Why do we have planets? The order and arrangement of the planets and other bodies in our solar system is due to the way the solar system formed. Nearest the Sun, only rocky material could withstand the heat when the solar system was young. For this reason, the first four planets—Mercury, Venus, Earth and Mars—are […]
Can vegetarians eat jelly fruit?
Can vegetarians eat jelly fruit? Is Jelly vegetarian? If you’re talking about jelly that is used as a spread- yes, it’s usually vegetarian as they use pectin (which comes from plants) as the gelling agent. Are jellies non vegetarian? Jelly sweets or jelly desserts are a favorite of kids; many vegetarians prefer serving a bowl […]
How were Greek soldiers buried?
How were Greek soldiers buried? If a body was left unburied it was a violation of the laws of war to refuse burial to the dead soldier. After 1100 BCE, Greeks buried the dead primarily in individual graves. Athens was the major exception as the Athenians usually cremated the dead and placed their ashes in […]
How did Jane Goodall become a scientist?
How did Jane Goodall become a scientist? Leakey, who believed that studying other primates would help scientists to understand early hominid societies, saw in Jane someone with the right personality to begin a long term study. He hired her first as a secretary for his dig at Olduvai Gorge. Leakey later arranged for Jane to […]
What is the fundamental period of the following discrete time signal?
What is the fundamental period of the following discrete time signal? Therefore, a discrete-time sinusoid is periodic if its radian frequency Ω is a rational multiple of π. Otherwise, the discrete-time sinusoid is non-periodic. The fundamental period is 12 which corresponds to k = 1 envelope cycles. What is the time period of the signal? […]
Is F22 A VTEC?
Is gymnastics harder than figure skating?
Is gymnastics harder than figure skating? Gymnastics is popular for its back flips, but skating is renowned for its turns. Gymnastics needs more versatility, so guess what? Getting back up after slipping on the cold, rough ice hurts. Gymnastics, in my experience, needs more natural ability, while figure skating requires more practise. Is figure skating […]
Are firefighters pyromaniacs?
Are firefighters pyromaniacs? There are pathological reasons some people set fires, but while you might hear the word “pyromaniac” thrown around lightly, there is a difference between those who are literally pyromaniacs — whose motivation is to obtain pleasure from watching fires burn — and those in most firefighter arson cases. Are firefighters more likely […]
Is air always compressible?
Is air always compressible? For low subsonic flow (less than about Mach 0.3), we usually treat air as being incompressible. It greatly simplifies the math and does not cause much error. But air is definitely compressible. No real fluid is incompressible. Is compressed air flammable? Keep in mind that canned air, those small cans of […]
Why is reducing carbon footprint difficult?
Why is reducing carbon footprint difficult? Firstly, lower than expected demand for a commodity results in lower prices making a further reduction in demand more difficult. Resulting low coal prices led to increasing demand (be it not as high as initially expected) and an increase in the market share of coal in the global primary […]