What primary advantage if any does a ball bearing have over a roller bearing? As a general rule, ball bearings are used at higher speeds and lighter loads than are roller bearings. Roller bearings perform better under shock and impact loading. What are similarities and differences between a plain bearing and a roller bearing? Rollers […]
What are two most abundant elements in magma?
What are two most abundant elements in magma? Being that oxygen and silicon are the most abundant elements in magma, geologists define magma types in terms of their silica content, expressed as SiO2. These differences in chemical composition are directly related to differences in gas content, temperature, and viscosity. What is magma very short answer? […]
Why do we see sun before sunrise?
Why do we see sun before sunrise? The rising sun is visible to us before actual sun rise and after actual sunset because of the atmospheric refraction of light. The rays from the sun coming through space enter from rarer to the denser medium and hence bend slightly towards normal at each refraction and become […]
What are the similarities between mitochondria and chloroplast?
What are the similarities between mitochondria and chloroplast? Both the chloroplast and the mitochondrion are organelles found in the cells of plants, but only mitochondria are found in animal cells. The function of chloroplasts and mitochondria is to generate energy for the cells in which they live. The structure of both organelle types includes an […]
What are mixtures that Cannot be separated?
What are mixtures that Cannot be separated? An element is a pure substance that cannot be separated into simpler substances by chemical or physical means. There are about 117 elements. Which type of matter Cannot be broken down any smaller? a pure or elementary substance cannot be broken down into smaller or simpler constituents without […]
Is jellyfish a Benthos?
Is jellyfish a Benthos? Jellyfish are usually thought of as drifting organism there are in fact some forms of medusae and ctenophores that are benthic, with the adult sexual stage spending their entire life on the seafloor. Where would you most likely find benthos organisms? Explanation: Benthos organisms can be defined as the set organisms […]
What is difference between invertebrates and vertebrates?
What is difference between invertebrates and vertebrates? Vertebrates are more complex organisms when compared to invertebrates. The primary difference between the two is that vertebrates possess a backbone and an internal skeleton. What are the five fish vertebrate classes? Vertebrate Classification. Vertebrates can be subdivided into five major groups: fishes, amphibians, reptiles, birds, and mammals. […]
Under what conditions is carbon dioxide more soluble in a soda drink?
Under what conditions is carbon dioxide more soluble in a soda drink? At equilibrium, the rate of gaseous CO2 dissolving is equal to the rate of dissolved CO2 coming out of the solution. When carbonated beverages are packaged, they are done so under high CO2 pressure so that a large amount of carbon dioxide dissolves […]
How Machines make our life easier?
How Machines make our life easier? But how do these machines help? Simple machines make our lives easier by changing the amount of force or the direction of the force being applied (added). There are four simple machines that we use most often in our lives. An inclined plane is a slanted surface that helps […]
Is distance a scalar or vector?
Is distance a scalar or vector? Distance is a scalar quantity that refers to “how much ground an object has covered” during its motion. Displacement is a vector quantity that refers to “how far out of place an object is”; it is the object’s overall change in position. Why distance is called a scalar quantity? […]