Answer:
Gamma rays
Explanation:
Gamma rays is at the end of the electromagnetic spectrum, and has the highest energy. It propagates through space at 3x10^8 m/s and has the smallest wavelength and the highest frequency. It is given off by atoms of element as they undergo nuclear disintegration.
Answer: C and D
Explanation: Analog Signals are generally much prone to even subtle noises. Also, they lose sound quality through multiple 'generations.' (B is true, but partially.)
Explanation:
When the speed of sound near the ground is reduced, (such as on a cold day when the layer of air nearest ground is colder than the air above) the higher speed of the wavefronts above cause a bending of sound toward the ground.
In order to make structures more seismic safe there are various ways by which one can build earthquake resistance structures which are far better than conventional ones.
The pyramidal or triangular shape structures contain less number of sides.A structure containing less number of sides frames greater resistance shape.
A rigid structure is more crumble and is more prone to annihilation.So the structure should be flexible.If we compare a taller building with a shorter one,the tall structure is more flexible.The shorter builds can not withstand the force of earth quakes.
During the construction of buildings,one should introduce the foundational plates .The layered foundational plates help buildings or other structures from destruction as they allow the sliding movement of the earth quake.