What is the specific gravity of propane liquid? LPG Properties Chart LPG – Propane Boiling Point -42 °C or -44 °F Specific Gravity of Liquid LPG-Propane 0.495 (25°C) LPG Density Propane Gaseous Density 1.898 kg/m3 (15°C) or 0.1162 lb/ft3 Energy Content of LPG 25 MJ/L or 91,547 BTU/Gal (60°F) LPG Gaseous Expansion 1 L (liquid) […]
Why do some students struggle with learning and completing tasks?
Why do some students struggle with learning and completing tasks? Students struggle in individual activities because they did not gain deep understanding during previous group work. It is a natural phenomenon that some members of a group are more or less engaged in performing the task at hand (i.e., they were watching or listening without […]
What makes sunsets so beautiful?
What makes sunsets so beautiful? Clean air is, in fact, the main ingredient common to brightly colored sunrises and sunsets. To understand why this is so, one need only recall how typical sky colors are produced. The familiar blue of the daytime sky is the result of the selective scattering of sunlight by air molecules. […]
What is difference between material and substance?
What is difference between material and substance? Material: The material is a Something that has Certain Characteristics which are used to manufacture or to produce the desired product. For example, Water and Fibres are examples of Material. 2. Substance: A Substance is a matter that has a definite structure or composition. What is a pure […]
What are the four south poles?
What are the four south poles? Of the many interesting historical facts and stories he told, the students were amazed to find there are four South Poles on the Earth’s crust: The Geographic South Pole. The South Magnetic Pole. The Geomagnetic Pole. Will Earth ever lose its magnetic field? The direction and intensity of the […]
Are lab experiments valid?
Are lab experiments valid? – Results of laboratory experiments tend to be reliable, as the conditions created (and thus results produced) can be replicated. – Data collected may lack ecological validity, as the artificial nature of laboratory experiments can cast doubt over whether the results reflect the nature of real life scenarios. What are the […]
What are the similarities and differences between anatomy and physiology?
What are the similarities and differences between anatomy and physiology? Whereas anatomy is about structure, physiology is about function. Human physiology is the scientific study of the chemistry and physics of the structures of the body and the ways in which they work together to support the functions of life. What is the most important […]
Can you have a zero tangential and nonzero centripetal acceleration?
Can you have a zero tangential and nonzero centripetal acceleration? If our object is increasing its speed or slowing down, there is also a non-zero tangential acceleration in the direction of motion. But when the object is moving at a constant speed in a circle then only the centripetal acceleration is non-zero. Can a car […]
What makes a star twinkle?
What makes a star twinkle? As light from a star races through our atmosphere, it bounces and bumps through the different layers, bending the light before you see it. Since the hot and cold layers of air keep moving, the bending of the light changes too, which causes the star’s appearance to wobble or twinkle. […]