How can you determine if the liquid is water? A very easy solution is to take a sample of colourless liquid and put on stove if it starts boiling exactly at 100 ºC then it is pure water. Any other colourless liquid such as vinegar always have different boiling point. How do you identify whether […]
Why did Germany worry about the alliance between France and Russia?
Why did Germany worry about the alliance between France and Russia? 1 Answer. Probably because Germany was and still is located in between the two nations and, in case of war, would have been forced to fight on two fronts simultaneously (a not very strategical advantageous situation indeed!). Is France allied with Russia? Dual Alliance, […]
What results when a wave reflects off a fixed boundary?
What are the 5 core democratic values?
What are the 5 core democratic values? Liberty and equality. These words represent basic values of democratic political systems, including that of the United States. Rule by absolute monarchs and emperors has often brought peace and order, but at the cost of personal freedoms. What are the 4 values of democracy? According to American political […]
How do photographers use strobes?
How do photographers use strobes? You simply punch two numbers into the light meter that you set your camera for (shutter speed and ISO). Then you ‘fire’ your strobe light while holding the light meter in front of your subject. The light meter will display an aperture number. What light is used to reduce shadows? […]
Why can you safely hold your bare hand in a 200 ◦ C oven for a few seconds?
What is a different source of water?
What is a different source of water? 3.1 Types of water source. In Study Session 1 you were introduced to the three main sources of water: groundwater, surface water and rainwater. In arid regions where seawater is accessible (such as in the Middle East), desalination (the removal of salts from water) is used to generate […]
Can white noise kill you?
Can white noise kill you? Does Noise harm your Brain? Well yes. It turns out, the continuous background noise also known as white noise which comes from machines and other appliances, can harm your brain, it does so by overstimulating your auditory cortex– the part of the brain that helps us perceive sound. And it’s […]
What is the biggest disaster in history?
What is the biggest disaster in history? Ten deadliest natural disasters by highest estimated death toll excluding epidemics and famines Rank Death toll (Highest estimate) Event 1. 4,000,000 1931 China floods 2. 2,000,000 1887 Yellow River flood 3. 830,000 1556 Shaanxi earthquake 4. 655,000 1976 Tangshan earthquake How do we reduce disaster risk? Reducing exposure […]
What is the relationship between the kidneys and the liver?
What is the relationship between the kidneys and the liver? Generally speaking, the liver and kidney are key organs for regulation of homeostasis and metabolism in the body: the liver is the major player for metabolism of glucose (energy), protein, and lipid, and kidney is that for homeostasis of water, electrolytes, and acid-base balance. What […]