Which of the following is an example of a primary source? Examples of primary sources: Theses, dissertations, scholarly journal articles (research based), some government reports, symposia and conference proceedings, original artwork, poems, photographs, speeches, letters, memos, personal narratives, diaries, interviews, autobiographies, and correspondence. Why do you think most history textbook are secondary sources? In most […]
How do you calculate half life?
Why green light is used in traffic signal?
Why green light is used in traffic signal? Green Light traffic Rules Just like a red light corresponds to danger and STOP, the green light signals safety and the word GO. However, just to play it really safe, you should first let any vehicle remaining in the intersection pass before you go ahead. What does […]
Is Coke a fossil fuel?
Is Coke a fossil fuel? Coal gas, coke and producer gas are the byproducts of coal and are not fossil fuels, except natural gas which is a fossil fuel. Does holding your breath make your lungs stronger? Holding breath benefits Holding your breath, as well as generally improving breathing and lung function, has useful, potentially […]
What are the 10 mineral resources?
What are the 10 mineral resources? [PHOTOS] 10 minerals that make modern life work Iron ore. Silver. Gold. Cobalt. Bauxite. Lithium. Zinc. Potash. What are the 7 types of minerals? Types of minerals Native elements. eg. Gold, Silver, Mercury, graphite, diamond. Oxides. eg corundum (incl. sapphire), hematite, spinel. Hydroxides. eg. Goethite, brucite. Sulfides. eg. Pyrite, […]
Why does a pendulum eventually slow down and stop swinging?
Why does a pendulum eventually slow down and stop swinging? A pendulum is an object hung from a fixed point that swings back and forth under the action of gravity. The swing continues moving back and forth without any extra outside help until friction (between the air and the swing and between the chains and […]
Where is noise pollution most common?
Where is noise pollution most common? Guangzhou, China, ranked as having the worst levels of noise pollution in the world, followed by Cairo, Paris, Beijing and Delhi. Of the 50 cities, Zurich was found to have the least noise pollution. Participants in Delhi recorded the highest average hearing loss – equivalent to someone 19.34 years […]
What are the similarities and differences between gravitational and electric fields?
What are the similarities and differences between gravitational and electric fields? Electric vs Gravitational Force Similarities Differences Both have fields Electric force can be both repulsive and attractive but gravity only attracts Both have potential lines Electric force results from charge but gravitational force results from mass Can electric fields be negative? An electric field […]
How many types of spherical mirror are there?
When should you leave an expressway?
When should you leave an expressway? Avoid using your turn signal. When exiting an expressway, it is important to be alert to other traffic moving nearby. Be sure to look at the new posted speed limit and check your speedometer. It is unlikely that you will be exiting onto a road with a speed limit […]