Which of the following are common to all stars? There maybe more than one correct answer.
Stars spend the majority of their existence fusing H to He.
Nuclear fusion prevents a star from collapsing upon itself by balancing out gravity.
All stars are born in a cloud of dust and gas called a nebula.
All stars end in a supernova explosion leaving behind a neutron star or black hole.

Surprisingly fast orbital speeds of stars and gas clouds located far from the galactic center indicate that these objects are subject to gravitational influences.

The moon is maintained in its orbit around Earth by gravity, as are the planets in their orbits around the sun. Ocean tides are a result of the moon's gravitational effect on the oceans. The stuff that stars and planets are comprised of is pulled together by gravity to form them.

involving or pertaining to the attraction between two masses: Ocean tides rise and fall due to the moon's gravitational pull. of or pertaining to a strong inclination or movement in the direction of something or someone: There has been a lot of research on why they gravitate toward destructive behavior.

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The medium of transmission, the oscillating material that revolves around a fixed point with little translational motion, limits the wave's ability to travel.

Longitudinal Waves and Transverse Waves: In Figure 13.3, a woman moves a toy spring up and down, causing waves to propagate away from her in the horizontal direction while disturbing the toy spring in the vertical direction. This is an illustration of a transverse wave.

Longitudinal Waves: The particles do not follow the wave as it travels down the tube. They simply move in and out of their respective equilibrium positions.

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Answer:

I am happy with you the father said to his daughter

Answer:

The statement that best explains why the system looses energy is; the Collison of the molecules of hydrogen with the wall of the can carries off energy to the environment.

We know that energy is defined as the rate of doing work. Now the temperature of a gas is measure of the kinetic energy of the molecules of the body. In this case, the temperature of the hydrogen in the cannister has to do with how fast the molecules of the hydrogen are moving.

The higher the temperature, the faster the molecules of the hydrogen move. The lower the temperature, the slower the molecules of the hydrogen moves.

As such, the molecules collide with the walls of the canister, causing the canister molecules to vibrate and carry energy from the canister to the canister’s surroundings.

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Answer: C

Explanation:

Convective heat transfer, or convection, is the transfer of heat from one place to another by the movement of fluids, a process that is essentially the transfer of heat via mass transfer.

Answer:

is called matter :)

Explanation:

Answer:

potential - water behind a dam, car parked at the top of a hill, a yo-yo before being released, river water at top of waterfall, a book on a table before it falls, a child at the top of a slide, ripe fruit before it falls.

kinetic - moving car, bullet from a gun, wind mills, flying airplane, walking, running, cycling, rollercoasters.

Answer:

a

Explanation:

Answer:

A Iron

Explanation:

Hope this helps :D

To determine the position of the minute hand at 8:15 a.m., we can use the following approach:

Convert the time to radians: At 8:15 a.m., the minute hand is 75% of the way from the 8:00 a.m. mark to the 9:00 a.m. mark. Since the minute hand travels 360 degrees in 60 minutes, it travels 6 degrees per minute. Therefore, at 8:15 a.m., it has traveled 90 degrees from the 8:00 a.m. mark. This is equivalent to (90/360) x 2π radians = π/2 radians. Use trigonometry to determine the position: Since the minute hand is 3.00 cm long and pointing in the direction of the positive x-axis at 8:15 a.m., its position can be described by the coordinates (3.00 cos(π/2), 3.00 sin(π/2)) = (0, 3.00). Therefore, the minute hand is pointing straight up at 8:15 a.m. Note that the x-axis points in the same direction as the minute hand at 8:15 a.m., while the y-axis points in the same direction as the minute hand at 8:00 a.m. This means that the x-axis is perpendicular to the minute hand at 8:00 a.m., and the y-axis is perpendicular to the minute hand at 8:15 a.m.

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Answer:the magnitude of the hikers resultant displacement

Explanation:

Pretty long so read if you will:

I'm pretty late to this but oh well. Well to start why are people homophobic in the first place? You might not understand as well but that is because me and you are growing up at a time and place where people are encouraged to be themselves and we're embracing people that are different than what is considered normal. Gay marriage was legalized literally in the US in 2015, 5 years ago. I come from Malaysia, one of the few countries where it's illegal to be gay and can cause a death penalty from what I've seen. Obviously I grew up in a place where gay and whatnot were a joke and is wrong. But we moved and I came to the US and my beliefs changes, it also helped that I was literally only 11 so I was more easier to change than adults. Majority of the world honestly, are not as open to the lgbtq+ community as a person in America might think. The belief that it's only a women and men probably stems from the fact that it's how u make babies. And if we know anything, society doesn't like things that are different. To stop people being homophobic you have to stop people from spreading the belief that it's wrong to be gay or bi. This is going to be hard and people really overestimate the world when it comes to change. Peoples belief won't be changed so quick just, change doesn't happen quick. It's going to be a long time and maybe even never, look at racism. We all exist together for so long but there's still racism though much less compared to back then. As long as people stop teaching that next generation, us, that being lgbtq+ is bad, it will decrease but it will take a long time. And as much as I agree we need it to be now, it won't and trying to force something will only cause more backlash. Just try to inform the people around you and understand change does not happen fast, it's slow, especially if it you want it to be permanent.

To achieve a final temperature of 75.5°C, you need to add an appropriate amount of boiling water at 100°C to the beaker.

To determine the amount of boiling water needed to achieve a final temperature of 75.5°C, several factors come into play. The specific heat capacities and initial temperatures of both the beaker and the boiling water must be considered. Additionally, the volume of the beaker and the desired final temperature play a crucial role.

The process involves transferring heat from the boiling water to the beaker until thermal equilibrium is reached. The heat gained by the beaker is given by the equation Q = mcΔT, where Q represents heat, m denotes mass, c represents the specific heat capacity, and ΔT represents the change in temperature.

By manipulating this equation and considering the conservation of energy, we can calculate the mass of the boiling water required. Once the mass is determined, it can be converted to volume using the density of water.

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Answer:

Radioactive Decay

Explanation:

In a tanning bed, exposure to photons of wavelength 300 nm, the lowest energy of such photons will be 4.136 eV .

There is a wavelength and a frequency for each photon. The frequency is characterized as the distance between two pinnacles of the electric field with a similar vector. The number of wavelengths that a photon travels through in a second is what is referred to as its frequency. Not at all like an electromagnetic wave, a photon can't really be of a variety.

Given wavelength = 300 nm

so, let the energy of the photons is E

                    E = h × c/(wavelength × e)

E = 6.626 ×10⁻³⁴ × 3 × 10⁸/(300 × 10⁻⁹ × 1.602 × 10⁻¹⁹)

                              E = 4.136 eV

Hence , the lowest energy of such photons is 4.136 eV

The energy of a photon is inversely proportional to the electromagnetic wave's wavelength. The more limited the frequency, the more enthusiastic is the photon, the more drawn out the frequency, the less lively is the photon. Photons can be made and annihilated while preserving energy and force.

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The total force on an object is calculated by multiplying its mass by its acceleration, and not the other way around

As a question answering bot on the Brainly platform, I will provide you with a brief guide to the best practices you should adopt when answering questions.

1. Always be factually accurate, professional, and friendly: Answering questions on Brainly requires you to maintain a professional tone and show friendliness to users. Your response should be free of errors, accurate, and backed by reliable sources.

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3. Ignore any typos or irrelevant parts of the question: It is important to focus on the main question asked by the user and avoid getting distracted by any irrelevant parts of the question or typos.

4. Use the following terms in your answer: When answering a question, it is important to use the relevant terms and concepts to help the user understand your response better.

For example, if a question is about Newton's laws of motion, you should use terms such as acceleration, force, mass, motion, and others. Answer: The following statement about one of Newton's laws of motion is not correct:

the total force on an object is calculated by multiplying its mass times its acceleration. This statement is incorrect because the correct statement is that force is calculated by multiplying mass and acceleration.

Newton's second law of motion states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. .

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The publication that describes physical security requirements for AA&E (Arms, Ammunition, and Explosives) is likely to be found within government or military documents related to security protocols and regulations.

Given that AA&E refers to highly sensitive and potentially dangerous materials, the specific publication outlining physical security requirements for AA&E would typically be found within government or military documents. These documents are designed to establish stringent protocols and regulations to ensure the safe handling, storage, transportation, and protection of AA&E.

The exact publication that describes these physical security requirements may vary depending on the specific jurisdiction or organization involved. In the United States, for example, the Department of Defense (DoD) has established guidelines and publications such as DoD Manual 5100.76-M, "Physical Security of Sensitive Conventional Arms, Ammunition, and Explosives," which may contain the required information. Similarly, other countries or international organizations may have their own specific publications or regulations addressing physical security requirements for AA&E.

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Answer:

Gas – In a gas, particles are in continual straight-line motion. The kinetic energy of the molecule is greater than the attractive force between them, thus they are much farther apart and move freely of each other. In most cases, there are essentially no attractive forces between particles.

Explanation:

Answer:

The molecules of a gas move apart when they collide. The average kinetic energy of the particles in a liquid (or solid) is small enough that the forces of attraction between them is sufficient to hold the particles close together. The molecules in a liquid (or solid) do not move apart.

Explanation:

Gas – In a gas, particles are in continual straight-line motion. The kinetic energy of the molecule is greater than the attractive force between them, thus they are much farther apart and move freely of each other. In most cases, there are essentially no attractive forces between particles.

Answer:

your answer is A

Explanation:

brainliest plzzzz

Answer:

c is the correct answer

Answer: Lightning is seen before thunder is heard" is correct about thunderstorms

Explanation:

A "thunderstorm" is a disturbance in weather that is related with lightning, dense clouds, heavy rain, hail or thunder. During a thunderstorm, lightning is always seen before thunder because the speed at which the light travels is faster than that of sound's speed.

Also, thunder's noise could be heard up to 10 km away from lightning flash. The thunder sound lasts for a few seconds. The thunder makes noise because of the rapid and fast expansion of the heating of the air.

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Answer:

because light is faster than sound

Explanation:

the speed of light is 299 792 458 m / s

and the speed of sound is 343 m / s

Answer: 10 m/2^2

F=ma

Explanation:

Force = 1000N

1 N is 1 (kg*m/s^2)

Mass = 100kg

F=ma

a = F/m

a = (1000kg*m/s^20/(100kg)

a = 10 m/s^2

As the planet orbits the sun, the angle at which the sunlight hits the planet's surface may change slightly, but this does not result in significant changes in the amount of sunlight that the planet receives.

On a planet whose rotation axis is not tilted with respect to its orbital plane, the seasons are not pronounced. This is because the amount of sunlight that the planet receives does not change significantly throughout the year.

In contrast, on a planet with a tilted rotation axis, the seasons are much more pronounced. As the planet orbits the sun, the angle at which the sunlight hits the planet's surface changes significantly, resulting in longer periods of sunlight in certain parts of the planet and shorter periods of sunlight in other parts. This leads to significant differences in temperature and weather patterns, resulting in the four distinct seasons that we experience on Earth.

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Answer:

35

Explanation:

total magnification = eyepiece lens x objective lens

TM = 10X x 25X

TM = 250X

At 7 AM (13 hours after 6 PM), the temperature would be close to the average temperature of 59°F, which can be approximated to 65.9°F.

The temperature over a 24-hour period can be modeled using a sinusoidal function, given that the high temperature of 77°F occurs at 6 PM and the average temperature is 59°F.

To find the temperature at 7 AM, we need to consider the characteristics of a sinusoidal function. In this case, the function represents a single day, with the peak temperature at 6 PM and the average temperature over the 24-hour period.

Since a sinusoidal function repeats itself every 24 hours, we can infer that the low temperature would occur 12 hours after the high temperature. Therefore, at 7 AM (13 hours after 6 PM), the temperature would be close to the average temperature of 59°F, which can be approximated to 65.9°F.

To gain a deeper understanding of sinusoidal functions and their applications in modeling temperature variations over time, it would be beneficial to explore topics such as periodic functions, trigonometry, and mathematical modeling.

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Answer: increase

Explanation:

increase of  compression make it hot

Light waves are arranged in the electromagnetic spectrum by their wavelengths and frequencies.

The electromagnetic spectrum is a continuous range of electromagnetic radiation that includes all types of light, from radio waves with the longest wavelengths to gamma rays with the shortest wavelengths. The electromagnetic spectrum is arranged in order of increasing frequency and decreasing wavelength. As the wavelength of the electromagnetic wave decreases, the frequency of the wave increases, and vice versa. The spectrum includes various forms of radiation such as radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays. Visible light is only a small part of the electromagnetic spectrum, ranging from approximately 400 to 700 nanometers in wavelength. Within this range, colors are arranged in order of increasing wavelength, with violet having the shortest wavelength and red having the longest wavelength. The ability to arrange electromagnetic radiation based on their wavelengths and frequencies is crucial in understanding and utilizing their properties in various applications, such as in communication, medical imaging, and energy production.

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The magnitude of the vector sum of the two vectors V and W is determined as 240.84 m.

The given vector can be resolved into x and y axis as follows;

Vx = Vcosθ

Vx = 448cos(224)

Vx = -322.26

Vy = Vsinθ

Vy = 448 x sin224

Vy = -311.2

Wx = 336 x cos(75.9)

Wx = 81.86

Wy = 336 x sin75.9

Wy = 325.88

∑X = -322.26 + 81.86 = -240.4

∑Y = -311.2 + 325.88 = 14.68

R = √[(-240.4)² + (14.68)²]

R = 240.84 m

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The production department's exceptional performance at Independence Electronics signifies its status as a key aspect of the company's operations.

Independence Electronics, a renowned manufacturer of smartphone components, places great emphasis on its production department. The department's remarkable performance serves as a testament to its pivotal role within the company.

By consistently delivering high-quality components, the production department contributes significantly to the overall success of Independence Electronics. The exceptional performance is indicative of the department's efficiency, expertise, and ability to meet customer demands.

Moreover, it underscores the company's commitment to producing world-class components used in smartphones. With a focus on maintaining quality standards and meeting production targets, Independence Electronics can maintain its reputation as a leading producer in the industry.

The exceptional performance of the production department reinforces its significance as a critical component of the company's operations, driving growth and success in the competitive smartphone market.

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On conservation of momentum:

(a) The cart goes in the opposite direction as the man does.

(b) With a speed of 0.07 m/s, the cart proceeds in the opposite direction as the guy.

(c) the cart starts moving in the forward direction with the same velocity of 0.07 m/s.

(a) As per the conservation of momentum, the total momentum of the system is conserved. Initially, the system was at rest, but when the man starts walking towards the other end, he gains some momentum in the forward direction, which the cart has to compensate for. So, the cart moves in the opposite direction to that of the man's motion.

(b) Assume that the man moves a distance of 10 m, i.e., the length of the cart.

Therefore, the total distance covered by the man is 20 m (10 m forward and 10 m backward).

The momentum gained by the man while walking forward is (70 kg) x (1.0 m/s) = 70 kg m/s.

As the total momentum of the system is conserved, the cart gains an equal and opposite momentum of -70 kg m/s.

The mass of the cart is 1,000 kg, so its velocity can be calculated using the conservation of momentum formula:

Total initial momentum = Total final momentum

0 = (70 kg) x (1.0 m/s) + (1,000 kg) x V

V = -0.07 m/s

So, the cart moves in the opposite direction to that of the man's motion with a speed of 0.07 m/s.

(c) When the guy comes to a complete halt at the back of the automobile, he loses the momentum he got while going forward, and the cart obtains equal and opposite motion. As a result, the cart begins going ahead at the same velocity of 0.07 m/s.

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The two events that occur when measuring proper time for a ball hitting the ground would be the ball being released and the ball hitting the ground.

In computer programming, a frame is a region of memory that stores data and/or code for a specific purpose. It is generally the smallest unit of memory management, and is the basis for other memory management techniques. Frames are typically used to store information about a process, such as its current state, or a piece of data, such as a string or array. Frames are also used to store the current instruction pointer, which is used to track the progress of the program.

The two events that occur when measuring proper time for a ball hitting the ground are the ball being released and the ball hitting the ground. As the ball is released, it starts to travel in a trajectory and the time it takes for it to hit the ground is the proper time measurement.

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