What is meant by free electrons?

Physics

1 answer:

muminat3 years ago

7 0

Electron as a free particle

Explanation:

Free electrons,the electrons which are not attached to the nucleus of a atom and free to move

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Kate gathered 3 of the same size made of different materials: glas, clear plastic, and aluminum painted black. She placed on the

Anestetic [448]

Answer:

To relate the type of box material to the warmth inside the box 

Explanation:

3 boxes are made with three different materials glass, plastic and Aluminium. Thermal conductivity is different for different materials. thermal conductors allow easy flow of heat through them and insulators allow minimal or no flow of heat through them.

Thus the amount by which an object gets heated up depends on the value of its conductivity. In this experiment, glass and plastic are insulators and aluminium is a conductor. Among glass and plastic, plastic is a better insulator.

Thus the heat contained in the boxes will be of the order Aluminium>glass>plastic.

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3 years ago

Which of the following is an example of velocity ?

Mademuasel [1]

The correct answer is c because B) is a vector which includes both velocity and direction

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3 years ago

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A ball rolls from x=3.85m to x=22.1m in 5 seconds. What was its average velocity

Vadim26 [7]

Answer:

Average Velocity = 3.65 m/s

Explanation:

Average Velocity $=\frac{Total Displacement}{Total Time}$ $=\frac{22.1-3.85}{5}=\frac{18.25}{5}=3.65$

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2 years ago

The error in the measurement of the radius of a sphere is 2%. What will be the error in the calculation of its volume?

BlackZzzverrR [31]

To solve this problem we will apply the geometric concepts of the Volume based on the consideration made of the radius measurement. The Volume must be written in differential terms of the radius and from the formula of the margin of error the respective response will be obtained.

The error in radius of sphere is not exceeding 2%

$\frac{dr}{r} = \pm 0.02$