1. Name two basic differences between normal galaxies and active galaxies.
2. What is the most likely range of values for Hubble’s constant? What are the uncertainties in its value?

For a camera equipped with a 41-mm focal-length lens, if the image height equals the object height, it means the magnification is 1.

Based on the thin lens equation (1/f = 1/o + 1/i), where f is the focal length, o is the object distance, and i is the image distance, we can solve for o given that the image height equals the object height.

Using the magnification equation (m = -i/o) and substituting m = -1 (since the image height equals the object height), we can simplify the thin lens equation to solve for o:

1/f = 1/o - 1/o = 0

This means that the object distance (o) is infinity, or very far away from the camera. In practical terms, it means that the camera is focused on a subject that is much farther away than the focal length of the lens.

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Answer:

5.03×10¯⁷ N

Explanation:

From the question given above, the following data were obtained:

Mass of the person (M₁) = 55 Kg

Mass of the car (M₂) = 1234 Kg

Distance apart (r) = 3 m

Gravitational constant (G) = 6.673×10¯¹¹ Nm²/Kg²

Force (F) =?

The force between the person and his car can be obtained as follow:

F = GM₁M₂ / r²

F = 6.673×10¯¹¹ × 55 × 1234 / 3²

F = 6.673×10¯¹¹ × 67870/ 9

F = 5.03×10¯⁷ N

Thus, the force between the person and his car is 5.03×10¯⁷ N

The required temperature in kelvin scale when the temperature in Fahrenheit is calculated to be 421 K.

The Fahrenheit conversion to celsius is determined through the formula is (°F  - 32)  × 5/9 = °C. Hence, we substitute 77 °F where the equivalent temperature in celsius is 25 °C. The temperature in centigrade is multiplied by 273 to get the kelvin equivalent.

The given temperature in Fahrenheit is 298 °F. It is to be converted into kelvin temperature.

So, (°F  - 32)  × 5/9 = °C

(298 - 32) × 5/9 = 147.78 × 5/9 = 147.78 °C

To convert from °C to K, we need to add 273 to celsius temperature.

147.78 °C + 273 = 421 K

Thus, the required temperature in kelvin scale is calculated to be 421 K.

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The angular height of the sun above the horizon. This is the explanation of the term "sun's altitude". A long answer could go on to explain how the sun's altitude changes throughout the day and throughout the year due to the tilt of the Earth's axis and the Earth's rotation around the sun.

The altitude of the sun affects the amount and intensity of sunlight received at different latitudes and seasons, which has important implications for climate and weather patterns.

b) the angular height of the sun above the horizon.

To explain further, the sun's altitude is measured in degrees and represents the angle between the sun and the observer's local horizon. It ranges from 0 degrees when the sun is at the horizon to 90 degrees when the sun is directly overhead. This value is important for determining the intensity of sunlight received at a specific location and time.

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Explanation:

En un balde de 25 cm de altura se hace un orificio a 15 cm del suelo.calcula la velocidad de salida del agua

"American Beauty" critiques capitalism, patriarchy, and gender inequality in modern society through its examination of media imagery and their effects on young people.

The movie "American Beauty" offers a scathing critique of the role of capitalism and patriarchy in shaping American culture. The film highlights how these systems can lead to a sense of emptiness and lack of fulfillment, even for those who appear to be successful in society. Moreover, the movie explores how gender inequality is perpetuated in modern media, often through the objectification and sexualization of women.

These images can have a detrimental effect on young people, promoting harmful gender stereotypes and contributing to a culture of violence against women. Thus, it is important to critically examine the ways in which capitalism and patriarchy shape our society and to challenge the harmful messages that are propagated through modern media.

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Answer:

166 meters. Displacement is the movement of something from one place/position to another. Unless the type of displacement you're talking about is “the occupation by a SUBMERGED body or part of a body of a volume which would not otherwise be occupied by a fluid”.

Explanation:

33 + 71 + 62 = 166

The distance you traveled does not depend upon where, is about how much.

A person's strength, speed, power, agility, flexibility, and endurance are all increased with cross training, which also helps to reduce the chance of injury.

Cross-training is the technique of preparing employees to perform duties that go outside of their typical responsibilities or to work in multiple different jobs. For instance, cross-training could be used to teach someone who works in collections how to work in billing, and the other way around.

This is based on the finding that strengthening one limb while exercising the opposite limb results in a phenomena known as cross-training, also known as the contralateral strength training effect.

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True. Cross training is a type of training routine that combines two or more different exercises into a workout to prevent injuries, burnout, and overuse.

What is the cross-training training method?

Cross-training is the technique of preparing employees to perform duties that go outside of their typical responsibilities or to work in multiple different jobs. For instance, cross-training could be used to teach someone who works in collections how to work in billing, and the other way around.

A piece of cardio training equipment is a cross trainer, commonly referred to as an elliptical trainer. It is a fantastic full-body exercise and works your arms and legs at the same time. Cross training and a cross trainer are very different from one another, however a cross trainer can play a significant role in a cross training regimen.

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Part 1: The number of pathways in a circuit determines the possible routes for electric current to flow.

There are maximum of five pathways in this circuit, depending on its complexity and the arrangement of components.

Part 2: Determining whether the circuit is series or parallel requires more information.

In a series circuit, components are connected in a single path, and the current flows through each component sequentially.

If the circuit has only one pathway (zero or one pathway), it suggests a series circuit.

However, if the circuit has multiple pathways (two or more pathways), it indicates a parallel circuit.

To conclusively determine the circuit's nature, we need to analyze the circuit diagram or obtain additional details regarding the component connections and their interactions.

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No, a magnetic compass will not work properly near an automobile or train and is therefore denoted as option A.

This is referred to as an instrument which is used for determining the direction on the surface of Earth by means of a magnetic pointer that aligns itself with Earth’s magnetic field.

A magnetic compass will not work properly near an automobile or train because the magnetic lines of force are unaffected by paper, glass, or plastic and we are ware that this vehicles have parts such as the windows, engine etc which are made from these type of materials. They will however work properly if these parts are avoided by the user of the compass.

This is therefore the reason why No was chosen as the correct choice in this type of scenario.

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Answer:

trasvere wave

Explanation:

first one

Answer:

The volume of an object is a measure of the amount of space occupied by that object

Explanation:

Answer: A student might use a graduated cylinder to measure volume of a chemical solution in milliliters

Explanation:

Volume is the quantity of three-dimensional space enclosed by a closed surface,an often quantified numerically using the SI derived unit, the cubic metre.

Sound waves travel through the air and can be blocked by walls. When a sound wave passes through a wall, the wall absorbs some of the sound energy, resulting in the higher-pitched sound waves being blocked more than lower-pitched sound waves.

This is because higher-pitched sound waves have shorter wavelengths, making them more susceptible to being blocked than lower-pitched sound waves, which have longer wavelengths.

This phenomenon is known as wave-particle duality, which states that sound waves have both particle-like and wave-like properties. The particle-like property of higher-pitched sound waves makes them more susceptible to being blocked by walls than lower-pitched sound waves. This is why you can hear lower-pitched sounds more clearly when they pass through a wall.

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Answer:

So the people in the ring don't get hurt or break anything on impact once they hit the floor

Answer:

is the first one right

Explanation:

Answer:

yes

Explanation:

Answer:

The temperature at which a substance boils AND whether a substance floats or sinks in water

Explanation:

i just had this question and got it right with these answers

Matter can be defined or described as anything that takes up space, and it is composed of miniscule particles called atoms. It must display the two properties of mass and volume.

"Insignificant, microscopic, small, tiny, diminutive, minute, unimportant, particles are miniscule particle."

"An atom is the smallest unit of ordinary matter that forms a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are extremely small, typically around 100 picometers across."

"Mass is the quantity of matter in a physical body. It is also a measure of the body's inertia, the resistance to acceleration when a net force is applied. An object's mass also determines the strength of its gravitational attraction to other bodies. The SI base unit of mass is the kilogram."

"Matter is any substance that has mass and takes up space by having volume."

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Answer:

Doubling the speed.

E - M v^2

M = W / g     energy is proportional to weight

But energy is proportional to v^2

Answer:

Decomposers are organisms that break down dead or decaying organisms, they carry out decomposition, a process possible by only certain kingdoms, such as fungi. Like herbivores and predators, decomposers are heterotrophic, meaning that they use organic substrates to get their energy, carbon and nutrients for growth and development. While the terms decomposer and detritivore are often interchangeably used, detritivores ingest and digest dead matter internally, while decomposers directly absorb nutrients through external chemical and biological processes. Thus, invertebrates such as earthworms, woodlice, and sea cucumbers are technically detritivores, not decomposers, since they must ingest nutrients - they are unable to absorb them externally.

Explanation:

On motorized solar panel arrays, the panels are moved in order to track the movement of the sun. The correct answer is option b.

A motorized solar panel array is a device that can adjust the solar panel's orientation to the sun to maximize electricity production. As the sun moves across the sky, photovoltaic solar panels must adjust their orientation to remain perpendicular to the sun's rays.

By tilting or turning solar panels, solar panels can increase energy production. Motorized solar panel arrays enable solar panels to be tracked using an algorithm that considers the time of day, year, and latitude.

Solar panel tracking systems keep solar panels facing the sun to increase energy generation. The most basic tracking systems involve manually adjusting the solar panels' orientation. Motorized solar panel arrays, which automatically adjust the panels' angles based on the time of day, year, and location, are more sophisticated.

Dual-axis tracking systems can adjust the panels both vertically and horizontally. The result is an increase in the amount of energy generated by the solar panels. Therefore option b is correct.

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The brightness of the three bulbs compared to each other is bulb A is brighter than B and C which have the same brightness.

According to Ohm's law, the current passing through a conductor is directly proportional to the potential difference applied across its ends and inversely proportional to the resistance of the conductor. So, the bulb with the least resistance will draw more current and shine brighter as compared to the other two bulbs. Thus, the bulb with the least resistance will be the brightest.

Besides, it is mentioned that the battery maintains a constant potential difference between its terminals. It means that the internal resistance of the battery is negligible. Therefore, the voltage across the three bulbs will be the same, and the current passing through each bulb will depend on the resistance of the individual bulbs.

In the given circuit, the brightness of the three bulbs will be different from one another. Bulb А is brighter thаn B аnd C which hаve the sаme brightness. This is because the correct thru А is lаrger becаuse its pаrаllel pаth hаs less resistаnce thаn the B аnd C pаth.

Your question is incomplete, but most probably your figure can be seen in the Attachment.

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The SI unit of wavelength of a wave is meters (m).

Answer:

Work in + Work wasted = Work out

The data is probably not correct since the work produced should be less than the work input

Answer:

Force exerted on the car is 7030 N.

Explanation:

It is given that,

Mass of the car, m = 740 kg

Initial speed of the car, u = 19 m/s

Final speed of the car, v = 0

Time taken, t = 2 s

Let F is the force exerted on the car during this stop. We know that it is equal to the product of force and acceleration. Mathematically, it is given as :

F=m\times \dfrac{v-u}{t}F=m×tv−u

F=740\times \dfrac{0-19}{2}F=740×20−19

F = -7030 N

So, the force exerted on the car during this stop is 7030 N. Hence, this is the required solution.

Answer:

Yes it is

Explanation:

Movement. Newton's first law states that, if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.

Answer:

1,500 ohms is the total resistance

The voltage is held constant while the current through the circuit is varied.

First of all we need to know that the circuit has to do with the path that has been designed for the flow of current. In the case of what we have here, we can see that there is a circuit that has been set up and the land is used to test the effect of current on resistance.

In effect, this experiment is trying to demostrate the Ohm's law that deals with the connection of the voltage to the current. We would then need to vary the current that is passing into the circuit.

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Fire spreading from a wall to a nearby couch due to radiant heat transfer is an example of heat reflectivity.

When sunlight and other light sources strike a material's surface, its reflectance is measured. This number can be used to characterize a surface's characteristics in terms of surface finish. Another name for reflection is reflectivity.

This is a measurement of the amount of energy that material reflects at a specific wavelength. A value between 0 and 1 can also be used to represent reflectivity (or a percentage between 0 and 100).

Sigma and other top businesses have created a range of other forms of heat reflective fabric in the 50 years after the creation of space blankets, including Fabric and aluminum foil laminates, fabric laminates with metalized thin films.

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