How many slaves did Mansa Musa have? 12,000 slaves How rich was Mansa Musa in today’s money? With camel-loads of gold and salt, Mansa Musa’s net worth has been valued by modern-day scholars to be around $400 to $415 billion in modern money. Is King Solomon the richest man ever? Then there’s King Solomon, who […]
Does blue light have a higher frequency than green?
Does blue light have a higher frequency than green? Blue light has a shorter wavelength and therefore a higher frequency. Blue light has a shorter wavelength and therefore a higher frequency as compared to green light. Some reptiles can see light of shorter wavelengths than humans can see. Which is the least refracted Colour in […]
Why is burning of candle is both physical and chemical change?
Why is burning of candle is both physical and chemical change? Wax of the candle is made of carbon and hydrogen which reacts with oxygen on burning and changes into carbon dioxide gas and water which escapes into the air. This is a chemical change. As a result, candle melts and reduces in size. This […]
What element is similar to nickel?
What element is similar to nickel? Metal Can nickel exist as a gas? Elements can be classified based on their physical states (States of Matter) e.g. gas, solid or liquid. This element is a solid. Nickel is classified as a “Transition Metal” which are located in Groups 3 – 12 of the Periodic Table. What […]
What is the best frequency for a tuning fork?
Can an elliptical galaxy evolve into a spiral can a spiral turn into an elliptical How?
Can an elliptical galaxy evolve into a spiral can a spiral turn into an elliptical How? We know this because spiral galaxies rotate quickly (on an astronomical scale), while elliptical galaxies do not. There is no way that an elliptical galaxy could spontaneously begin rotating, so there is no way an elliptical galaxy could turn […]
How does volume affect rms speed?
How does volume affect rms speed? Since the temperature is remaining constant, the average kinetic energy and the rms speed remain the same as well. The volume of the container has decreased, which means that the gas molecules have to move a shorter distance to have a collision. What is the rms speed? The root-mean-square […]
What is the word pandemic mean?
What is the word pandemic mean? : an outbreak of a disease that occurs over a wide geographic area (as multiple countries or continents) and typically affects a significant proportion of the population : a pandemic outbreak of a disease. More from Merriam-Webster on pandemic. How long did the 1918 flu pandemic last? The influenza […]
Who invented the zodiac?
Who invented the zodiac? Babylonians Are there 12 or 13 zodiac signs? Earth actually travels through 13 signs, including Capricorn, Aries, and, yes, Ophiuchus, but some 3,000 years ago the Babylonians—not NASA—decided 12 was neater than 13, so excluded the 13th zodiac sign and divided the zodiac into 12 parts based on the 12 months […]
Do longitudinal waves have nodes?
Do longitudinal waves have nodes? Longitudinal wave – a wave that is propagated in the same direction as the displacement of the transmitting medium. Node – A node is a point along a standing wave where the wave has zero amplitude. A wave center is stable at the node of the standing wave. What is […]