If it has enough kinetic energy, a molecule
at the surface of the Earth can escape the
Earth’s gravitation.
The acceleration of gravity is 9.8 m/s^2
and the Boltzmanns’ constant is 1.38066 ×
10−23 J/K.
Using energy conservation, determine the
minimum kinetic energy needed to escape in
terms of the mass of the molecule m, the
free-fall acceleration at the surface g, and the
radius of the Earth R.

1. Kmin =1√2m g R
2. Kmin = m g R
3. Kmin = 2 m g R
4. Kmin =1/3m g R
5. Kmin =1/2m g R

Answer:

The second law: When a force is applied to a car, the change in motion is proportional to the force divided by the mass of the car. This law is expressed by the famous equation F = ma, where F is a force, m is the mass of the car, and a is the acceleration, or change in motion, of the car

Answer:

Illegal drugs are dangerous because once someone starts doing drugs they go insane for more and their demand for my drugs can be so dangerous that they would even sometimes harm the people close to them and, In some cases people start to hate them selves and some even killed themselves.

The required radius of the shaft is 1.66 cm.

A radius of a circle or sphere is any of the road segments from its middle to its perimeter, and in greater current usage, it's also their duration. The name comes from the Latin radius, which means ray however also observed as a chariot wheel.

The radius of a circle is the gap from the middle of the circle to any factor on its circumference. it's also denoted via 'R' or 'r'.while the radius of a circle runs from its center to its facet, the diameter runs from aspect to aspect and cuts thru the middle. A circle's diameter basically splits the shape in half.

Calculation:-

w = v/r

W₁/w₂ = r₂/r₁

r₂ = (w₁/w₂) × r₁

   = (33.3/60) × 3

  = 1.66 cm

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Throwing the clothes with a force can exert an equal force on the person.

According to Newton's third law, for every action, there is an equal and opposite reaction.

The person needs to remove his clothes and throw it to the opposite direction with a force, such that the cloth exerts an equal and opposite force to the person, thus he can move forward to the shore.

The momentum of the person will be cancelled by the equal and opposite momentum of the clothes. So, the momentum is conserved.

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Answer:A::C

Solution :

ΔT=

1

2

TαΔθ

rArr Δt=

ΔT

T1t

But T′≈T

∴Δt=

1

2

αΔθ(t)

=

1

2

×0.000012×20×24×3600

=10.37s

At higher temperture, length of pendulum clock will be more. So, time period will be more and it will lose the time.

Explanation:

Answer:

The answer is water

Explanation:

it has a netural ph of 7.0

why is the only option milk?

The Ph for milk is about 6.5 to 6.7,  it varies becauses milks gets sour when it rots.

Answer:

Greenhouse gases include carbon dioxide, methane, nitrous oxide and other gases that accumulate in the atmosphere and create the heat-reflective layer that keeps the Earth at a livable temperature. These gases form the insulation that keeps the planet warm enough to support life.

Answer:

If this is the question : boy weighing 50kg climbs up a vertical height of 100m. Calculate the amount of work done by him. How much potential energy does he gain (g=9.8m/s2)

So the answer will be:

mass of boy = m = 50 kg   
height = h = 100m  

 since boy does not move anything with his force, work done by him is zero    work done on the boy = gain in potential energy   
 P.E=mgh    P.E=50×9.8×100   P.E=49KJ  so, potential energy gained by boy is 49 KJ 

Explanation:

The work done by the pump is -39.5 J.

The work done on a system during an isothermal compression can be calculated using the equation:

W = -nRT ln(V2/V1)

where n is the number of moles of gas, R is the gas constant (8.31 J/mol•K), T is the temperature in Kelvin, V1 is the initial volume, and V2 is the final volume.

Converting the temperature to Kelvin:

0 ∘C = 273.15 K

Using the ideal gas law:

n = PV/RT

P = 1.00 atm = 1.00 x 10^5 Pa

R = 8.31 J/mol•K

T = 273.15 K

Solving for n:

n = (PV) / RT

n = (1.00 x 10^5 Pa)(3.40 L) / (8.31 J/mol•K)(273.15 K)

n = 0.0167 moles

Substituting the values into the equation for work:

W = -nRT ln(V2/V1)

W = -(0.0167 moles)(8.31 J/mol•K)(273.15 K) ln(1.70 L/3.40 L)

W = -39.5 J

The work done by the pump is -39.5 J. This means that 39.5 J of energy is required to compress the gas isothermally from 3.40 L to 1.70 L.

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It is very important for your measurements that the track is level because unlevel track change the acceleration of an object.

A non-level track leads to bring change in the acceleration of an object which leads to different value of experiment.

So we can conclude that it is important for your measurements that the track is level because unlevel track change the acceleration of an object.

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The track must be level for your measurements because an unlevel track changes the acceleration of an object.

It is defined as the numerical quantity that gives an idea about object length, width, and many more. It can be used to compare two objects.

The non-level track causes changes in an object's acceleration, resulting in various experiment values.

As a result, we can deduce that now the levelness of the track is critical for your measurements, as an uneven track changes an entity's acceleration.

Thus, the track must be level for your measurements because an unlevel track changes the acceleration of an object.

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The direction of the courts in recent years has been towards expanding and strengthening the rights of the accused, while also ensuring that justice is served and the rights of victims are protected.

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Temperatures in the thermosphere are not strictly comparable to those experienced near Earth's surface because the gases of the thermosphere are moving at very high speeds, and the temperature is very high.

The thermosphere lies among the exosphere and the mesosphere. “Thermo” way warmness and the temperature in this layer can reach as much as 4,500 tiers Fahrenheit. in case you have been to hang around inside the thermosphere, though, you'll be very cold because there are not sufficient fuel molecules to transfer the warmth to you.

The thermosphere is the outer layer of the Earth's surroundings, extending from about 53 miles to greater than 370 miles above the surface. The temperature increases rapidly in this layer due to the absorption of huge quantities of incoming excessive electricity sun radiation by using atoms of nitrogen and oxygen.

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Answer: 8.1m/s^2

Explanation:

For this question, in order to solve it, we have to use the second equation of motion which will be:

s = ut + 1/2at^2

where,

u = initial velocity

v = final velocity

t = time

a = acceleration

Since u = 0, then

a = 2s/t^2

a = 2 × 110/5.21^2

a = 220/27.1441

a = 8.1m/s^2

estimated effective nuclear charge experienced by a 3 p electron of chlorine is 6.1.

What is nuclear charge ?

In atomic physics, the net nuclear charge is the actual amount of positive (nuclear) charge experienced by electrons in a multi-electron atom. The term "effective" is used because the shielding effect of negatively charged electrons prevents higher energy electrons from experiencing the full nuclear charge of the nucleus due to inner layer repulsive effects. The net nuclear charge experienced by an electron is also called the nuclear charge. The strength of the nuclear charge can be determined by the oxidation number of the atom. Most of the physical and chemical properties of elements can be described in terms of their electronic configurations. . It is known that the magnitude of the ionization potential depends on the following factors:

atomic size;

nuclear charge;

Inner shell shielding effect u

The extent to which the outermost electrons penetrate the charge cloud created by the inner electrons.

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Explanation: Research highlights the individuals with ASDS are nutritionally vulnerable because they exhibit a selective or pick eating pattern and sensory sensitivity that predisposes them to restricted intakes.

I hope this helps!

The angular velocity of a planet can be calculated by dividing 2π radians by the time it takes for the planet to complete one orbit around the Sun. The linear velocity of a planet can be calculated by multiplying the planet's angular velocity by its average distance from the Sun.

Angular velocity refers to the rate at which an object moves around a central point. In the case of a planet orbiting the Sun, the central point is the Sun itself. To calculate the angular velocity of a planet, we divide the angle traveled by the planet in one orbit by the time it takes to complete that orbit. Since a full circle is 2π radians, the angular velocity can be calculated by dividing 2π by the orbital period of the planet.

On the other hand, linear velocity refers to the speed at which an object moves in a straight line. In the context of a planet's orbit, the linear velocity can be derived from the angular velocity. By multiplying the angular velocity of the planet by its average distance from the Sun, we can determine the linear velocity of the planet in its orbit.

By calculating both the angular and linear velocities of a planet, we can gain insights into its motion and speed within the solar system. These calculations allow us to better understand the dynamics of planetary orbits and the forces that govern them.

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When the Earth is at point C, Equinox happens.

In Equinox, the Sun is directly above the equitor making day and night equal in both hemispheres.

Answer:

A.) Hot to cold.

Explanation:

I took the quiz on Edge, 2022.

(See the attachment below.)

Hope this helped! <3

Based on scientific information, the direction that heat generally flow from is: A. hot to cold.

Heat is also known as thermal energy and it refers to a form of energy that is only transferred from an object to another due to a difference in temperature.

During the process of heat conduction, heat would only be transferred between objects that are having different levels of temperature and objects that are directly in contact with one another.

In conclusion, heat is generally transferred from a hot object to a cold object as a result of their varying temperature.

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Cold fronts are not associated with group of answer choices a trough of low pressure. showery type of precipitation temperature change a ridge of high pressure. the following statement is false.

Cold fronts are indeed associated with a trough of low pressure, a showery type of precipitation, and a temperature change. However, they are not associated with a ridge of high pressure. Cold fronts typically occur when a cold air mass advances and replaces a warmer air mass. The boundary between these two air masses is represented by a frontal system, with the cold front marking the leading edge of the colder air. Along a cold front, the advancing cold air acts as a wedge, lifting the warm air ahead of it. This lifting motion creates a trough of low pressure along the front, leading to unstable atmospheric conditions and the formation of showery precipitation, such as rain or thunderstorms.

The temperature change is also characteristic of a cold front, as the colder air replaces the warmer air, resulting in a noticeable drop in temperature. A ridge of high pressure, on the other hand, is associated with stable weather conditions and is typically found behind a cold front. It is characterized by sinking air, clear skies, and generally fair weather.

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Answer:

noble gases is those group of elements that DO NOT form ions and are found as monatomic atoms in nature .

The only group of elements that DO NOT form ions and are found as monatomic atoms in nature are the: noble gases.

The noble gases are a group of chemical elements with comparable qualities; under normal conditions, they are all odourless, colourless, monatomic gases with very minimal chemical reactivity. Historically, they were also known as inert gases and aerogens. Helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radioactive radon are the six naturally occurring noble gases (Rn).

Oganesson (Og) is a highly radioactive element created synthetically. Although the IUPAC has included oganesson since "group 18" and "noble gas" have been used interchangeably, oganesson may not be appreciably chemically noble and is projected to deviate from the norm and be reactive due to relativistic effects. Its chemistry has not yet been studied due to the single known isotope's relatively brief 0.7 ms half-life.

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An equation showing the relationship between the THREE forces is R -W +F= 0

The equal and opposite force acting at a point from the axis of rotation is called the moment of force.

M = F x r

Given is a wheelbarrow and stones with a total mass of 43 kg. The wheelbarrow is in equilibrium with two of the three forces acting on it

Taking moment about the wheel, we get

-43x 9.81 x 0.6 + F x 1.5 =0

F = 43 x 0.6/1.5

F = 168.732 N (upward force)

Summation of forces in y direction is zero.

R -W +F= 0

Where, R is the normal force, W is the Weight force and F is the applied force.

Thus, this is the equation representing all the three forces acting on wheelbarrow.

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Answer:

C. 100 NEWTONS

Explanation:

just my brain being ly = brainly is the name so my brian is being ly

The weight of the stone is 10N.

To find the weight of the stone, we need to know about the gravitational force on any object due to earth.

When an object is near the earth surface, its weight is mass × gravitational acceleration (g).

So, the weight of the stone= 1kg × 10 m/s²

                            = 10 N

Thus, we can conclude that the weight of the stone 100 m above a gorge is 10N.

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Venus has large impact craters due to the absence of erosive forces and the survival of only the largest meteors and asteroids through its thick atmosphere.

Option (A) is correct.

Venus, known as the sister planet of Earth, is characterized by its thick, corrosive atmosphere and extreme temperatures. Its surface lacks water and volcanic activity, and is instead marked by numerous large impact craters. This is due to the absence of erosive forces, like water, which would have gradually eroded the craters over billions of years. The craters formed on Venus as a result of asteroid and comet impacts over the past 4.6 billion years. However, the impact process on Venus differs from that on Earth. Venus' thick atmosphere burns up most smaller meteorites and asteroids upon entry, allowing only the largest ones to survive their descent. Consequently, only the large impact craters remain visible on the planet's surface today. Therefore, option (A) is correct. In summary, Venus bears only large impact craters as a consequence of the survival of substantial meteors and asteroids through its thick and corrosive atmosphere.

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The process of saturating unsaturated fatty acids is called hydrogenation. This involves adding hydrogen atoms to the unsaturated bonds of the fatty acids.

Hydrogenation increases the melting point and shelf life of the fatty acids and changes their texture from liquid to semi-solid or solid. This process is often used in the production of margarine, shortenings, and cooking oils. It also helps to reduce the amount of trans fat, which is associated with negative health effects.

The hydrogenation process is done by bubbling hydrogen gas through the fat or oil while it is heated, often with a catalyst. This breaks the double bonds of the unsaturated fatty acids and allows them to accept hydrogen. As the hydrogen atoms are added, the fatty acids become more saturated and the melting point increases. The hydrogenation process also changes the taste and smell of the fat or oil, as well as its color and texture.

Hydrogenation is not the only process used to increase the shelf life of fatty acids. Other methods include partial hydrogenation, interesterification, and fractionation. Each of these processes has its own advantages and disadvantages, and the choice of which to use depends on the application.

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Answer:

A or C

Explanation:

Storm signal number 1 is a form of weather caution issued via the Philippine Atmospheric, Geophysical, and Astronomical Services Administration (PAGASA) to alert the public to the opportunity of a tropical cyclone entering the USA.

When a storm sign number 1 is raised, it method that a tropical cyclone, along with a tropical despair or tropical hurricane, is expected to affect a particular region within the next 36 hours.

The winds related to the cyclone aren't yet strong sufficient to cause widespread harm, but they may be sufficient to disrupt transportation and different outside sports.

Throughout storm sign number 1, the general public is cautioned to be vigilant and take precautions, which include securing loose items and staying indoors if feasible.

Fishermen are recommended to keep away from going out to sea, and small vessels are cautioned to take refuge. PAGASA issues hurricane signal warnings up to a wide variety of five, with better numbers indicating more intense climate situations.

The warnings are a crucial tool for helping the general public to put together for and stay safe throughout tropical cyclones, which could reason extensive damage and loss of life within the Philippines.

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Answer:

Given Mas (m) =63kg

velocity (v) =4.3m/s

momentum (p) =?

p=mv

63kgx4.3m/s

270.9kg.m/s

the momentum =270.9kg.m /s

If a ball of mass 0.63 kilograms is moving at 4.3 meters/seconds, then the momentum of the ball would be 2.709-kilogram meters/second.

It can be defined as the product of the mass and the speed of the particle, it represents the combined effect of mass and the speed of any particle.

Momentum = mass of the object × velocity of the object

As given in the problem we have to calculate the momentum of the ball if it has a mass of 0.63 kilograms and moving with a speed of  4.3 meters/seconds,

The momentum of the ball = 0.63× 4.3

                                             =2.709 kilogram meters/second

Thus, the momentum of the ball comes out to be 2.709-kilogram meters/second.

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