what condition is necessary for heat to flow between two objects?

Answer:

8.87 m/s^2

Explanation:

Answer:

62.6 degrees fahrenheit

The formation of the solar system was a complex and dynamic process that took place over millions of years.

It is believed that a nearby supernova explosion or shock wave triggered the collapse of this cloud, causing it to contract and spin faster. As it spun, the cloud flattened into a disk with a dense center, which eventually formed the Sun.

As the disk continued to spin, it began to cool and dust particles started to clump together, forming small grains. These grains collided and stuck together, gradually growing larger and forming planetesimals.

The inner planets, including Mercury, Venus, Earth, and Mars, formed from materials that were more heat-resistant, such as rocks and metals. The outer planets, including Jupiter, Saturn, Uranus, and Neptune, formed from materials that were more volatile, such as ices and gases.

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Answer: It has the skill to nest

sorry if I'm wrong

Answer:

B: A colorful beak

Explanation:

i hope this helped!

The true meaning of IQ Intelligence Quotient, which is a measure of an individual's cognitive abilities or intellectual potential.

IQ tests are designed to assess various aspects of cognitive functioning, such as problem-solving, abstract reasoning, memory, and perceptual speed. The true meaning of IQ is a subject of ongoing debate among psychologists and researchers. Some experts view IQ as a reliable and valid measure of intelligence, while others argue that it has limitations and may not capture the full range of human intellectual abilities. IQ scores are typically standardized, with a mean score of 100 and a standard deviation of 15 points. This means that the majority of people score between 85 and 115, while scores above 130 are considered high and scores below 70 are considered low. It is important to note that IQ scores do not reflect an individual's entire range of abilities, nor do they determine a person's success or potential in life. Many factors, such as motivation, emotional intelligence, creativity, and social skills, can also contribute to an individual's overall success and well-being. Furthermore, IQ tests have been criticized for their potential cultural and social biases, as well as their limited ability to capture certain types of intelligence, such as emotional intelligence or practical intelligence. As such, IQ scores should be interpreted with caution and used in conjunction with other measures of intellectual and personal functioning.

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Answer:

77 degrees fahrenheit

Explanation:

Correct me if im wrong

While whirling a can (or any object attached to a string) in a circular path, the direction of the force exerted on the can is toward the centre of  circular path. This force is called the centripetal force.

Centripetal force is a force that acts on an object moving in a circular path and is directed toward the centre of the circle. It is what keeps the object moving in a circular path and prevents it from flying off in a straight line.

The magnitude of the centripetal force is proportional to the mass of the object, it's  velocity, and the radius of the circular path. It can be calculated using the equation[tex]F = mv^2/r[/tex], where F is the centripetal force, m is the mass of the object, v is its velocity, and r is the radius of the circular path.

For example, while going around a curve in a car, the friction between the tires and the road provides the necessary centripetal force to keep the car moving in a circular path. Another example is a planet moving in orbit around the sun, where the gravitational force of the sun acts as the centripetal force.

In the case of a can attached to a string, the centripetal force is provided by the tension in the string. The string provides the necessary inward force to keep the can moving in a circular path, and the tension in the string is proportional to the centripetal force.

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i think the stopping force would be different as a haystack has less friction whilst the brick wall would have more friction

Explanation:

When the masses of two point masses increase while the distance between them remains constant, the gravitational force between them increases proportionally to the square of the increase in mass.

Gravitational force is the force of attraction between two masses. It is one of the four fundamental forces of nature and is responsible for the motion of celestial bodies, such as planets and stars, as well as the behavior of objects on the surface of the Earth.

The force of gravity between two masses can be described by Newton's law of universal gravitation, which states that every particle in the universe attracts every other particle with a force proportional to the product of their masses and inversely proportional to the square of the distance between them.

The formula for the gravitational force is given by Newton's law of universal gravitation:

F = G * (m1 * m2) / d^2

where:

F is the gravitational force between two masses

G is the gravitational constant (G = 6.67 x 10^-11 N m^2/kg^2)

m1 and m2 are the masses of the two objects

d is the distance between the centers of the two masses.

The gravitational force between two point masses is given by the formula:

[tex]F = G * (m1 * m2) / d^2[/tex]

where G is the gravitational constant and m1 and m2 are the masses of the two objects.

If the masses of the two point masses are increased from m to 3m, then the new formula for the gravitational force becomes:

[tex]F' = G * (3m * 3m) / d^2 = 9 * (G * (m * m) / d^2)[/tex]

Thus, the gravitational force between the two point masses is increased by a factor of 9 when the masses are increased to 3m.

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If the posted rates for cab fare are $4 plus $1 per mile, then the passenger can travel 11 miles in the cab for $15.

The given data is as follows:

The general fare rate of the cab  is $4

The cost per each mile is $1

Total remaining cash available = $15

let us assume that n is the number of miles that passenger travel in the cab

From the above-given information, we can write the equation as follows:

Total money = Cost of fare + cost per mile

$15 = $4 + $1(n)

1(n) = 15-4

n = 11/1

n = 11 miles.

Therefore, we can conclude that the passenger can travel 11 miles in the cab for $15.

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Answer:

18.333 degrees celsius

Explanation:

Correct me if im wrong

65 degrees Fahrenheit is equal to 18.33 degrees Celsius.

Celsius (°C) and Fahrenheit (°F) are two different temperature scales used to measure temperature. The Celsius scale is widely used in most countries around the world, while the Fahrenheit scale is primarily used in the United States and a few other countries.

To convert 65 degrees Fahrenheit to Celsius, the following formula is used:

°C = (°F - 32) × 5/9

°C = (65 - 32) × 5/9

°C = 33 × 5/9

°C = 165/9

°C = 18.33

Therefore, 65 degrees Fahrenheit is approximately equal to 18.33 degrees Celsius.

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A cardiac defibrillator can be modeled as a parallel plate capacitor, Capacitance of the defibrillator is 1 F. Hence, the correct option is (E).

The energy stored in a capacitor is given by the equation:

E = 1/2 * C * V^2

where E is the energy in joules, C is the capacitance in farads, and V is the voltage across the capacitor in volts.

We are given that the defibrillator has a stored energy of 1 kJ (1000 J) when charged to a voltage of 2 kV. Substituting these values into the equation, we get:

1000 J = 1/2 * C * (2 kV)^2

Simplifying this equation, we get:

C = 1000 J / (1/2 * (2 kV)^2) = 1 F

Therefore, the capacitance of the defibrillator is 1 F.

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The spring constant of the spring is 10,000 N/m.

The constant is a fixed value that does not change in response to external influences. It is often used in mathematics to represent a number that remains constant despite changes in the context or situation. In physics, constants are used to represent physical properties of matter, such as the speed of light or the force of gravity. In computing, constants are used to represent values that need to be used multiple times within a program. Constants can be used to improve code readability and maintainability, as well as to prevent errors associated with using the same value multiple times.

The spring constant, k, is a measure of how stiff the spring is; it is equal to the ratio of the force applied to the spring divided by the amount of displacement (or compression) of the spring. Therefore, the spring constant of the spring can be calculated as:

k = F/x

= 100 N/0.010 m

= 10,000 N/m

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The magnitude of the electric field between the plates of the capacitor when it is fully charged is 4500 V/m, which corresponds to option A.

The magnitude of the electric field between the plates of a parallel plate capacitor can be calculated using the formula:

E = V/d

Where

In this case, the voltage V is given as 9 V and the plate separation d is given as 2 mm (which can be converted to 0.002 m). Substituting these values into the formula, we get:

E = 9 V / 0.002 m

E = 4500 V/m

Therefore, the magnitude of the electric field between the plates of the capacitor when it is fully charged is 4500 V/m, which corresponds to option A.

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Option A. Radio telescopes usually make observations of very large regions of the sky. Option C. Radio telescopes are used to detect cool hydrogen. Option D. Radio telescopes have to be larger than optical telescopes, since radio waves are longer than visible light waves.

Option F. Radio waves can travel through obstacles that block out waves of visible light.

These statements are correct. The other two statements are incorrect. Interferometry can be used with radio telescopes to increase their resolution, and not all objects emit visible light, so radio telescopes can detect objects that are not visible in the optical spectrum. Radio telescopes are instruments used to detect radio waves emitted by astronomical objects in space. They are used to study a wide range of phenomena, from the cool hydrogen gas that permeates the universe to the high-energy radiation emitted by black holes and other exotic objects.

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Complete question:

Based on what you learned about radio telescopes, select all of the correct statements from the following list.

A. Radio telescopes usually make observations of very large regions of the sky.

B. The large size of radio telescopes make interferometery unnecessary.

C. Radio telescopes are used to detect cool hydrogen.

D. Radio telescopes have to be larger than optical telescopes, since radio waves are longer than visible light waves.

E. Since radio telescopes are so large, they have much better resolution than optical telescopes.

F. Radio waves can travel through obstacles that block out waves of visible light.

G. All objects emit visible light, so radio wavelengths just provide another way to look at them.

The correct option is A = 1897 N/m²

Given that,

Mass m=  20,300 kg.

Area A =105 m²

Pressure different between top and bottom

Assume the plane has reached a cruising altitude and is not changing elevation. The sum of the forces in the vertical direction is given as

∑Fy = Wp + FL = 0

where

Wp = is the weight of the plane, and

FL is the lift pushing up on the plane.

Let's solve for FL since the mass of the plane is given:

Wp + FL = 0

FL = -Wp

FL = -mg

FL = -20,300× -9.81

FL = 199,143N

FL should be positive since it is opposing the weight of the plane.

Let's Equate FL to the pressure differential multiplied by the area of the wings:

FL = (Pb −Pt)⋅A

where Pb and Pt are the static pressures on the bottom and top of the wings, respectively

FL = ∆P • A

∆P = FL/A

∆P = 199,143 / 105

∆P = 1896.6 N/m²

∆P ≈ 1897 N/m²

Hence  1897 N/m² is the correct answer.

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The electron's speed is measured in terms of the distance from the sphere's surface as -3.6 x 1028J.

We can find out an object's actual size by knowing how far away it is. The area an object occupies in space above us can be measured. Once we know how far away it is, we can calculate its true size.

Distance is an object's ultimate motion in an uninspired fashion. Regardless of the initial or concluding point, travel can be referred to as the amount of space an object having spanned.

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Infrared radiation has longer wavelengths compared to visible radiation, and lower energy per photon.

Infrared radiation (IR) is a type of electromagnetic radiation that is not visible to the human eye. It has a longer wavelength and lower frequency than visible light, and it is part of the electromagnetic spectrum that also includes radio waves, microwaves, visible light, ultraviolet radiation, X-rays, and gamma rays.

Infrared radiation is often associated with thermal radiation, which is the emission of electromagnetic waves from objects that are at a temperature above absolute zero. This is because infrared radiation is often emitted by objects that are warm, and it is this type of infrared radiation that is responsible for our ability to feel heat.

Infrared radiation has a wide range of applications, including in remote sensing, thermal imaging, and heating. For example, in remote sensing, infrared radiation can be used to observe and study the Earth and other celestial objects, as well as to detect and monitor changes in temperature, vegetation, and other physical properties. In thermal imaging, infrared cameras are used to detect heat signatures and create images based on temperature differences. In heating, infrared heaters use infrared radiation to heat objects and materials directly, rather than heating the air around them.

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Answer:

The velocity of the crossbow as it recoils is 5 m/s. This can be calculated using the conservation of momentum. The momentum of the system before the bow was triggered is 0 (since the bow is stationary). After launching the bolt, the momentum of the system is (0.10 kg * 25 m/s), so in order for the momentum of the system to remain constant, the crossbow must recoil with a momentum of (5.0 kg * -5 m/s).

The biker's kinetic energy at the bottom of the hill is 210 J.

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

So, as the biker travels down the hill, her potential energy (PE) transforms into kinetic energy (KE).

At the top of the hill, her PE is 360 J, and she loses 150 J to heat,

so her remaining energy is 360 J - 150 J = 210 J.

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Answer:

100 m

Explanation:

Δx = v₀t + 1/2at²

Δx = 0 + 1/2(2 m/s²)(10 s)² = 100 m

Health-related physical fitness is important for overall health and well-being. Health-related physical fitness can help improve an individual's quality of life and reduce their risk for certain diseases.

The quality of something is its level of excellence. It is a measure of how good something is compared to other things of the same type, and it is usually judged by an expert or by public opinion. Quality is subjective and can be difficult to define. Generally, it is determined by the degree to which something meets its intended purpose, is aesthetically pleasing, or is unlikely to cause harm. Quality is also determined by the level of craftsmanship, materials, and effort that goes into creating something, as well as the amount of care that is taken to ensure that it meets the highest standards. Quality is important as it can affect a product or service's success and it can also impact a person's satisfaction with a purchase.

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The altitude of the satellite above the surface of the Earth is 1,528.48 km. The given parameters; are the speed of the satellite, v = 6.9 km/s. the radius of the Earth, R = 6370 km.

A radius is a measure of distance from the centre of any circular object to its outermost edge or boundary. A radius is not only a dimension of a circle but also for a sphere, semi-sphere, cone with a circular base, and a cylinder having circular bases.  

A circle can be defined as the locus of a point moving in a plane, in such a manner that its distance from a fixed point is always constant.

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Temperature of 73 °F is equivalent to 22.78 °C.

The physical concept of temperature indicates in numerical form how hot or cold something is. A thermometer is used to determine temperature.

Temperature conversion is a specific process of converting a given temperature from one temperature scale to another. In this case, we are converting from Fahrenheit (°F) to Celsius (°C).

The formula to convert from Fahrenheit to Celsius is:
°C = (°F - 32) × 5/9

Using this formula, we can convert 73 °F to °C:
°C = (73 - 32) × 5/9
°C = 41 × 5/9
°C = 22.78

So, 73 °F is equivalent to 22.78 °C.

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Wendy riding her bike in a circle in the parking lot is a change in direction, but her speed is constant, so her velocity is not changing. Amber sitting on a park bench and Jessica walking her dog along Chestnut Avenue are both stationary, so there is no change in velocity.

What is Velocity?

It is defined as the change in position of an object over a unit of time, usually measured in meters per second (m/s) or kilometers per hour (km/h), in a specific direction.

In physics, velocity is distinguished from speed, which is the magnitude of an object's velocity but without regard to its direction. Velocity is a more precise term than speed because it includes both magnitude and direction. For example, a car traveling at 60 km/h east has a different velocity than a car traveling at 60 km/h west.

Velocity is a fundamental concept in many areas of physics, including mechanics, thermodynamics, and electromagnetism. It is used to describe the motion of objects ranging from subatomic particles to celestial bodies in the universe.

The only option that shows a change in velocity is Ken driving on Interstate 4 at 65 mph. This is because velocity is a vector quantity that includes both speed and direction. As Ken is driving, he is changing his direction or speed, or both, which means his velocity is changing.

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The tendency of an object to resist a change in velocity is called inertia. It is the resistance of an object to a change in its direction or speed of motion.

This property of matter is explained by Newton's First Law of Motion, which states that an object at rest or in motion will remain in that state unless an external force acts on it.

Inertia is the basis for the concept of momentum, which is the product of an object's mass and velocity.

When an object is in motion, it has momentum and is resistant to any change in its velocity. This is because it has inertia, which is the tendency of an object to resist a change in motion.

Inertia is an important concept in physics and is essential for understanding the motion of objects in the universe.

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When the pressure is 300 mmHg, the gas has an 800 cc volume.

According to this, a gas's volume drops as pressure on it rises at a constant temperature. In other words, while the temperature and the quantity of molecules are both constant, Boyle's law states that volume is inversely proportional to pressure.

The answer to the dilemma is that at constant temperature, the relationship between the gas's volume (V) and pressure (P) is inverse.

V ∝ 1/P

or

V = k/P

V = 1200 cc when P = 200 mmHg

These values are put into the formula above to get the following results:

1200 = k/200

k = 240000

V = 240000/300

V = 800 cc.

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The given statement that when resonance occurs, there is a dramatic decrease in the amplitude of a sound wave is false.

Resonance happens when a sound wave's frequency coincides with an object's inherent frequency, increasing the sound wave's amplitude.

Standing waves may develop in the tube as a result of resonance, which amplifies the vibrations' amplitude. The resonant frequencies depend on how long the air column is. The resonating air column amplifies solely the natural frequencies, as opposed to the mouth or reed which produce a combination of diverse frequencies.

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The three conditions necessary for a lunar or solar eclipse are as follows:

When one celestial body partially or entirely blocks out the light from another celestial body, the occurrence is known as an eclipse. Solar eclipses and lunar eclipses are the two primary categories of eclipses.

For a lunar eclipse, the Earth is positioned between the Sun and the Moon and the Moon must be on the other side of the Earth from the Sun during a full moon for the alignment to take place. For a solar eclipse, the Moon is positioned between the Sun and the Earth and the Moon must be between the Earth and the Sun during a new moon for the alignment to take place.

Therefore, The three conditions necessary for a lunar or solar eclipse are as follows:

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