Is a device that absorbs the sun radiant energy?

Is a device that absorbs the sun radiant energy? solar collector What type of energy transfer does not require matter? 1. The transfer of thermal energy by conduction and convection does not require matter. 2. The transfer of thermal energy by radiation does not require matter. How does insulation stop unwanted energy transfers? Energy loss […]

Which is an example of a human made disaster?

Which is an example of a human made disaster? Man-made disasters are extreme hazardous events that are caused by human beings. Some examples of man-made disaster emergencies include chemical spills, hazardous material spills, explosions, chemical or biological attacks, nuclear blast, train accidents, plane crashes, or groundwater contamination. What is the largest man-made disaster? The Bhopal […]

Is strong force always attractive?

Is strong force always attractive? Contrary to popular belief, the strong force between quarks is not always attractive. Quarks of different color experience an attractive force between them; whereas quarks of a like color repel each other. What is the opposite of rotten? rotten(adj) having decayed or disintegrated; usually implies foulness. “dead and rotten in […]

How can we be a responsible citizen?

How can we be a responsible citizen? Here’s a list of 10 things you can do right now to be a better citizen. Volunteer to be active in your community. Be honest and trustworthy. Follow rules and laws. Respect the rights of others. Be informed about the world around you. Respect the property of others. […]

How long will a white dwarf star last?

How long will a white dwarf star last? Eventually—over tens or even hundreds of billions of years—a white dwarf cools until it becomes a black dwarf, which emits no energy. Because the universe’s oldest stars are only 10 billion to 20 billion years old there are no known black dwarfs—yet. What happens after white dwarf […]

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