What unit is force always in?
Pounds
Kilograms
Meters
Newtons

If two stars have the exact same spectral class, then they must have similar temperatures, masses, and sizes. The spectral class of a star is determined by its surface temperature, which affects the colors and intensities of the electromagnetic radiation emitted by the star. This information is typically used to classify stars into seven different spectral types: O, B, A, F, G, K, and M, with O being the hottest and M being the coolest.

If a newly discovered stellar object is cooler than an M star, then it is probably a brown dwarf, a type of sub-stellar object that is too small to sustain nuclear fusion in its core. Brown dwarfs are often referred to as "failed stars" since they are too small to become full-fledged stars but too large to be classified as planets. Brown dwarfs emit very little visible light and instead radiate in the infrared part of the spectrum. They can be difficult to detect due to their low luminosity and can be identified using specialized instruments that are sensitive to infrared radiation.

In summary, the spectral class of a star provides information about its temperature, size, and mass, and stars with the same spectral class will have similar properties. A newly discovered stellar object that is cooler than an M star is likely a brown dwarf, a sub-stellar object that emits primarily in the infrared part of the spectrum.

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Answer:

A composite wave

Answer:

surface waves

Explanation:

The maintenance of military defense and the national parks system that must be renewed every year falls under the category of government current spending, also known as government consumption.

Government current spending refers to the expenses incurred by the government on the day-to-day activities of providing public goods and services, such as education, healthcare, defense, and infrastructure maintenance.

This spending is financed through taxes and other forms of revenue collected by the government.

Government current spending is different from government capital spending, which involves investment in infrastructure, such as roads, bridges, and buildings.

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Answer:

i think the answer is about 50 m/s

Answer:

the circulation delivers nutrients to the muscles over a long period of time

-cardio respiratory endurance

the ability to exert force for a short time

-muscular strength

the ability of a muscle to repeatedly exert force for a long period of time

-muscular endurance

the ability to move joints easily through a full range of motion

-flexibility

the makeup of the body in terms of muscle, vital tissues, organs, fat and bone

-body composition

Answer:

the circulation delivers nutrients to the muscles over a long period of time

-cardio respiratory endurance

the ability to exert force for a short time

-muscular strength

the ability of a muscle to repeatedly exert force for a long period of time

-muscular endurance

the ability to move joints easily through a full range of motion

-flexibility

the makeup of the body in terms of muscle, vital tissues, organs, fat and bone

-body composition

hope this helps

Answer:

A generator is a device that converts mechanical energy into electrical energy by rotating a coil of wire in a magnetic field.

Answer:

the correct answer is C

Explanation:

When we express that the scale is 1:30 we mean that the objects of the realization are reduced by a factor of 30 in the graph, for example a distance of 30 cm in the graph is represented by a distance of 1 cm.

Therefore something that in the graph has n value to bring it to real size must be multiplied by the scale.

Applying this to our case if there is

               10 boulder on the chart

in reality there are #_boulder = 10 30

                                #_boulder = 300 boulder

so the correct answer is C

The absence of 5 km impact craters in the state of Washington could be due to geological factors, the time scale involved, and environmental conditions. The region's geological composition, extensive geological processes, and potential lack of significant impact events in recent history may contribute to this absence. The topography and environmental features of Washington could also affect the visibility and detection of impact craters. Further scientific research and surveys would be necessary to provide a more definitive explanation.

There are currently no 5 km impact craters in the state of Washington. Here are a few possible explanations for their absence:

1. Geological Factors: The geological composition of Washington may not be conducive to the formation and preservation of large impact craters. The region might have undergone extensive geological processes such as erosion, tectonic activity, or sedimentary deposition, which could have obscured or erased evidence of previous impact craters.

2. Time Scale: Impact craters are relatively rare geological features, and the absence of 5 km impact craters in Washington could be attributed to the time scale involved. It is possible that no significant asteroid or comet impacts of that magnitude have occurred in the region in recent geological history.

3. Environmental Factors: Washington's topography and environmental conditions might contribute to the lack of 5 km impact craters. For instance, dense forest cover or a high concentration of lakes and rivers could diminish the chances of impact craters being easily visible or detected on the surface.

It is important to note that these explanations are speculative, and further geological studies and surveys would be required to determine the precise reasons for the absence of 5 km impact craters in Washington.

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The distance between the Naval Navigator and the sunken cargo was found to be 2175 m by using sonar with 120kHz frequency and a wavelength of 3mm.

Sonar is largely used by NOAA scientists to create nautical charts, find underwater navigational hazards, find and map things on the bottom like shipwrecks, and map the actual seafloor. Sonar comes in active and passive varieties.

Speed of sound in water  =1450m/s

Time lag between transmission and reception of Sonar waves =3 s

sound waves travel a distance is twice the distance between the navigator and cargo (2S) in this time lag.

Time taken for the sound to reach the submarine  = 1/2 ×3 = 1.5s

Distance between the Navigator and the sunken cargo, S=1450×1.5s =2175m.

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Answer:

The species that has had the largest influence on Earth is undoubtedly humans. Human activity has significantly altered the natural environment, leading to climate change, deforestation, ocean acidification, and many other damaging effects on the planet.

Answer:

0.00025 kilometers

Explanation:

divide the length value by 1e+6

Answer:

250 mm = 0.00025 km.

Explanation:

250 mm equal 0.00025 km

Conversion details

To convert mm to km use the following formula:

1 mm equals 0.000001 km

So, to convert 250 mm to km, multiply 0.000001 by 250 i.e.,

250 mm = 0.000001 * 250 km = 0.00025 km

(hope this helps can i plz have brainlist :D hehe)

Yes, a virtual image can be projected onto a screen with the help of additional lenses or mirrors.

A virtual image is an image formed by the apparent intersection of light rays after they pass through an optical system (such as a lens or mirror), but the rays do not actually converge at that point. Instead, they only appear to diverge from a virtual location.

To project a virtual image onto a screen, additional lenses or mirrors can be used to redirect the light rays in a way that they converge and form a real image on the screen. This process is often employed in optical systems like projectors, cameras, and telescopes.

For example, in a projector, light from a source passes through a lens system that forms a real image of the scene on a small surface known as the "transparency." Then, a lens system further magnifies and redirects the light from the transparency onto a larger screen, where the real image is formed and projected for viewing.

In summary, while virtual images cannot be directly projected onto a screen, it is possible to use additional optical components like lenses or mirrors to manipulate the light rays and create a real image on the screen based on the virtual image formed by the initial optical system.

Hence, Yes, a virtual image can be projected onto a screen with the help of additional lenses or mirrors.

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Yes it is true  ,A broad group of actions with the intention of assisting others includes helping, sharing, providing comfort, contributing or volunteering, and cooperating.

Research on prosocial conduct has looked at the potential causes and effects of these behaviors as well as the various reasons that might be at play. Prosocial Behavior's Type 3. The factors. Actions that "benefit other people or society as a whole," such as assisting, sharing, contributing, cooperating, and volunteering, are considered prosocial conduct, also known as "voluntary behavior intended to benefit another." Evidence demonstrates that prosociality is essential to social groupings' wellbeing on a variety of measures. Empathy has significant evolutionary roots and is a powerful motivator of prosocial action. Children benefit from the development of desirable qualities fostered by prosocial activity.

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Answer:

Convergent boundaries. When two plates collide and one is pushed over the other, forming a mountain.

Answer:

1.

2.

Explanation:

1. KE = 1/2mv^2

= 1/2 (12)×5^2

= 6× 25

KE = 150j

2. KE = 1/2 mv^2

100j = 1/2m(5)^2

2(100j) = m×25

m = 200÷ 25

m = 8 kg

hope it helps

Strength training may help you control or lose weight. Strength exercise boosts your metabolism and burns more calories.

Strength training is essential for increasing flexibility, mobility, performance, and injury prevention. you don't need to spend hours at the gym to see results.

In the comfort of your own home, we'll teach you the fundamentals of strength training. A full-body strength-building workout will take only nine minutes of effort. Grab a towel and prepare to feel powerful.

The advantages of strength exercises will be as follows;

1. Strength training may help you control or lose weight,

2. Strength exercise boosts your metabolism and burns more calories.

3. Improve your quality of life and your capacity to do daily tasks.

4. Strength exercise can also help to keep your joints healthy.

Hence strength training may help you control or lose weight. Strength exercise boosts your metabolism and burns more calories.

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Answer:

Other one is wrong, this one I got 100% on.

Explanation:

Protection – Protect the wounded area with a support or something similar. this means after an injury has happened, use tools or simple objects to cover and protect the injury so nothing else can harm or get into the injury.

Rest – Do not continue to exercise while your wound is healing. It may take a few weeks or months to recover. You may need crutches or a sling. This means take the time to give your body the rest and relaxation it needs in order to be strong and healthy again.

Ice – Wrap a bag of ice or a bag of frozen peas in a towel and apply it to the wounded area for 15–20 minutes every two to three hours. As it states, ice can help recover an injury or make the swelling and pain go away, this will also help you stay relaxed and calm

Compression – Apply elastic compression bandages to the wounded area during the day to reduce swelling. Compression greatly helps stop any blood or fluid from leaving the body, using the compression method closes an open wound and uses pressure to keep the wound closed

Elevation – Make sure the injured body part is elevated above the height of your heart as much as possible to help reduce swelling. This is also important, elevation helps keep swelling down and help keeps unwanted blood out of the wound

The city of Charleston, WV will have the largest gravitational field strength.

The space around a material object in which its gravitational force can be experienced is known as gravitational field.

The gravitational field strength at a point in this field is the force experienced on unit mass placed at that point.

Here,

The data obtained at different geographical locations of earth are given in the table. The latitude of the geographical areas are provided.

Gravitational field strength,  I = -GM/r²

i.e, it follows the inverse square law.

The variation of gravitational field strength with change in latitude has been studied and the studies proved that:

As an  object moves away from the surface of earth, the gravitational force  between the object and earth decreases and therefore the gravitational field strength also decreases.

Therefore considering the latitudes of the geographical places mentioned, the place at the lowest latitude will have the strongest gravitational field strength. Charleston, WV will have largest gravitational field strength.

Hence, Charleston, WV which is at the lowest latitude will have the strongest gravitational field strength.

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Answer:

The Speaker of the House is responsible for administering the oath of office to the Members of the U.S. House of Representatives, giving Members permission to speak on the House floor, designating Members to serve as Speaker pro tempore, counting and declaring all votes, appointing Members to committees, sending bills Explanation:

Explanation:

Average speed=distance/time

=20/40

=0.5m/s

From the calculation and based on the Pythagoras theorem, the monkey will climb 4.5 m.

The Pythagoras theorem is based on the sides of the right angled triangle. It states that the square of the longest side is equal to the square of the other two sides.

Thus;

c= √3^2 + 3.4^2

c = 4.5 m

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Answer:

1298.5watt

Explanation:

Power is defined as the rate at which work is done

Expressed mathematically as;

P = F × d/ t; F = force or weight of object ;d is height or distance sustain and t is time covered

Hence for 1 person the power consumption is ;

Note weight =mass× acceleration of free fall due to gravity,g

g is known as 9.8m/S2

Time taken is 1min which is 60 sec

60 ×9.8 × 5.3/60 = 51.94 watt

Hence for 25 persons we have

25 × 51.94 =1298.5watt

1.3kilo watt( kilo is 1000)

The work done by the escalator is 3,080.4 joules and the power requirement of the escalator to move 25 passengers every minute is approximately 51.34 watts.

The Work Done is calculated as:

Force (F) = 60 × 9.8

Distance (d) = 5.30 meters

Work (W) = F × d

Work (W) = (60 × 9.8) × 5.30

Work (W) = 3,080.4 joules

The Power is calculated as:

Time (t) = 1 minute

Power (P) = Work / Tim (t)

Power (P) = 3,080.4 / 60

Power (P) = 51.34 watts

Therefore, the power requirement of the escalator to move 25 passengers every minute is approximately 51.34 watts.

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Answer:

500.3 Bq

Explanation:

From the formula;

0.693/t1/2 = 2.303/t log (Ao/A)

Where;

t1/12 = half life = 5 years

Ao = initial activity = 2000 Bq

0.693/5 = 2.303/10 log (2000/A)

0.1386= 0.2303  log (2000/A)

0.1386/0.2303 =  log (2000/A)

0.6018 = log (2000/A)

(2000/A) = Antilog (0.6018)

(2000/A) = 3.9976

A = 2000/3.9976

A = 500.3 Bq

Answer:

You can use a block and an inclined plane (just a tilted board)

Place the block on the plane and gradually increase the angle the plane makes with the horizontal.

Static friction will keep the block in place (no sliding) until the angle between the plane and the horizontal is large enough. The block will now slide but is still under the influence of kinetic friction. Thus static friction is greater than sliding friction.

Explanation:

The force exerted by our foot on the sand is less because time taken is large so it is difficult to run fast on sand.

hope it will help you

Answer:

All atoms have a dense central core called the atomic nucleus. Forming the nucleus are two kinds of particles: protons, which have a positive electrical charge, and neutrons, which have no charge. All atoms have at least one proton in their core, and the number of protons determines which kind of element an atom is.

Explanation:

Answer:

sorry I needed points to ask my question

Answer:

The ram has done more work because the rate at which the ram work is 1.6m/s and Hari is 1.1m/s

We can see here that most living get the energy they need for life either from food or sunlight.

Energy is closely related to the concept of work. When work is done on an object, energy is transferred to that object, resulting in a change in its motion or state. Conversely, when work is done by an object, it transfers energy to another system or object.

When it comes to meeting their energy requirements, most organisms rely on consuming food, which contains stored chemical energy derived from various sources such as plants, other animals, or organic matter. By breaking down complex molecules in food through digestion, organisms release the energy necessary for their growth, maintenance, and metabolic activities.

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