Why does the filament in a light bulb glow more brightly when an electric current is slowly increased? 4.As the electric current in a lightbulb is slowly increased, the filament glows more and more brightly. Why does this happen? As the current increases, the electrons more frequently bump into more atoms of the resistor (filament) […]
At what speed do airbags become ineffective?
At what speed do airbags become ineffective? For unbelted occupants the effectiveness goes to zero or becomes negative above 40 kph (25 mph) for MAIS 3+, and for belted occupants the effectiveness stays positive but with significantly lower magnitude for speeds above 40 kph (25 mph). What if my airbags didn’t deploy? If your airbag […]
What are the five properties of alkalis?
What are the five properties of alkalis? Chemical Properties of Alkalis Alkalis react with Acids to form salt and water. This reaction is called neutralisation reaction. Alkalis react with ammonium salts to form salt, water and ammonia gas. Alkalis react with solution of metal salt to form another metal salt and hydroxide. What are the […]
What is difference between preventive and periodic maintenance?
What is difference between preventive and periodic maintenance? The main difference between the two is that preventive maintenance is scheduled at regular intervals while predictive maintenance is scheduled as needed (based on asset conditions). These costs are often acceptable to organizations that have already successfully implemented a preventive maintenance program. What are the benefits of […]
Why do fizzy tablets dissolve faster in hot water?
Why do fizzy tablets dissolve faster in hot water? In the hot water the tablet should have more vigorously produced bubbles than in the cold water. The higher the temperature, the faster the molecules move—and the more likely it is that the bicarbonate will contact hydrogen in just the right way for the chemical reaction […]
Which is the pathway for information through a neuron?
Which is the pathway for information through a neuron? Explanation: The pathway for information through neuron are dendrite → cell body → axon → axon terminals and this because Dendrite is the input zone of nerve cell where neuron can receive information from another nerve cell. How do neurons send signals? Communication among neurons typically […]
How much does the tension in the string increase if we double the speed?
How much does the tension in the string increase if we double the speed? When the wave relationship is applied to a stretched string, it is seen that resonant standing wave modes are produced. So, if we double the tension the speed will increase 1.41 times or root (2) times. What happens if weight is […]
What is form according to Plato?
What is form according to Plato? In basic terms, Plato’s Theory of Forms asserts that the physical world is not really the ‘real’ world; instead, ultimate reality exists beyond our physical world. The Forms are abstract, perfect, unchanging concepts or ideals that transcend time and space; they exist in the Realm of Forms. Did Plato […]
Is the only source of heat and light?
Is sweating sympathetic or parasympathetic?
Is sweating sympathetic or parasympathetic? We need sweating to control body temperature; water evaporating from the skin cools the body. Sweating is under the control of the sympathetic nervous system, which orchestrates the body’s reaction to stressful situations and emergencies—sometimes called the “fight or flight” response. How do emotions affect the autonomic nervous system? The […]