What is the electric flux through a cube of 1 cm? Therefore, the net charge enclosed within the cube is zero. Therefore, electric flux is zero. What are the three basic properties of the electric charge? In this section, we will learn about three such properties of point charges; the additivity of electric charge, the […]
What are the noise control methods?
What are the noise control methods? Extraction, ventilation, cooling, openings in walls and enclosures. Instead of fitting silencers, it is often possible to achieve a 10 – 20 dB reduction in airborne noise from a duct or opening by lining the last bend in the ductwork with acoustic absorbent (foam or rockwool / fibreglass). Which […]
What did Penzias and Wilson discovery prove?
What did Penzias and Wilson discovery prove? Penzias and Wilson had spotted the CMB, the predicted thermal echo of the universe’s explosive birth. The landmark find put the Big Bang theory on solid ground, suggesting that the cosmos did indeed grow from a tiny seed — a single point — about 13.8 billion years ago. […]
What is the best sampling method?
What is the best sampling method? Random sampling What are the 4 types of sampling? There are four main types of probability sample. Simple random sampling. In a simple random sample, every member of the population has an equal chance of being selected. Systematic sampling. Stratified sampling. Cluster sampling. What are the sampling methods? Methods […]
What is an ionic bond write two examples?
What is an ionic bond write two examples? An ionic bond is formed as a result of the electrostatic attraction between the positive and negative ions formed by the transfer of electrons from one atom/group to another. Examples: NaCl,KBr,etc. What is ionic and covalent bond explain with example? The two main types of chemical bonds […]
Why is the maximum possible heat rate for a heat exchanger not equal to Cmax Thi TCI?
Why is the maximum possible heat rate for a heat exchanger not equal to Cmax Thi TCI? Why is the maximum possible heat rate for a heat exchanger not equal to Cmax(Thi-Tci)? Can the outlet temperature of the cold fluid ever exceed the inlet temperature of the hot fluid? No the outlet temperature of the […]
How do gamma rays work?
How do gamma rays work? Gamma-rays have the smallest wavelengths and the most energy of any other wave in the electromagnetic spectrum. These waves are generated by radioactive atoms and in nuclear explosions. Gamma-rays can kill living cells, a fact which medicine uses to its advantage, using gamma-rays to kill cancerous cells. Why are gamma […]
Why would air pressure be greater at sea level than it would be on the top of a mountain?
Which best describes the future of employment in the energy career cluster?
Which best describes the future of employment in the energy career cluster? Which best describes the future of employment in the Energy career cluster? Oil and gas extraction and developing plant-based fuels are on the rise while coal mining, metal ore mining, and pipeline transportation are on the decline. Alton works in Energy Transmission. What […]
Which circuit is better series or parallel?
Which circuit is better series or parallel? Two bulbs in a simple parallel circuit each enjoy the full voltage of the battery. This is why the bulbs in the parallel circuit will be brighter than those in the series circuit. Another advantage to the parallel circuit is that if one loop is disconnected, then the […]