How do you determine if there is a hydraulic jump? A hydraulic jump occurs when the upstream flow is supercritical (F>1). To have a jump, there must be a flow impediment downstream. The downstream impediment could be a weir, a bridge abutment, a dam, or simply channel friction. Water depth increases during a hydraulic jump […]
What are the 3 aspects of sound?
What are the 3 aspects of sound? Sound waves are changes in pressure generated by vibrating molecules. The physical characteristics of sound waves influence the three psychological features of sound: loudness, pitch, and timbre. Loudness depends on the amplitude,or height, of sound waves. The greater the amplitude, the louder the sound perceived. What is the […]
How do I calculate density?
Who were the vandals?
Who were the vandals? The Vandals were a “barbarian” Germanic people who sacked Rome, battled the Huns and the Goths, and founded a kingdom in North Africa that flourished for about a century until it succumbed to an invasion force from the Byzantine Empire in A.D. 534. What does the word vandals mean? : a […]
Did Romans water down their wine?
Did Romans water down their wine? It’s true that ancient Greeks and Romans mixed water and wine—but technically they were putting wine into their water more than they were putting water into their wine. There are also reports of adding lemon, spices, resin or even seawater to dilute wine. What does adding water to wine […]
What are organic and inorganic shapes?
What are organic and inorganic shapes? Organic lines are loose, curving lines like those found in nature. Inorganic lines are generally straight or perfectly curving lines, like those found in geometry. What are organic forms in art? Organic forms look natural. They are irregular and may seem flowing and unpredictable. The most obvious example of […]
What made Roman aqueducts so special?
What made Roman aqueducts so special? They were made from a series of pipes, tunnels, canals, and bridges. Gravity and the natural slope of the land allowed aqueducts to channel water from a freshwater source, such as a lake or spring, to a city. The most recognizable feature of Roman aqueducts may be the bridges […]
What happens if you get egg yolk in meringue?
What is the tonic note of a scale?
What is the tonic note of a scale? Tonic, also called keynote, in music, the first note (degree) of any diatonic (e.g., major or minor) scale. It is the most important degree of the scale, serving as the focus for both melody and harmony. Why is it called the diatonic scale? The word “diatonic” comes […]
What are some causes of hair loss?
What are some causes of hair loss? Causes of hair loss Hereditary hair loss. Both men and women develop this type of hair loss, which is the most common cause of hair loss worldwide. Age. Alopecia areata. Childbirth, illness, or other stressors. Hair care. Hairstyle pulls on your scalp. Hormonal imbalance. Scalp infection. What is […]