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3 years ago

What property of an object is related to the average kinetic energy of the particles in that object

Physics

1 answer:

Butoxors [25]3 years ago

6 0

Answer:

Temperature of the object

Explanation:

According to kinetic theorem of gases, the temperature of a gas is a measure of the of the average kinetic energy of the gas particle.

A particle can either exist as solid, liquid or gas.

For solid, the particles are fixed as they rotates and vibrate about a mean position.

The particle of an object is a solid particle.

In accordance to kinetic theorem, the temperature of an object related to the average kinetic energy of the particles in the object.\

Temperature: This can be defined as the degree of hotness or coldness of an object.

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A snow ball is thrown upward at a speed of 27 m/s. How high is the snow ball 3.5 seconds later? Also, how fast is it moving at t

JulijaS [17]

Answer:

Dy = 111.66 [m]

t = 3.5 [s]

Explanation:

To solve this problem we must use the equations of kinematics.

$v_{f} = v_{o} - (g*t)\\$

where:

Vf = final velocity [m/s]

Vo = initial velocity = 27 [m/s]

g = gravity acceleration = 9.81 [m/s²]

t = time = 3.5 [s]

Note: The negative sign of the equation means that the gravity acceleration goes in opposite direction

Vf = 27 - (9,81*3,5)

Vf = - 7.33 [m/s] (this negative sign indicates that at this moment the snowball is going downwards)

To find how high the snowball was we must use the following equation:

$Dy=v_{o} *t+\frac{1}{2}*g*t$

Dy = (27*3.5) + (0.5*9.81*3.5)

Dy = 94.5 + (17.16)

Dy = 111.66 [m]

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3 years ago

The speed at which a wave is transmitted depends on _____. A. the state of matter of the medium B. whether or not the wave is re

11Alexandr11 [23.1K]

Answer: C

Explanation:

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3 years ago

You are standing on the ground. Describe two ways that you could increase the pressure between your feet and the ground.

ch4aika [34]

Answer:

1:by standing with one feet

2:by standing with your toes

Explanation:

1: by standing with one feet

2:by standing with ur toes

Pressure is inversely proportional to area, the little the area, the more the pressure.the bigger the area,the lesser the pressure

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4 years ago

Would a wire carrying more electrons transfer more energy than a wire carrying fewer electrons? Explain why or why not.

Burka [1]

Answer:

Explanation:

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3 years ago

Read 2 more answers

Two identical ions are each missing two electrons, each ion has a charge of 2e. What is the magnitude of the force between the i

xz_007 [3.2K]

Answer:

|F| = 2.09 × 10⁻⁸ assuming that the two ions are point charges.

Explanation:

What's the charge on each ion?

The symbol $e$ here stands for fundamental charge. Each electron carries a negative fundamental charge of -e. Each proton carry a positive fundamental charge of +e.

Molecules and atoms are neutral. They contain an equal number of electrons and protons. Remove one electron from a molecule or atom, and that particle will end up with more protons (which are positive) than electrons. That particle will carry a positive charge of +e become an ion (a cation to be precise.) Remove another electron and the ion will carry a charge of +2e.

For each ion $q = +2 \;e = 2\times 1.60\times 10^{-19}\;\text{C} = 3.2\times 10^{-19}\;\text{C}$ .

What's the size of the electrostatic force between the two ions?

Consider Coulomb's Law for the electrostatic force $F$ between two point charges:

$\displaystyle F = -\frac{k\cdot q_1\cdot q_2}{r^{2}}$ ,

where

$k$ is Coulomb's constant,
$q_1$ and $q_2$ are the charge on the two point charges, and
$r$ is the separation between the two charges.

Make sure that all values are in SI units. Assume that the two ions are small enough that they act like point charges:

$\displaystyle \begin{aligned}F &= -\frac{k\cdot q_1 \cdot q_2}{r^{2}}\\&=-\frac{8.99\times 10^{9}\cdot(3.2\times 10^{-19}) \cdot (3.2\times 10^{-19})}{(2.1\times 10^{-10})^{2}}\\ &= -2.09\times 10^{-8}\;\text{N}\end{aligned}$ .

The value of $F$ is negative, meaning that the two charges will repel each other because they are both positive. The question is asking for the magnitude of this force. Thus drop the sign in front of $F$ to obtain $2.09\times 10^{-8}\;\text{N}$ , which is the magnitude of $F$ .

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3 years ago