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3 years ago

Explain why different materials have different thresholds to change states matter

Physics

2 answers:

Degger [83]3 years ago

6 0

Because different materials have different molecular organizations.

Ganezh [65]3 years ago

6 0

Answer: Due to different particle sizes and temperature

Explanation: Matter is said to be anything that occupies space. Matter has three states; Solid,Liquid and gas.

This three states can be differenciated based on there particle sizes. A solid matter particle are closely held together this enable it have a definite shape.

A liquid matter particles are loosed and not well packed together. It doesn't have a definite shape but the shape of the container.

Gaseous Matter particles moves freely. They are not held together.

Different materials have different particles sizes and it ensures their grouping also different temperature is required to change states of matter from one form to another.

solid can change it state to liquid by melting

Liquid can change it state to solid by freezing and also liquid to gas by heating into vapor.

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3 years ago

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2 years ago

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Explanation:

It is given that, the force needed to keep a car from skidding on a curve varies inversely as the radius of the curve and jointly as the weight of the car and the square of the car's speed such that,

$F\propto \dfrac{mgv^2}{r}$

$F=\dfrac{kmgv^2}{r}$

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r is the radius of the curve

v is the speed of the car

Case 1.

F = 640 pounds

Weight of the car, W = mg = 2600 pound

Radius of the curve, r = 650 ft

Speed of the car, v = 40 mph

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Case 2.

Radius of the curve, r = 750 ft

Speed of the car, v = 30 mph

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Hence, this is the required solution.

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3 years ago