What are the advantages and disadvantages of Mendeleev classification? When noble gases were discovered can be kept in a separate group without disturbing the existing order. Disadvantages: He couldn’t allocate a correct position to hydrogen. Atomic masses didn’t increase in a regular manner, so it was impossible to predict how many elements could be discovered […]
How do I mask an image layer?
What is the formula for distance in physical science?
Is a protozoa a virus?
Is a protozoa a virus? Diseases that are caused by viruses include the common cold, influenza, herpes, yellow fever, shingles, rabies, polio, and mononucleosis. Protozoa are single celled organisms. Most protozoa do not cause infections, but a few do. Malaria, dysentery, African sleeping sickness are caused by different species of protozoa. How can you distinguish […]
What is the important of digestive juices in digestive system?
What is the important of digestive juices in digestive system? Your pancreas makes a digestive juice that has enzymes that break down carbohydrates, fats, and proteins. The pancreas delivers the digestive juice to the small intestine through small tubes called ducts. Liver. Your liver makes a digestive juice called bile that helps digest fats and […]
What was the conclusion of the gold foil experiment?
What was the conclusion of the gold foil experiment? Rutherford’s gold foil experiment showed that the atom is mostly empty space with a tiny, dense, positively-charged nucleus. Based on these results, Rutherford proposed the nuclear model of the atom. Why was gold foil used in Rutherford’s experiment? Rutherford used gold for his scattering experiment because […]
Does without slipping mean no friction?
Does without slipping mean no friction? For many dynamics problems, rolling without slipping means there is a friction force acting on the wheel at the contact point P. This friction force prevents slipping. In this instance the friction is known as static friction since there is no relative sliding between the wheel and surface at […]
What energy transformation takes place in a dry cell B electric fan?
What energy transformation takes place in a dry cell B electric fan? 1) in dry cell – chemical energy is converted to electrical energy. 2) In electric fan – electrical energy is converted to mechanical energy and wind energy . Which energy is converted in an electric cell? An electrical cell is an “electrical power […]
Can a car run on jet fuel?
Can a car run on jet fuel? Jet fuel can actually be used in cars, but only in diesel engines. Kerosene jet fuel and diesel are actually similar enough to allow for cross-functionality and would provide a similar performance. Both are derived from crude oil, and both run their respective engines on combustion. How much […]
What are the 5 categories of adaptations?
What are the 5 categories of adaptations? The five categories of the adaptations are migration, hibernation, dormancy, camouflage, and estivation. The migration can be defined as the phenomenon of the movement of the animals from one region to another in order for their survival. What is an example of an amazing animal adaptation? Kangaroo rats […]