasn't graded it yet.

The elements which are in the unknown according to the diagram given is He and is therefore denoted as option C.

This is referred to as a type of graph which shows the intensity of light being emitted over a range of energies and it varies with properties such as wavelength or frequency. When light is passed through a prism, band of colors are usually observed which signifies light spectrum with the plural being spectra.

In the diagram given , the element He and the unknown have the most similar spectra observed as a result of the lines which fall in almost the same range and place and it makes it the most likely component of the mixture of unknown gases.

This is therefore the reason why option C was chosen as the most appropriate choice.

Read more about Spectra here https://brainly.com/question/19042165

#SPJ1

Answer:

The right answer is c because when we heat solid object the molecule will start lose attraction on object

Explanation:

brain list

Answer:

infiltration decreases and runoff increase

Explanation:

The changes in surface water movement which is likely to occur when vegetation is removed from the side of a hill is infiltration decreases and runoff increases.

Surface overflow is the flow of water which take place on the surface of the ground. The extra water due to rain or flood arises on the ground or at the surface, flows in the nearby lacks or ponds.

Now if the vegetation is removed, great amount of water started to come from the hills. The result of it, more water started to overflow on the land of the surface. This way the runoff increases.

Infiltration is the way by which the ground level water enters into the soil of the earth.

Now, if the vegetation is removed, a lot of amounts of water started to come from the hills. This excess amount of water does not enter in to the soil of the earth.

The changes in surface water movement which is likely to occur when vegetation is removed from the side of a hill is infiltration decreases and runoff increases.

Learn more about the Infiltration here;

https://brainly.com/question/15362770

Answer:

slowing down.

Explanation:

acceleration points in the same direction as the velocity, the object will be speeding up. And if the acceleration points in the opposite direction of the velocity, the object will be slowing down

NOT an event horizon is its binary counterpart, which transports matter to it.

To refer to the item or person that is the target of an action, we typically use the word "object." Alternatively, the recipient. In a sentence, a verb's action is transferred to a noun or pronoun as a direct object. It typically responds to the what- or whom-questions regarding the verb.

Icons, cursors, buttons, sprites, and other complicated artworks can be made from a collection of simple visual pieces called image objects. Without having to sketch a single pixel, Image Objects let you express creativity.

To know more about Object visit:

https://brainly.com/question/12569661

#SPJ

2.1.2) When temperature decreases, the material may decrease in size, 2.2) If a material is allowed to change in size, it experiences compression stress.

2.1.2 Temperature decrease: When the temperature of a material decreases, one possible effect is that the material may decrease in size. This happens because when the temperature decreases, the molecules in the material slow down and move closer together.

2.2 If a material is allowed to change in size, it can experience different types of stress. One type of stress that can be induced is compression stress. Compression stress occurs when a force is applied to the material, causing it to be squeezed or compressed.

Another type of stress that can be induced when a material changes in size is tension stress. Tension stress occurs when a force is applied to the material, causing it to be stretched or elongated. This happens because the material is trying to resist the force and return to its original size.

In some cases, when a material changes in size, no stress may be induced.

Finally, shear stress is another type of stress that can be induced when a material changes in size.

In summary, when a material changes in size, it can experience compression stress, tension stress, shear stress, or no stress depending on the external forces acting upon it.

To know more about compression stress, refer

https://brainly.com/question/29264449

#SPJ11

Answer:

Given:

mb=2.05 kgmb=2.05 kg Mass of the book

fs=2.45 Nfs=2.45 N Static friction

fk=1.50 Nfk=1.50 N Kinetic friction

Answer:

During the evening, the land cools off more quickly than the water. The cooler land cools the air above it, while the warmer water warms the air above it. These differences in air temperature create the convection.

Explanation:

sorry I took forever