What is the total magnification of a microscope with two lenses when one lenses has a magnification of 15 and the other lens has magnification of 30

- 15

- 30

- 45

- 450

Answer:

D. All of the above

Explanation:

Because it's the most logical answer.

Answer is A 2.8 x 10^-8 N, to the right

The net gravitational force on mass A due to masses B and C is required.

The correct option is a. \(2.8\times 10^{-8}\ \text{N}\) to the right.

G = Gravitational constant = \(6.674\times 10^{-11}\ \text{Nm}^2/\text{kg}^2\)

\(r_{AB}\) = Distance between A and B = 0.4+0.1 = 0.5 m

\(r_{AC}\) = Distance between A and C = 0.1 m

\(m_A=m_B=m_c\) = Mass of each particle = 2 kg

The required force is

\(F_A=F_{AB}+F_{AC}\\ =\dfrac{Gm_Am_B}{r_{AB}^2}+\dfrac{Gm_Am_C}{r_{AC}^2}\\ =Gm^2\left(\dfrac{1}{r_{AB}^2}+\dfrac{1}{r_{AC}^2}\right)\\ =6.674\times 10^{-11}\times 2^2\left(\dfrac{1}{0.5^2}+\dfrac{1}{0.1^2}\right)\\ =2.8\times 10^{-8}\ \text{N}\)

The magnitude of force will be \(2.8\times 10^{-8}\ \text{N}\)

The direction will be towards the right since C is closer to A.

Learn more:

https://brainly.com/question/1835915

https://brainly.com/question/7038796

The type of circuit shown in the diagram is a closed series circuit. The Option C.

The circuit diagram illustrates a closed series circuit, where the components are connected in a series, forming a single loop. In a closed series circuit, the current flows through each component in sequence, meaning that the current passing through one component is the same as the current passing through the other components.

The flow of current is uninterrupted since the circuit forms a complete loop with no breaks or open paths. Therefore, the correct answer is a closed series circuit.

Read more about circuit

brainly.com/question/9637376

#SPJ1

Self-ignition, also known as pre-ignition, occurs in an internal combustion engine when the fuel-air mixture in the combustion chamber ignites before the spark plug fires.

One way to avoid pre-ignition is to limit the compression ratio of the engine, as a higher compression ratio can lead to higher temperatures in the combustion chamber.

The ideal gas law states that PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature.

The compression ratio of an engine is the ratio of the volume of the combustion chamber when the piston is at the bottom of its stroke (the "swept volume") to the volume of the combustion chamber when the piston is at the top of its stroke (the "clearance volume").

Given that the temperature at which self-ignition would occur using a certain brand of petrol is 350°C, and assuming that the ideal gas law applies, we can calculate the highest compression ratio that may be used to avoid pre-ignition.

To do this, we need to know the initial temperature and pressure in the combustion chamber, as well as the final temperature and pressure after compression. We can then use the ideal gas law to calculate the compression ratio.

In conclusion, based on the information provided, it is possible to calculate the highest compression ratio that may be used to avoid pre-ignition in an engine using the ideal gas law. However, more specific information such as the initial temperature and pressure and the specific brand of petrol is needed for a more accurate calculation.

Learn more about ignition at

https://brainly.com/question/6481027

#SPJ4

Answer:

6

Explanation:

Answer:

We can use the formula for the transformer voltage ratio, which states that the ratio of the number of turns in the primary coil to the number of turns in the secondary coil is equal to the ratio of the output voltage to the input voltage:

Np/Ns = Vp/Vs

where Np is the number of turns in the primary coil, Ns is the number of turns in the secondary coil, Vp is the input voltage, and Vs is the output voltage.

We know that Vp = 220 V and Vs = 140 V, and we are trying to find Ns. We also know that Np = 30, since that is the number of turns in the primary coil. Substituting these values into the formula, we get:

30/Ns = 220/140

Simplifying the right side of the equation, we get:

30/Ns = 11/7

Cross-multiplying, we get:

11Ns = 210

Dividing both sides by 11, we get:

Ns = 19

Therefore, the answer is b.) 19.

Answer:

it is d all of the above your welcome

You are at  latitude 35∘ N , if the north celestial pole is 35∘ above your northern horizon . The north celestial pole is a point where all stars can be seen from the northern hemisphere.

All of the stars visible from the Northern Hemisphere spin about the North Celestial Pole in the sky. North Street Polaris stays virtually immobile in the sky and all the stars in the northern sky appear to revolve around it because it is almost directly aligned with the Earth's axis of rotation "above" the North Pole, the north celestial pole. This spot in the sky is virtually exactly where ar, also known as Polaris, is located.

The reasonably brilliant Pole Star is located extremely close to the North Celestial Pole, making it simple to detect it in the night sky. But there are no observable stars near the South Celestial Pole. All of the stars in the sky are centred on the North Celestial Pole.

For more such questions on Northern horizon :

brainly.com/question/731197

#SPJ4

The force that pushes groundwater from pore space to pore space when below the water table is primarily due to the pressure gradient within the aquifer. This pressure gradient is caused by the weight of the overlying water and the force of gravity.

Below the water table, the spaces between soil or rock particles are filled with water. These spaces are known as pore spaces. The water table represents the upper surface of the saturated zone, where all the pore spaces are filled with water. gravity acts vertically downward, causing the weight of the water above a particular point to exert a downward force. As a result, the water pressure increases with depth. This increase in pressure creates a pressure gradient within the aquifer.

The pressure gradient drives the flow of groundwater from areas of higher pressure to areas of lower pressure. When a well is drilled into the aquifer below the water table, water will naturally flow into the well and rise to the level of the water table. This is because the pressure is higher below the water table compared to the lower pressure in the well.

The movement of groundwater from pore space to pore space occurs due to the pressure difference between adjacent spaces. Water will flow from areas of higher pressure to areas of lower pressure until the pressures equalize. This movement of water is known as groundwater flow or hydraulic conductivity.

learn more about aquifer here:

https://brainly.com/question/22518784

#SPJ11

Answer:

858.7 N

Explanation:

The magnetic force on the charge F = Bqv where B = magnetic field strength = 4.02 mT = 4.02 × 10⁻³ T, q = charge = 7.12 μC = 7.12 × 10⁻⁶ C and v = c = speed of light = 3 × 10⁸ m/s

F = Bqc

=  4.02 × 10⁻³ T × 7.12 × 10⁻⁶ C × 3 × 10⁸ m/s

= 858.7 N

The temperature from 17 minutes to 20 minutes likely continued to rise, but at a slower rate compared to earlier stages due to heat transfer equilibrium between the water and the environment. During this time, the water was likely transitioning from a rapid temperature increase to a more gradual one as it approached the boiling point.

When ice melts and transitions to water, it absorbs heat from the surroundings, causing the temperature to rise rapidly. However, as the water temperature gets closer to the boiling point, the rate of temperature increase slows down. This occurs because the water starts to reach a thermal equilibrium with its surroundings. As the water gets hotter, it transfers more heat to the surrounding environment through convection, radiation, and conduction. The rate of heat transfer from the water to the environment gradually balances with the rate of heat absorption, resulting in a slower temperature increase. Therefore, from 17 minutes to 20 minutes, the temperature of the water likely continued to rise, but at a slower rate compared to the earlier stages.

learn more about temperature here:

https://brainly.com/question/11045766

#SPJ11

In order to determine the friction force, proceed as follow:

Take into account that total momentum of the system must conserve, then, you have:

m*v = (m + M)v'

where,

m: mass of the bullet = 6.25g = 0.00625kg

v: initial speed of the bullet = 365m/s

M: mass of the crate = 4.50kg

v': speed of both crate and bullet after the impact = ?

Solve the equation above for v', replace tha values of the other parameters and simplify:

Now, consider that the work done by the friction force is given by:

W = Fr*d

where,

Fr: friction force = ?

d: distance = 0.15m

Furthermore, the work done is equal to:

W = 1/2*(m+M)v'^2 that is, the change in kinetic energy is equal to the work

Then, you can equal the previous expressions for W, solve for Fr, replace and simplify:

Now, take into account that the friction force can be written as follow:

Fr = μN = μ(m+M)g

where,

μ: coefficient of kinetic friction between crate and floor

g: gravitational acceleration constant = 9.8m/s^2

Solve the equatio above for μ, replace the values of the other parameters and simplify:

Hence, the coefficient of kinetic friction is approximately 0.087

Answer:

20 N/m

Explanation:

From the question,

The ball-point pen obays hook's law.

From hook's law,

F = ke............................ Equation 1

Where F = Force, k = spring constant, e = compression.

Make k the subject of the equation

k = F/e........................ Equation 2

Given: F = 0.1 N, e = 0.005 m.

Substitute these values into equation 2

k = 0.1/0.005

k = 20 N/m.

Hence the spring constant of the tiny spring is 20 N/m

Answer:

C.Plane mirror this is the answer of this question.

None of the above. That is option D.

A spherical mirror is defined as a mirror that has a surface that reflects curved rays. It is also called a curved mirror.

Types of spherical mirror include:

Example of concave mirror are Torch lights and automobile headlights.

Example of convex mirror is the magnifying glasses and telescopes.

Therefore, concave, convex and plane mirrors are all examples of a spherical mirror.

Learn more about plane mirrors here:

https://brainly.com/question/3459308

A 25.5 kg video cart is rolled down a hallway. It is accelerated at 0.12 m/s2. If a force of 30 N is applied to move the cart . The wheels have 26.4 N  force of friction against the floor

Force of friction is that force  that resists the sliding or rolling of one solid object over another

F(applied) - friction = F net

30 - fr = mass * acceleration

30 - fr  = 25.5  *  0.12  

fr = 30 - 3.06

  = 26.4 N

The wheels have 26.4 N  force of friction against the floor

To learn more about force of friction here :

https://brainly.com/question/13707283

#SPJ1

The flow of electricity in a certain path is the circuit.

The flow rate of the water in the pipe is given by Q=Av

where

Q is the flow rate

A is the cross-sectional area of the pipe

v is the speed of the water

with the help of question,

,

Q=1.20m3/s

the radius of the pipe is

r = 0.160 m

So, the cross-sectional area is

;

;A=πr^2 where r=0.160mm

=π(0.160×0.160)2=0.0256m

So we can re-arrange the equation to find the speed of the water:

;v=Q/A=1.20m3/s/0.0256

=4687.5m3

To know more about area of pipe visit

https://brainly.com/question/19211820

#SPJ1

Answer:

Yeah it's right there from the one next to the exclamation point

Answer:

its not there

Explanation:

its literally not there

Esteem needs are not related to basic needs, such as food, water, and shelter, but they are higher needs that must be satisfied. Therefore, the right answer is "None of these is correct basic needs."

Esteem needs are concerned with people's self-image and how they are viewed by others. Esteem needs involve feeling accomplished, respected, and acknowledged. Esteem needs are split into two types, inner and external esteem.Inner esteem is determined by self-esteem, which is how a person regards themselves. Inner esteem is related to a person's sense of worth and value.

It is a mental state in which a person feels good about themselves and their abilities. To have a positive sense of self-esteem, people must feel valued and respected for who they are. It aids in the development of self-confidence and self-worth. It is the starting point for creating meaningful friendships and relationships.External esteem, on the other hand, is the perception of the individual by others.

When we say "esteem" in a social context, we usually mean what others think of us. Esteem needs are not related to basic needs, such as food, water, and shelter, but they are higher needs that must be satisfied. Therefore, the right answer is "None of these is correct basic needs."

To learn more about Esteem visit;

https://brainly.com/question/28768312

#SPJ11

Answer:-00=;op

Explanation:poop

Answer:

450 hz X 4 = 1800

Explanation: Speed =

Wavelength (4) X frequency (450)

Im not 100% sure though

Inheritance is fundamental for reproduction because it means the perpetuity of characteristics.  It is the process by which genetic information is passed on from parents to offspring.

Inheritance refers to the mechanism through which genetic information (DNA) is passed from parents to offspring across generations.

In genetics, inheritance can be used to explain the similar phenotypic traits between parents and offspring.

Reproduction is the process for which new organisms are developed, which requires the inheritance of many characteristics of the parents in offspring.

Learn more about inheritance here:

https://brainly.com/question/4520267

Answer:

See Below

Explanation:

It is a change in the distribution of electric charge on one object because of  the influence a nearby object that has an electric charge.  So if an object with a negative charge is brought near to a neutral object, the neutral object will alter itself so that one side becomes more positive and the other side becomes more negative.

Electrostatic induction occurs whenever any object is placed in an electric field.

Answer:

the hot air balloon

Explanation:

Warmer air is less dense than cooler air, so it rises faster compared to a cooler hot air ballon.

The balloon filled with hot air will rise higher because of its lesser density.

Density of an object is defined as the mass per unit volume of the object. It is considered as the measure of amount of substance in a give space.

Here,

Two hot-air balloons are filled at the same time. Among them, one is filled with warm air and the other one is filled with hot air.

When the balloons are released to go up, the balloon filled with hot air will rise higher. This is because of the difference in their density.

When the hot air is filled, its temperature is increased. Therefore the volume also increases which will result in the decreased density of the hot air balloon.

The balloon filled with hot air will be less denser when compared to the other. The buoyancy of the balloons is affected by their densities.

The hot air in the balloon is less denser than the cool air. So, the buoyancy of the hot air balloon will be more than that with warm air. As a result, the balloon filled with hot air will rise higher in the air.

Hence,

The balloon filled with hot air will rise higher because of its lesser density.

To learn more about density, click:

https://brainly.com/question/952755

#SPJ2

The universe's mass-energy density would be similar to the critical density based on the characteristics, which are comparative abundances of the exceptionally light elements.

Properties are the features that allow us to distinguish between different types of materials. A feature of material that is unrelated to its chemical makeup is called a physical property. Attributes include things like density, color, hardness, melting and liquid and a gas, and electrical conductivity.

Anything that a individual or a company has legal ownership is considered property. Property can relate both to real objects, like homes, automobiles, or appliances, as well as intangible items with the potential for future value, like stock and bond certificates.

To know more about properties visit:

brainly.com/question/1200658

#SPJ4

The acceleration of the object is 0.926 m/s².

The electric force experienced by the object is the product of charge and electric field of the object and it is given as;

F = Eq

where;

F = 4900 x 8.5 x 10⁻⁹

F = 4.165 x 10⁻⁵ N

The acceleration of the object is determined by applying Newton's second law of motion as follows;

a = F/m

a = (4.165 x 10⁻⁵ N) / (4.5 x 10⁻⁵ kg)

a = 0.926 m/s²

Learn more about acceleration here: https://brainly.com/question/14344386

#SPJ1

Answer: \(4 m/s^{2}\)

Explanation:

First you take your end velocity and subtract the initial velocity (\(40-20=20\))

Then you divide the difference by the time (\(20/5=4\))

Giving you the result of \(4 m/s^{2}\)

This all uses the equation \(V_{f}-V_{i}=ta\)

Skateboarders move more quickly and more slowly depending on the gravitational field around them.

Skateboarders go more slowly and more quickly depending on the amount of friction they encounter. The skater initially has no kinetic energy, only potential energy. The skater had used all of the energy that she will ever have. Since the track is frictionless, no energy is converted to thermal energy throughout the route from point A to point B. The skater has greater potential energy the higher he is. His kinetic energy increases and his potential energy falls as his height decreases. Ice skating is a good illustration of sliding friction.

Learn more about energy here-

https://brainly.com/question/1932868

#SPJ4