Which of the following statements describe the speed of sound? select all that apply. the speed of sound is faster in aluminum than in water. the speed of sound is slower in air at 20 c than in air at 0 c sound moves faster in most solids than in gasses. sound moves faster in air than in water. the speed of sound is slightly faster in the summer than in the winter.

The speed of sound is faster in aluminum than in water.  

Sound moves faster in most solids than in gasses.

The speed of sound is slightly faster in the summer than in the winter.

Explanation:

As we know that the speed of sound is given by the formula

(in solids)

(in gases)

So here from above formulas we can say that elasticity of solids is more than the elasticity of liquids or gases

so here we have

1). The speed of sound is faster in aluminum than in water.  

3). Sound moves faster in most solids than in gasses.

Also as we can see that the speed of sound is directly depends on the temperature of the medium or gas

so here as we increase the temperature the speed of the sound in that medium will increase

so here we have

5). The speed of sound is slightly faster in the summer than in the winter.

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia