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3 years ago

This is the speed at which molecules or atoms move dependent on temperature and state of matter.

2 answers:

6 0

The correct answer should be kinetic molecular velocity. Which is a complex term for the speed of molecules. The faster the molecules move the more liquid the chemical will be, with the fastest being gaseous molecules. The slowest ones are things that are solid. This is easily observed on water that is slowest when ice and fastest when water vapor.

baherus [9]3 years ago

5 0

Answer:

Molecular Motion also

Explanation:

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The linear expansion coefficient of aluminium is 24 × 10^-6 (°C)^-1. When thetemperature is 33 °C, a spherical aluminium ball ha

KatRina [158]

A) Use the following formula for the linear expansion, in this case, of the diameter of the spherical ball:

$d=d_o\lbrack1+\alpha(T_2-T_1)\rbrack$

where,

do: initial diameter = 11.21cm

d: final diameter = ?

α: linear expansion coefficient = 24*10^6 /°C

T2: final temperature = 257°C

T1: intial temperature = 33°C

Replace the previous values of the parameters into the formula for d and simplify:

Hence, the diameter of the spherical ball is 11.27cm

B) First, consider what is the change in the radius of the sphere, as follow:

$\Delta V=0.0324V_o$

Now, use the following formula for the change in volume with the temperature:

$\Delta V=\beta V_o\Delta T=3\alpha V_o\Delta T$

where you have used the equivalence β = 3α.

Solve the equation above for the change in temperature and replace the values of the other parameters:

$\Delta T=\frac{\Delta V}{3\alpha V_o}=\frac{0.0324V_o}{3(24\cdot10^{-6}(\degree C)^{-1})V}=450\degree C$

Hence, the change in temperature is 450°C

6 0

1 year ago

During a baseball game a pitcher threw a baseball, and the catcher, who was behind home plate, caught it. Which is true about th

shtirl [24]

Answer:

If the pitcher catches the ball after it has been hit by the hitter, but before it touches the ground, the hitter is out, and, if there are not yet three outs but there is a runner on the bases, the pitcher can try to get a second (or third) out by throwing the ball to the appropriate baseman.

Explanation:

The catcher plays behind home plate in a baseball . The catcher plays an important role in baseball game. He is the main part of the battery with the pitcher. The catcher catches the pitches and help to call the game.

Catcher is the Best Baseball Position.

First Base is the Best Baseball Position.

Second Base is the Best Baseball Position.

Third Base is the Best Baseball Position:

Shortstop is the Best Baseball Position.

Right Field is the Best Baseball Position.

7 0

3 years ago

A gas was compressed to 30.0 mL at 1.5 atm from 65<br>mL. What was the original pressure?

astra-53 [7]

A gas as 30.0 Ml because pile of 1.4 add 1 that equals. To 1.5 and remove 10 so thebpresssure is 1399.93

4 0

3 years ago

In 2002, a gargantuan iceberg broke away from the Ross Ice Sheet in Antarctica. It was approximately a rectangle 218 km long, 25

Musya8 [376]

Answer:

a) 1.25e15 kg

b) 4.17e20 J

c) 44.55 years

Explanation:

To find the volume you need to multiply 218 km * 25 km * 250 m (be careful with units), so the volume is 1.3625e12 m^3, if you multiply this value by the density you will obtain the mass, that is 1.25e15 kg.

To find the energy needed to melt the ice, you use the latent heat, in this case, it is 3.34e5 J/kg. Now you multiply this value by the mass, so you need 4.17e20 J to melt the iceberg.

The surface area of the iceberg is 545e7 m^2, so the ice absorbs 594e9 W, one W is one J/s, so in 12 hours the iceberg absorbs 2.56e16 J, so in 365 days absorbs 9.36e18 J. Now you just divide 4.17e20 J by the amount f energy per year, and obtain 44.55 years.

5 0

3 years ago

During nuclear fission, great amounts of energy are produced from

stiks02 [169]

D.very small amounts of mass.

6 0

3 years ago

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