2 years ago

If temperature increases, then pressure __________.

1 answer:

6 0

If the temperature increases, then pressure increases too. (The molecules in the gas move faster, exerting a greater force. This increases the pressure.)

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Plutonium has a half life of 2.4 × 104 years. How long does it take for 99.0% of the plutonium to decay?

natali 33 [55]

Answer:

252 years

Explanation:

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2 years ago

Two electrons with a charge of magnitude 1.6×10-19 C in an atom are separated by 1.5×10-10 m, the typical size of an atom. What

vesna_86 [32]

Answer:

$1.02\cdot 10^{-8} N$ , repulsive

Explanation:

The magnitude of the electric force between two charged particles is given by Coulomb's law:

$F=k\frac{q_1 q_2}{r^2}$

where:

$k=8.99\cdot 10^9 Nm^{-2}C^{-2}$ is the Coulomb's constant

$q_1, q_2$ are the two charges of the two particles

r is the separation between the two charges

The force is:

- repulsive if the two charges have same sign

- Attractive if the two charges have opposite signs

In this problem, we have two electrons, so:

$q_1=q_2=1.6\cdot 10^{-19}C$ is the magnitude of the two electrons

$r=1.5\cdot 10^{-10} m$ is their separation

Substituting into the formula, we find the electric force between them:

$F=(8.99\cdot 10^9)\frac{(1.6\cdot 10^{-19})^2}{(1.5\cdot 10^{-10})^2}=1.02\cdot 10^{-8} N$

And the force is repulsive, since the two electrons have same sign charge.

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2 years ago

I need help in physics, pls hurry! I will give Brainliest for correct answers!!

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Top left: slowing down
Top right: not moving
Bottom left: moving at a constant speed
Bottom right: speeding up

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Carbon dioxide and nitrogen

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