What does the flat part of a heating curve indicate? Heating curves show how the temperature changes as a substance is heated up. Cooling curves are the opposite. They show how the temperature changes as a substance is cooled down. Just like heating curves, cooling curves have horizontal flat parts where the state changes from […]
How do spectrographs help astronomers classify stars quizlet?
How do spectrographs help astronomers classify stars quizlet? The astronomers use the spectrographs to classify the stars on the basis of the composition of the elements present in them. The element present in them absorbs all the wavelengths of light and reflects back the wavelength which is not absorbed by the element. Which of the […]
Is baking bread an exothermic reaction?
Is baking bread an exothermic reaction? In addition to smelling delicious, baking bread is an endothermic example. The flour, yeast, and other ingredients used in creating the dough are heated. They absorb the heat making chemical reactions happen. Is Melting ice exothermic or endothermic? As a result, the temperature of the ice rises and it […]
Do fuses and circuit breakers protect people?
Do fuses and circuit breakers protect people? When correctly selected and applied, circuit breakers, fuses, and other protection components can help keep workers safe from injuries and machines from damage. Which of the following circuit breakers will reset automatically? Type I: Automatic Reset Circuit Breakers Automatic means a breaker self-resets without help from the user. […]
Which element is more reactive to oxygen?
Which element is more reactive to oxygen? Magnesium has a very high reactivity with oxygen. Magnesium oxide is formed. Zinc burns fairly bright. Is oxygen reactive at room temperature? Oxygen is a highly reactive gas at room… | by ?????????????, scientist & writer | Medium. Is nitrogen reactive or not? Nitrogen is a rather unreactive […]
Which mixture can be separated?
Which mixture can be separated? A mixture is a material containing two or more elements or compounds that are in close contact and are mixed in any proportion. For example, air, sea water, crude oil, etc. The constituents of a mixture can be separated by physical means like filtration, evaporation, sublimation and magnetic separation. What […]
Which of the following is the simplest forecasting method?
Which of the following is the simplest forecasting method? #1 Straight-line Method The straight-line method is one of the simplest and easy-to-follow forecasting methods. What is forecasting and its examples? Forecasting involves the generation of a number, set of numbers, or scenario that corresponds to a future occurrence. For example, the evening news gives the […]
How can you tell the difference between feldspar and quartz?
How can you tell the difference between feldspar and quartz? Explain Since both quartz and feldspar are considered hard and would scratch glass after a hardness test, you can tell the difference by the mineral’s cleavage. Quartz has poor or absent cleavage, while feldspar has excellent or good cleavage. Which is harder quartz or feldspar? […]
How is energy transferred and transformed in a bicycle?
How is energy transferred and transformed in a bicycle? Energy transformation While riding a bicycle, the muscular energy of the rider gets transferred into the heat energy and kinetic energy of the bicycle. Heat energy heats the rider’s body. During the transformation, the total energy remains conserved. How many watts is 25 mph? Cycling Power […]