All categories

3 years ago

Can someone help me?

Physics

1 answer:

Cloud [144]3 years ago

4 0

What do we know that might help here ?

-- Temperature of a gas is actually the average kinetic energy of its molecules.

-- When something moves faster, its kinetic energy increases.

Knowing just these little factoids, we realize that as a gas gets hotter, the average speed of its molecules increases.

That's exactly what Graph #1 shows.

How about the other graphs ?

-- Graph #3 says that as the temperature goes up, the molecules' speed DEcreases. That can't be right.

-- Graph #4 says that as the temperature goes up, the molecules' speed doesn't change at all. That can't be right.

-- Graph #2 says that after the gas reaches some temperature and you heat it hotter than that, the speed of the molecules starts going DOWN. That can't be right.

You might be interested in

What did Belgium do to the congo?

timama [110]

Answer:

They killed 10 million people and registered it as a colony

Explanation:

Brainliest helps

4 0

2 years ago

What element has 34 protons and 36 electrons

Strike441 [17]

Answer:

Selenium

Explanation:

8 0

3 years ago

Read 2 more answers

Which of the following types of stars had the smallest initial mass? Blue main sequence Neutron star Red supergiant White dwarf

Nezavi [6.7K]

Answer:

White dwarf

Explanation:

The Hertzsprung-Russell Diagram shows the mass of stars, the color, temperature and their brightness.Stars that lie below the main sequence area such as the White dwarf have the smallest initial mass.A white dwarf star has a mass less than that of the Sun.

6 0

3 years ago

A particle moves horizontally in uniform circular motion, over a horizontal xy plane. At one instant, it moves through the point

Alexus [3.1K]

Answer:

(2.5,0)

Explanation:

The particle can be described by the following equations:

$x=Rsin(-\omega t)+2.5\\y=Rcos(-\omega t)\\\frac{dx}{dt}=-\omega Rcos(-\omega t)\\\frac{dy}{dt}=\omega Rsin(-\omega t)\\\frac{d^2x}{dt^2}=-\omega^2Rsin(-\omega t)\\\frac{d^2y}{dt^2}=-\omega^2Rcos(-\omega t)$

For R = 2.5, ω = 2 and t = 0:

$x=2.5\\y=2.5\\\\\frac{dx}{dt}=-5\\ \frac{d^2y}{dt^2}=-10$

The center of the circle would be at point (2.5,0)

5 0

3 years ago

Molly is pulling a cart down the hallway. She stops at each classroom and collects a stack of books from each teacher. After sto

scZoUnD [109]

Answer:

His third law states that for every action or force in nature there is an equal and opposite reaction.

Explanation:

The heavier the books get, the harder it is for Molly to exert enough force to move the cart.

<em>I hope this helps!!!!!! Please mark me brainliest!!</em>

7 0

2 years ago