you have a telescope with a 95 cm focal length objective. recall that simple two-element telescopes invert the images of the objects viewed through them.
fo = 95 cm
fe = 3.5 cm
What is the angular magnification, M, of this telescope when equipped with a 3.5 cm focal-length eyepiece?

From the law of the conservation of energy;  the ratio of the total kinetic energy after the collision to the total kinetic energy before the collision must be 1.

The term momentum is the product of mass and velocity. The principle of conservation of linear momentum states that total momentum before collision must be the same as the total momentum after collision thus the  ratio of the total momentum after the collision to the total momentum before the collision must be 1.

Also, from the law of the conservation of energy;  the ratio of the total kinetic energy after the collision to the total kinetic energy before the collision must be 1.

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A medium is the substance through which a wave travels. Mediums include gases (such as air), liquids (such as water), and solids (such as ropes).

The medium can be solid, liquid, or gas, and the speed of the wave is determined by the material qualities of the medium. Light, on the other hand, is not a mechanical wave; it may pass through a vacuum, such as the empty areas of space.

Sound waves move the slowest through gases, the fastest through liquids, and the fastest through solids among the three media (gas, liquid, and solid). The speed of sound is also affected by temperature. Gases: The speed of sound is determined by the qualities of the medium through which it travels.

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True, one of the eight steps to establish and verify an electrically safe work condition is to release stored energy.

Releasing stored energy is a critical step in ensuring electrical safety during maintenance or repair work. When working on electrical equipment, there can be residual energy stored in capacitors, inductors, batteries, or other sources.

This stored energy poses a significant risk to workers if not properly released before beginning work. To mitigate this risk, the process of releasing stored energy involves discharging capacitors, removing power sources, and ensuring that all energy sources are de-energized. It may also involve following specific procedures provided by equipment manufacturers or industry standards.

By releasing stored energy, potential hazards such as electric shock, arc flashes, or explosions can be minimized, creating a safer work environment for electrical workers.

Therefore, it is crucial to include this step as part of the overall process to establish and verify an electrically safe work condition.

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The equation you wrote is incorrect,

the correct is: CaCO3+CaO+CO2

The law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as the system's mass cannot change, so quantity can neither be added nor be removed. Therefore, the quantity of mass is conserved over time.

Your friend is incorrect in saying that this doesn't follow the law of conservation of mass. The molecule of oxygen is split up but the number of total atoms of oxygen is same. So, it follows the law of conservation of mass.

The kinetic energy of the photoelectrons emitted is calculated as 2.23 *10^-19 J .

Photoelectrons are the electrons which are produced when energetic photon of radiation strikes a molecule. Photoelectron is an electron ejected from atom, molecule, or solid by an incident photon.

In terms of behavior and properties, photoelectrons are no different from other electrons.

E= h c/λ

= 6.6 *10^-34 * 3 * 10^8/400 * 10^-9

= 4.95 *10^-19 J

Work function = 1.7 eV= 1.7 * 1.6 *10^-19

= 2.72 *10^-19 J

Hence,  kinetic energy of photo electrons emitted will be;

= 4.95 *10^-19 J -  2.72 *10^-19 J

kinetic energy = 2.23 *10^-19 J

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Answer:

Explanation:

To add or subtract two vectors, add or subtract the corresponding components. Let →u=⟨u1,u2⟩ and →v=⟨v1,v2⟩ be two vectors. The sum of two or more vectors is called the resultant. The resultant of two vectors can be found using either the parallelogram method or the triangle method .

Answer:

The answer is A good luck :P

Answer:

A

Explanation:

The light Bounces off because it is reflecting off glass or anything else

Antonio will need a pipette to measure 15 ml of distilled water in a laboratory.

A pipette is a laboratory equipment used in measuring liquids in little amounts. 15 ml is a small amount of liquid so a pipette is a better fit for such amount.

We can conclude that a pipette is a better instrument to measure 15 ml of distilled water.

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Tactical displacement, one of the five forms of displacement identified by Marcus Felson and Ronald Clarke, means that crime may be displaced from one location, time, target, or offense to another as a result of situational crime prevention measures.

Situational crime prevention measures aim to make it more difficult for criminals to commit crimes by changing the environment in which crime occurs. These measures may include adding security cameras, increasing lighting, or using security guards. However, some criminals may simply move to another location, time, target, or offense, where situational crime prevention measures are less effective or absent. This is known as tactical displacement.

For example, if a parking lot installs security cameras, car thieves may move to a different parking lot that does not have cameras. Similarly, thieves may switch to stealing from a different store with fewer security measures if a store increases security measures to prevent shoplifting. Tactical displacement highlights the importance of considering the broader context and potential unintended consequences of situational crime prevention measures.

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Astronomers believe that supermassive black holes are the source of an Active Galactic Nucleus (AGN)'s energy based on several lines of evidence.

Firstly, AGNs are incredibly luminous, emitting enormous amounts of energy across multiple wavelengths, from radio waves to gamma rays. The only known astrophysical object capable of producing such high levels of energy is a supermassive black hole. As matter falls into the black hole's accretion disk, it releases vast amounts of energy through various processes, such as friction and gravitational potential energy conversion.

Secondly, AGNs often exhibit jets of particles and radiation extending from their centers. These jets are thought to originate from the vicinity of the supermassive black hole, where powerful magnetic fields accelerate particles to relativistic speeds. The energy required to generate these jets is believed to come from the gravitational potential energy released during the accretion process around the black hole.

Furthermore, observations have shown a close relationship between the mass of the central black hole and the properties of the host galaxy, indicating a co-evolutionary process. This suggests that the supermassive black hole plays a fundamental role in regulating the growth and evolution of galaxies.

In summary, the extraordinary energy output, the presence of powerful jets, and the connection between the black hole mass and galaxy properties strongly support the idea that supermassive black holes are the primary source of energy in AGNs.

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The maximum height to which the motor can lift the 5.00-kilogram stone vertically in 10.0 seconds is approximately 4.16 meters. The correct option is 3

We can use the equation for work done:

Work = Force * Distance

In this instance, the motor's work is equal to the change in the stone's potential energy as it is raised vertically. Potential energy is calculated as follows:

Mass times gravitational acceleration times height equals potential energy.

Given the stone's mass of 5.00 kg, the gravitational acceleration of about 9.8 m/s2, and the lifting time of 10.0 seconds, we may get the potential energy as follows:

Potential Energy = Mass * Gravitational Acceleration * Height

We can convert the work performed to potential energy and solve for height since the motor's power rating of 20.4 watts is equal to the amount of work completed in one unit of time.

Power = Time / Work

Energy Potential x Time equals Power

Potential Energy: Height = (Power * Time) / (Mass * Gravitational Acceleration) Mass * Gravitational Acceleration: Height = (Power * Time)

Substituting the given values:

Height = (20.4 W * 10.0 s) / (5.00 kg * 9.8 m/s²)

Height ≈ 4.16 m

Therefore, the maximum height to which the motor can lift the 5.00-kilogram stone vertically in 10.0 seconds is approximately 4.16 meters.

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Answer it scapes away loose anf rough pieces of wood

Explanation:

Answer:

To achieve a nice smooth finish, it's essential to sand to help prepare the area for painting application, by sanding you are removing imperfections (also known as pimples), creating a nice smooth finish while at the same time adding adhesion by developing small, rough ridges for the paint to stick to.

Using the right sandpaper can make all the difference in a woodworking, painting, or finishing project; but choosing between the many different types of sandpaper that are available can be a challenge. Here are some tips on how to choose the best sandpaper for your next project.

Explanation:

Sry if this is wrong :(

ANSWER:

0.732 m^3/s

STEP-BY-STEP EXPLANATION:

We must convert from ft^3/min to m^3/s.

To do this, we must take into account the following conversion factors:

1 meter is equal to 3.28 feet

1 minute is equal to 60 seconds

Knowing this, we do the conversion just like this:

The fans airflow in m^3/s is 0.732

Answer:

450 g =0.9921 lb

Explanation:

Answer:

i dont know

Explanation:

hello

The voltage of a storage battery having 12 lead-acid type cells connected in series will be 24 V.

The voltage of a lead-acid battery is directly proportional to the number of cells connected in series. The voltage of a single lead-acid cell is typically around 2 V, so the voltage of a battery with n cells connected in series can be calculated using the following formula:

V = n * Vcell

where V is the voltage of the battery and Vcell is the voltage of a single cell.

Substituting the given value of n, we get:

V = 12 * 2 V

V = 24 V

Therefore, the voltage of a storage battery having 12 lead-acid type cells connected in series will be 24 V.

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This statement is False, It is not true for every object to come closer to appoint if it is accelerating towards a point.

For example acceleration due to gravity acts on every object but it doesn't take the object closer to Earth as time goes.

In mechanics, acceleration is the rate of change of the rate of an item with admire to time. Accelerations are vector quantities (in that they have significance and path). The orientation of an item's acceleration is given by the orientation of the net pressure performing on that object. The magnitude of an item's acceleration, as described through Newton's 2d law, is the blended impact of two causes:

The internet balance of all external forces performing onto that item — importance is at once proportional to this net resulting force;

That object's mass, relying at the substances out of which it's miles made — magnitude is inversely proportional to the item's mass.

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When an object protected by a lightning rod is struck by a lightning bolt, it will bleed the lightning discharge to the ground before the protected object can be harmed.

To protect a building or an object from a direct hit of lightning, light rods are designed which conducts the electric discharge to the ground. lightning rods protect the object from damage, particularly from fires caused by lightning.

So to protect an object from lightning, lightning rods are used.

Therefore, when an object protected by a lightning rod is struck by a lightning bolt, it will bleed the lightning discharge to the ground before the protected object can be harmed.

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The force is  1.1 * 10^-32 N

Coulomb's law is a fundamental law in physics that describes the electrostatic interaction between charged particles. It states that the force between two point charges is proportional to the product of their charges and inversely proportional to the square of the distance between them. Mathematically, Coulomb's law can be written as:

F = k * q1 * q2 / r^2

where F is the electrostatic force between the charges q1 and q2, r is the distance between the charges, and k is the Coulomb constant, which is approximately equal to 9 x 10^9 N * m^2 / C^2. The force F is a vector quantity, meaning that it has both magnitude and direction, and is directed along the line joining the two charges.

We have that;

F = Kq1q2/r^2

F = 9 * 10^9 * 1.6*10^ -19 * 3.2*10^ -19/(0.02)^2

F = 1.1 * 10^-32 N

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The selected velocity does not depend on either the mass or the charge of the particle. It is because the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line .

If the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. Because the acceleration depends on the mass and charge, these influence the sharpness (resolution) of the transmitted particles.

Thus, even if the particles have different charges or masses, they can have the same velocity when passing through the selector. So, the velocity of a neutral particle would be selected by passage through this device, as it is independent of both mass and charge.

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Let's see

Use snells law

\(\\ \rm\Rrightarrow \dfrac{n_1}{n_2}=\dfrac{sini}{sinr}\)

\(\\ \rm\Rrightarrow \mu=\dfrac{sin30}{sin19.9}\)

\(\\ \rm\Rrightarrow \mu=0.5/0.34\)

\(\\ \rm\Rrightarrow \mu=1.47\)

It may be glass

The method used by an agency that offers different programs targeting different ethnic groups. The agency is using the "targeted" method. In this method, programs are designed specifically for various ethnic groups, taking into account their unique needs and cultural backgrounds, to ensure the most effective delivery and engagement.

esearch on ethnic advertisements has identified attitudinal differences between target and non-target groups. However, investigators have largely failed to explain the reasons behind these differences. Accordingly, this study examines the process by which target and non-target group adolescents build attitudes towards ethnically focused advertisements. The Elaboration Likelihood Model and Dual Mediation Hypothesis models are used as theoretical and operational frameworks. This study uses a modified DMH model that incorporates ethnic identity strength and self-reference as important antecedents of ad attitude and ad cognition in the context of ethnic advertising.

So, The method used by an agency that offers different programs targeting different ethnic groups. The agency is using the "targeted" method.

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When there is an unbalanced force applied on an object, velocity changes based on the direction of the force with respect to its motion but the acceleration only changes if there is a change in the applied force.

According to Newton's second law of motion,

F = m a

F = Force

m = Mass

a = Acceleration

F ∝ a

This implies that when the Force increases acceleration increases and vice-versa

Therefore, when there is an unbalanced force acting on the object, the above mentioned motion will occur.

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Answer:

fitness is very important to me

(a) The time required to reduce the paratrooper's speed to 5.25 m/s², assuming the acceleration is constant, can be found using the formula `v = u + at`, where `v` is the final velocity, `u` is the initial velocity, `a` is the acceleration, and `t` is the time taken.

Initially, the paratrooper is falling downward at a speed of 30.3 m/s, and after the parachute opens, the upward acceleration is 69 m/s². Therefore, the net acceleration is given by:

Net acceleration = upward acceleration - downward acceleration= 69 - 9.81= 59.19 m/s²

The time taken to reduce the speed to 5.25 m/s can be found by substituting the values into the above formula as shown below:5.25 = 30.3 + 59.19t⇒ t = (5.25 - 30.3)/59.19≈ -0.421 s

Since the time can't be negative, the above estimate is invalid.

(b) The distance fallen during the time interval can be found using the formula `s = ut + 1/2 at²`. If the acceleration is not constant, an easy estimate can be obtained by taking the average of the initial and final speeds, and multiplying by the time taken, which is approximately the same as the actual distance fallen.

The average speed is given by:(30.3 + 5.25)/2 = 17.78 m/s

Therefore, the approximate distance fallen is:s ≈ ut = 17.78 × t

(a), the time taken to reduce the speed to 5.25 m/s is approximately -0.421 s, which can be disregarded since time can't be negative.

Therefore, the actual time taken is:5.25 = 30.3 + at⇒ t = (5.25 - 30.3)/a= 1.435 sSubstituting this into the above formula, the actual distance fallen is:s = 17.78 × 1.435≈ 25.50 m

Therefore, the paratrooper falls a distance of approximately 25.50 m during this time interval.

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