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 […]
Does odometer measure speed or velocity?
Does odometer measure speed or velocity? The odometer gives us only the measure but doesn’t show the direction of velocity. The odometer measures the scalar quantity – the speed of the car. The device may be electronic or mechanical or a combination of the two. How do you calculate distance traveled using odometer? The formula […]
What is malleability and example?
What is malleability and example? It is the ability of a solid to bend or be hammered into other shapes without breaking. Examples of malleable metals are gold, iron, aluminum, copper, silver, and lead. Gold and silver are highly malleable. The property is not seen in non-metals. What do you mean by ductility class 8? […]
What is a good amount of kJ to burn a day?
What is a good amount of kJ to burn a day? In order to achieve weight loss an individual needs to consume less energy (kilojoules) than the will body burn. For example if an individual needs 8,700 kilojoules per day to maintain weight, reducing daily intake to 6,600 kilojoules (assuming exercise stays the same), should […]
What is the effect of molecular weight on melting and boiling points of alkanes?
What is the effect of molecular weight on melting and boiling points of alkanes? Their melting and boiling points of alkanes are relatively low. The higher the molecular weight (the greater the number of carbons), the higher the boiling point. What is the major use of alkanes? Use of Alkanes Alkanes are important raw materials […]
Which light is not seen from the Earth?
Which light is not seen from the Earth? What Does Invisible Light Do? Electromagnetic waves are all around us. This includes not only visible light, but also invisible ultraviolet and infrared rays. Infrared rays, with wavelengths longer than visible light, are also a familiar part of electrical appliances. Are there stars we Cannot see? All […]
Why are there two neap tides monthly?
Why are there two neap tides monthly? Neap tides, which also occur twice a month, happen when the sun and moon are at right angles to each other. During full or new moons—which occur when the Earth, sun, and moon are nearly in alignment—average tidal ranges are slightly larger. This occurs twice each month. How […]
What is temperature on a PV diagram?
What is temperature on a PV diagram? With everything tied together by the ideal gas law, one variable can always be described as dependent on the other two. Temperature is the slave of pressure and volume on a pressure-volume graph (PV graph). What is name of the curve obtained in PV diagram? Only two thermodynamic […]
Is compulsion the same as addiction?
Is compulsion the same as addiction? The difference between compulsive behaviors and addiction is urge versus need. A compulsion is an insatiable urge to do something. Addiction is a need to do something to experience pleasure or remove discomfort. Is addiction a form of OCD? OCD causes anxiety, depression and even suicidal thoughts when left […]
How much does an elephant cost?
How much does an elephant cost? Photo courtesy of The David Sheldrick Wildlife Trust. In their report, iworry estimated the raw-ivory value of a poached elephant to be $21,000. In contrast, a living elephant is worth more than $1.6 million over its lifetime, largely because of its eco-tourism draw. Can I own a baby elephant? […]