Category: Physics

What indicates a physical reaction? In a chemical reaction, there is a change in the composition of the substances in question; in a physical change there is a difference in the appearance, smell, or simple display of a sample of matter without a change in composition. Although we call them physical “reactions,” no reaction is […]

What happens if I answer a robocall? If you answer the phone and hear a recorded message instead of a live person, it’s a robocall. If the recording is a sales message and you haven’t given your written permission to get calls from the company on the other end, the call is illegal period. Hang […]

Is it socially acceptable to smoke? Social smoking is not safe. If you smoke at all, you are at higher risk of heart disease and cancer than people who don’t smoke. Even one cigarette now and then might hurt your social life too. Like regular smokers, social smokers have the smell of smoke on their […]

How was Adam and Eve created? In the second narrative, God fashions Adam from dust and places him in the Garden of Eden. Adam is told that he can eat freely of all the trees in the garden, except for a tree of the knowledge of good and evil. Subsequently, Eve is created from one […]

Who is the highest ranking official in a county? A County executive, County manager or County mayor is the head of the executive branch of government in a United States county. Do any counties cross state lines? Geographic Hierarchy For example, a line extends from states to counties because a state is comprised of many […]

Who has the strongest kick in soccer? Therefore, our top 10, as it stands, is … David Hirst – 114mph (for Sheffield Wednesday @ Arsenal on September 16 1996) David Beckham – 97.9mph (for Man Utd v Chelsea on February 22 1997) David Trezeguet – 96mph (for Monaco @ Man Utd on March 19 1998) […]

What is the most accurate clock? Atomic clocks What is Big Ben’s real name? The clock tower widely known as Big Ben is to be renamed the Elizabeth Tower in honour of the Queen, the House of Commons has confirmed. How far away can Big Ben be heard? 5 miles Does Big Ben chime on […]

What is the transfer function of a servo motor? Transfer function of a LTIV system is defined as the ratio of the Laplace Transform of the output variable to the Laplace Transform of the input variable assuming all the initial condition as zero. How do you control a DC servo motor? The speed of PMDC […]

Is an Organisation a closed system? A business that operates an open system interacts with its environment through giving and receiving information. In a closed system, interactions only happen within the specific system, which means closed systems are shut off from the outside environment, and every interaction is transmitted inside that closed system. How can […]

When two bodies stick together the collision is said to be? Key terms Term (symbol) Meaning Totally inelastic collision Collision where the objects stick together and have the same final velocity. Also called a perfectly inelastic collision. Explosion Reverse inelastic collision where momentum is conserved and kinetic energy increases. When two bodies stick together during […]