What is the greatest degree of precision? pipette How precise is a cm ruler? We can say that the measuring instrument is readable to ±0.05 cm. The ±0.05 cm means that your measurement may be off by as much as 0.05 cm above or below its true value. This value is called the uncertainty or […]
What is tolerance in a resistor?
What is tolerance in a resistor? The tolerance of a resistor is the maximum difference between its actual value and the required value and is generally expressed as a plus or minus percentage value. For example, a 1kΩ ±20% tolerance resistor may have a maximum and minimum resistive value of: Maximum Resistance Value. What are […]
Who used a compound microscope to see Chambers?
Who used a compound microscope to see Chambers? Robert Hooke What details can Electron microscopes reveal? As the wavelength of an electron can be up to 100,000 times shorter than that of visible light photons, electron microscopes have a higher resolving power than light microscopes and can reveal the structure of smaller objects. What type […]
Why do metals gain electrons?
Why do metals gain electrons? Metals: Metals like to lose valence electrons to form cations to have a fully stable octet. They absorb energy (endothermic) to lose electrons. The electron affinity of metals is lower than that of nonmetals. Nonmetals: Nonmetals like to gain electrons to form anions to have a fully stable octet. Are […]
Which is better leaf or coil springs?
Which is better leaf or coil springs? Leaf springs are better for heavier vehicles and those who may need to haul more weight. They’re also simpler but less adjustable than coil springs. Coil spring suspension systems are better for performance driving as you can fine-tune your suspension. They offer greater comfort and flexibility for improved […]
Are hydrogen balloons safe?
Are hydrogen balloons safe? “Since hydrogen is an unstable, inflammable gas, there is a great danger associated with hydrogen balloons. They easily explode and catch fire. “Flying balloons are filled with gas lighter than the atmospheric air, usually helium and hydrogen. Can hydrogen be used for balloons? Hydrogen is another gas lighter than air; it’s […]
Is oil really fossil fuel?
Is oil really fossil fuel? Fossil fuels include coal, petroleum (oil), natural gas, oil shales, bitumens, and tar sands and heavy oils. For modern life, these energy sources rival food and water in importance. Why can’t we get rid of fossil fuels? We understand today that humanity’s use of fossil fuels is severely damaging our […]
Can we split a quark?
Can we split a quark? Quarks,and leptons are thought to be elementary particles, that is they have no substructure. So you cannot split them. Quarks are fundamental particles and cannot be split. Can you split a Preon? The smallest you could break an atom down would be to hydrogen, with one proton, one neutron and […]
What produces new cells during growth and repair?
What produces new cells during growth and repair? The Purpose of the Reproduction Both sexual and asexual organisms go through the process of mitosis. It happens in the cells of the body known as the somatic cells and produces cells related to growth and repair. Mitosis is essential for asexual reproduction, regeneration, and growth. Do […]
What are the 4 elements of science fiction?
What are the 4 elements of science fiction? Science fiction contains the usual elements of the novel: a specific setting, character development, plot (central conflict, complications, climactic events, resolution), themes, and structure. How can you tell if a story is science fiction? Science fiction is a genre of fiction in which the stories often tell […]