Which system of Signalling is used on a single line? Electric token To provide for this, the electric train token system was developed. Each single-line section is provided with a pair of token instruments, one at the signal box at each end. What is single line and double line? A double-track railway usually involves running […]
Do Eye Drops help with eye strain?
Do Eye Drops help with eye strain? Over-the-counter artificial tears can help prevent and relieve dry eyes. Use them even when your eyes feel fine to keep them well-lubricated and prevent a recurrence of symptoms. Your doctor can suggest which eyedrops might be best for you. What foods help eye strain? Ten best foods for […]
How do you start writing a hypothesis?
How do you start writing a hypothesis? Developing a hypothesis Ask a question. Writing a hypothesis begins with a research question that you want to answer. Do some preliminary research. Formulate your hypothesis. Refine your hypothesis. Phrase your hypothesis in three ways. Write a null hypothesis. What is a good sentence for hypothesis? Their hypothesis […]
What system uses oxygen for energy?
What system uses oxygen for energy? Aerobic Glycolysis How does oxygen create energy? Your body cells use the oxygen you breathe to get energy from the food you eat. This process is called cellular respiration. During cellular respiration the cell uses oxygen to break down sugar. When the cell uses oxygen to break down sugar, […]
What law is the reason why we balance chemical equations?
What law is the reason why we balance chemical equations? Re: Why do we balance chemical equations? We balance chemical equations due to the law of conservation of mass, which states that mass can neither be created or destroyed. Therefore, in a chemical reaction, the total mass of the reactants must be equal to the […]
Which of the following is an example of oxidation?
Which of the following is an example of oxidation? Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust. Iron and steel rust when they come into contact with water and oxygen – both are needed for rusting to occur. What are three […]
What are the processes of physical and chemical weathering?
What are the processes of physical and chemical weathering? Physical, or mechanical, weathering happens when rock is broken through the force of another substance on the rock such as ice, running water, wind, rapid heating/cooling, or plant growth. Chemical weathering occurs when reactions between rock and another substance dissolve the rock, causing parts of it […]
How dangerous is the luge?
How dangerous is the luge? With speeds up to 90 mph, luge is one of the most dangerous sports in the Olympic Games. Luge is similar to skeleton but with athletes sliding down with their face up and feet first. This high-speed sport requires good upper-body strength and efficient navigation of the course. What is […]
What are some the practical applications of science in your life?
What are some the practical applications of science in your life? Science is involved in cooking, eating, breathing, driving, playing, etc. The fabric we wear, the brush and paste we use, the shampoo, the talcum powder, the oil we apply, everything is the consequence of advancement of science. Life is unimaginable without all this, as […]
Does hypertonic move in or out?
Does hypertonic move in or out? Tonicity and cells Tonicity of solution Solute concentration Water moves… Hypertonic Higher solute in solution than in cell Out of the cell Isotonic Equal amounts of solute in cell and solution Into and out of cell at the same time Hypotonic Lower solute in solution than in cell Into […]