The temperature near the surface of the earth is 295 k. an argon atom (atomic mass = 39.948 u) has a kinetic energy equal to the average translational kinetic energy and is moving straight up. if the atom does not collide with any other atoms or molecules, how high up would it go before coming to rest? assume that the acceleration due to gravity is constant throughout the ascent.

Atom Argon would high up 9403.761 m before coming to rest

Energy is the ability to do work

Energy because its motion is expressed as Kinetic energy (KE) which can be formulated as:

So for two objects that have the same speed, the greater the mass of the object, the greater the kinetic energy

Whereas for a stationary object it has kinetic energy = 0

While the energy produced from its position is called potential energy (PE)

which can be formulated as:

 PE = m. g. h ⇒ gravitational potential energy

The sum of kinetic and potential energy is called mechanical energy

The position of the object when near the surface PE = 0

Because objects (argon atoms) have kinetic energy equal to the average translational kinetic energy, then :

K = average kinetic energy per molecule of gas (J)

k = Boltzmann's constant (1.38.10⁻²³ J / K)

T = temperature (K)

So, near the surface :

ME = KE

ME = 3/2 kT

ME = 3/2 .1.38.10⁻²³. 295

ME = 6.11.10⁻²¹

atomic mass of Argon = 39,948 u

because 1 u = 1.66.10⁻²⁷ kg, the Argon mass:

= 39,948.1.66.10⁻²⁷

= 6.63.10⁻²⁶ kg

before coming to rest: KE = 0, because ME = constant then:

ME = PE

6.11.10⁻²¹ = m. g. h (g = 9.8 m / s²)

6.11.10⁻²¹ = 6.63.10⁻²⁶. 9.8. h

The kinetic energy of the vehicle

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law of motion  

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displacement of A skateboarder  

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b.

explanation:

10.0

this is an example of "committed" time.

committed time, as contracted time, takes need over essential and available time since it is seen as profitable work. it alludes to the time allotted to keep up a home and family. at the point when a man is commuting using committed time this individual may feel that the drive is an obligation to family, for example, strolling youngsters to class or driving a mate to work. contracted and committed time clients may feel that their commute could really compare to the commute of important or leisure time clients on the grounds that their commute is profitable work. in this manner, they might be more disposed to pick a mechanized method of movement.