What is speed and what is velocity?

Galaxy is "all-encompassing" of the other words given so it doesn't belong.

A galaxy is a collection of stars, stellar remnants, interstellar gas, dust, and dark matter that is gravitationally bound. The name comes from the Greek word galaxias, which translates to mean "milky" and refers to the Milky Way galaxy, which houses the Solar System.

Given in the question  word doesn't belong: planet, galaxy, sun, moon

So, we can see "galaxy" is "all-encompassing" of the other words given, so it does not belong.

Galaxy is "all-encompassing" of the other words given so it doesn't belong.

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Final answer:

To multiply an input force in a hydraulic system, the input end should have a smaller area. This allows for a larger output force through Pascal's law, which is a principle used in hydraulic systems to provide a mechanical advantage.

Explanation:

To multiply an input force in a hydraulic system, the input end should be the one having the smaller area. When a force is applied to a small area, the resulting pressure is transmitted through the hydraulic fluid to a larger area on the output end, resulting in a greater output force. This principle is based on Pascal's law, which states that pressure in an enclosed fluid is transmitted undiminished in all directions.

Your hydraulic system will give you a mechanical advantage by applying the input force on a smaller area to output a greater force on a larger area. For example, applying a 100-N force on the smaller input piston can produce a 500-N force on the output piston if the output piston is five times larger in area.

Hydraulic systems are often compared to simple levers, but have the benefit that they can transmit forces through complex paths, allowing diverse applications from brakes in vehicles to heavy lifting in industrial settings.

Astronauts orbiting earth experience a fraction smaller gravitational force (Fgrav) as compared to the force on Earth's surface. They are in a state of continuous freefall which gives the impression of weightlessness, not because gravity is absent.

The force experienced by astronauts orbiting the Earth, notably, is actually a fraction smaller than the gravitational force (Fgrav) experienced on Earth's surface. However, it is a common misunderstanding that astronauts in orbit experience zero gravity. Though it might appear they are weightless and therefore not subject to gravity, this is not the case. They are in a state of continuous freefall towards the Earth. The sensation of weightlessness is because they're in freefall, not because gravity is absent. The effect of gravity diminishes as distance from the Earth increases, hence why the gravitational force is a fraction smaller.

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The purpose of biofeedback is to help subjects "control their internal processes".

Biofeedback is a kind of treatment that utilizes sensors joined to your body to gauge key body capacities. Biofeedback is expected to enable you to take in more about how your body functions. This data may assist you with developing better power over certain body capacities and address wellbeing concerns.  

This feedback causes you center around rolling out inconspicuous improvements in your body, for example, loosening up specific muscles, to accomplish the outcomes you need, for example, decreasing agony. Generally, biofeedback enables you to utilize your musings to control your body, frequently to enhance a wellbeing condition or physical performance.

Answer:

a=0 m/s2

Explanation:

t=3,7 h=13320 s

v=const=71 km/h=19,7222 m/s ( 71*1000 m/2600 s=19,7222222 m/s)

if the speed is constant

a=Δv/Δt

since Δv= 0m/s since the speed is constant...

if the speed would rise from 0 m/s to 19.72222m/s

then a=(19.7222 m/s)/13320 s

a=0.00148 m/s2

A car travels in a straight line for 3.7 h at a constant speed of 71 km/h . what is its acceleration? answer in units of m/s 2

The acceleration of a freely falling object is 20 m/s if the distant planet, a freely falling object gains speed at a steady rate of 20 m/s during each second of fall.

It is defined as the rate of change in linear velocity with respect to time. It is also known as linear acceleration.

It is given that:

on a distant planet, a freely falling object gains speed at a steady rate of 20 m/s during each second of fall.

As we know, from the acceleration the rate of change in linear velocity with respect to time. It is also known as linear acceleration.

The acceleration of an item is the amount of speed it gets or loses per second when only its speed is changing and not its direction.

Thus, the acceleration of a freely falling object is 20 m/s if the distant planet, a freely falling object gains speed at a steady rate of 20 m/s during each second of fall.

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Answer:

false

Explanation:

Work may be done in positive or negative direction. When a work is done in positive direction, it is called useful work, when work is done in negative direction, it is known as useless work. Any energy associated with friction produces useless work. That is, the work is done in negative direction.

Therefore, thermal energy produced by friction can be used to do work but in negative direction.

The correct option is false.

Answer:

The answer would be The number of protons and neutrons

Neutrons and protons cannot be removed from nucleus from chemical reactions because they are strongly held together but nuclear reactions are strong enough to separate them

Explanation:

Nuclear reactions involve a change in the nucleus of an atom, usually producing a different element. Chemical reactions, on the other hand, involve only a rearrangement of electrons and do not involve changes in the nuclei

Electronegativity is measured on a relative, dimensionless scale known as the Pauling scale. The scale is based on the ability to attract electrons when forming covalent bonds, with fluorine set at 3.98 and other elements scaled against this value. The Pauling scale is the standard despite the abstract nature of electronegativity.

Electronegativity is measured on a relative scale called the Pauling scale. This scale was developed by Linus Pauling in the 1930s. On the Pauling scale, which is the most commonly used scale for measuring electronegativity, electronegativity is dimensionless and has no unit of measure. Fluorine, the most electronegative element, is set at a value of 3.98. All other elements are assigned values from 0 to 4.0 based on their relative ability to attract a bonding pair of electrons compared to fluorine.

The notion of electronegativity is crucial in understanding the chemical behavior of elements, particularly in the formation of covalent bonds. The higher the electronegativity value of an element, the more strongly it tends to attract bonding electrons. Fluorine's high electronegativity makes it an important reference point against which the electronegativities of other elements are measured.

Since electronegativity is an abstract property and cannot be measured directly, the Pauling scale is based on observable quantities such as the strengths of covalent bonds and molecular dipole moments. Different scales may use various methodologies, but the Pauling scale remains the standard for discussed trends in electronegativity.

It measures 7,926 miles (ca. 12,756 km) in diameter (the distance from one side to the other via the centre of the Earth) (about 12,756 kilometres). When the diameter of Earth is calculated between the North and South Poles, it is somewhat smaller at 7,907 miles (ca. 12,725 km).

Joseph Louis Lagrange, a mathematician, developed the so-called Lagrangian points, one of which is L2. Lagrangian's points are places in space where the interaction between a body's orbital motion and gravity forces is balanced. As a result, spaceships can use them to “hover.”

Therefore, The gravity at the equator would be zero if the earth were roughly 36,000 km in circumference, the same mass, and the same length of day. This is where geostationary orbits are located.

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Final answer:

To find the point where the Earth's gravitational acceleration is 1/40 of the surface value, we use Newton's law of gravitation and solve for r', yielding a distance of approximately 40225 km from the Earth's center.

Explanation:

To determine the distance from the Earth's center to a point where the gravitational acceleration is 1/40 of its value at the Earth's surface, we can use the law of universal gravitation. The force of gravity according to Newton's law of gravitation is given by F = GMm/r², where G is the gravitational constant, M is the mass of the Earth, m is the mass of the object, and r is the distance from the center of the Earth.

The gravitational acceleration g at the surface of the Earth is g = GM/r². If we want to find the point where this acceleration is 1/40 of its surface value g0, we set g = g0/40, which leads to GM/(r')² = GM/(R² * 40), where R is the radius of the Earth and r' is the new distance from the Earth's center. Solving for r', we get r' = R * √40. Using the mean radius of the Earth R ≈ 6371 km, we find:

r' ≈ 6371 * √40 km ≈ 6371 * 6.32 km ≈ 40225 km.

This means the distance from the Earth's center to the point where gravitational acceleration is 1/40 of its surface value is approximately 40225 km.

Answer:  13.3 m

I got it right on Acellus

Answer: The largest known star in the universe is UY Scuti, a hypergiant with a radius around 1,700 times larger than the sun. And it's not alone in dwarfing Earth's dominant star.

Explanation:

The force that will make this into equilibrium would be equal to the force of equal amount yet applied on the opposite direction.

So we are given that a force of 55 N due west was applied, so the equilibrium force would be 55 N due east.

Final answer:

To achieve equilibrium against a 55 N force acting due west, a single equal and opposite force of 55 N must be applied due east. In various scenarios, the equilibrium force must have the same magnitude but opposite direction to the acting force. Pythagorean theorem helps calculate net force when forces are perpendicular.

Explanation:

For an object to be in equilibrium, the net force acting on it must be zero. This means that to counteract a force of 55 N acting due west, an equal and opposite force must be applied. The single force that would produce equilibrium in this case is a 55 N force acting due east.

Applying this principle, we can understand the scenarios presented:

Lastly, a charge in an electric field experiencing a net force of 100 N eastward when the field points north is impossible, since the electric force on a charge by a field is in the direction of the field. Therefore, the force must be perpendicular to the direction of the electric field strength of 50 N/C pointing north.

Answer:

The standard unit used to measure of mass is gram.

(2) is correct option.

Explanation:

S.I is the standard international system of unit.

The S.I unit of mass is kilogram.

1 kg = 1000 gm

So, We can say that,

The standard unit used to measure mass is gram.

Cubic meter is the unit of volume.

Liter is the unit of water.

Meter is the unit of length.

Hence,  The standard unit used to measure of mass is gram.

The final potential difference across the capacitor after delivering 40% of its stored energy to a lamp is approximately 9.49V.

The question asked is related to the energy stored in a capacitor and its link to the potential difference across it. The energy stored in a capacitor is given by the relation Uc = CV²/2, where C is the capacitance and V is the potential difference. When a capacitor delivers 40% of its stored energy to a lamp, this means a reduction in the stored energy and therefore a corresponding reduction in potential difference as well.

As the stored energy is directly proportional to the square of the potential difference, if the energy reduces to 60% (after delivering 40%), the final potential difference will be the square root of this fraction (sqrt(0.6)) times the initial potential difference. The final potential difference across the capacitor will therefore be sqrt(0.6) * 12V, which is approximately 9.49V.

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The momentum of the large rock that has a mass of 50kg and is rolling downhill at 3 m/s is 150kgm/s.

HOW TO CALCULATE MOMENTUM:

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