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3 years ago

Sort the characteristics of solids liquids and gases into the correct colums

Physics

1 answer:

boyakko [2]3 years ago

8 0

Solids have molecules that move slowly and are close together and are very attracted to eachother.

Liquids have molecules that move freely and are slightly attracted to eachother.

Gases have molecules that move, but aren't attracted to eachother.

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Which of these materials is an example of an insulator?

geniusboy [140]

Rubber. The other three are metals, and therefore good conductors.

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3 years ago

It is known that a shark can travel at a speed of 15 m/s.how far can a shark go in 10 seconds?

MrRissso [65]

If a shark can travel 15 miles per second, then it can go 150 miles in 10 seconds.

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3 years ago

Read 2 more answers

At 20°c, the resistance of a sample of nickel is 525 ohms. what is the resistance when the sample is heated to 70°C?

Ipatiy [6.2K]

The resistance of the sample is $682.5\Omega$

Explanation:

The relationship between resistance of a material and temperature is given by the equation

$R(T)=R_0(1+\alpha (T-T_0))$

where

$R_0$ is the resistance at the temperature $T_0$

$\alpha$ is the temperature coefficient of resistance

For the sample of nickel in this problem, we have:

$R_0 = 525 \Omega$ when the temperature is $T_0 = 20^{\circ}C$

While the temperature coefficient of resistance of nickel is

$\alpha = 0.006/^{\circ}C$

Therefore, the resistance of the sample when its temperature is

$T=70^{\circ}C$

$R=(525)(1+0.006(70-20))=682.5 \Omega$

Learn more about resistance:

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3 0

3 years ago

What are the two sources of earth's internal heat energy

RUDIKE [14]

Answer:

Hey

Your answer would be Radioactive Decay and Heat of formation.

When earth first formed it was very violant. Some planetary scientists believe that the moon was created from a collision involving earth and Thea (a theoretical dwarf planet). these collisions that have formed earth heated it so much that it is still hot from them.

Radioactivce decay is another major fource of internal heat for earth.

6 0

2 years ago

Consider the following mass distribution where the x- and y-coordinates are given in meters: 5.0 kg at (0.0, 0.0) m, 2.9 kg at (

Sauron [17]

Answer:

x = -1.20 m

y = -1.12 m

Explanation:

as we know that four masses and their position is given as

5.0 kg (0, 0)

2.9 kg (0, 3.2)