Category: Physics

How did humans survive in the ice age? During the Ice Age, the Earth’s average temperature was about 12 degrees Fahrenheit colder than it is today. That was enough to keep snow from melting during the summers in northern regions. People could survive in winters now, so people could survive in winters then. What ended […]

What body part has the most bones? The hands and feet contain over half of the body’s bones. Coming out on top are your hands and feet. Each hand has 27 bones, and each foot has 26, which means that together the body’s two hands and two feet have 106 bones. That is, the hands […]

What are the top 10 densest elements? The 10 Densest Metals: Osmium 22.6 g/cm^3. Similar to Iridium, osmium is a hard-brittle transition metal that looks bluish-white. Iridium 22.4 g/cm^3. Platinum 21.45 g/cm^3. Neptunium 20.2 g/cm^3. Plutonium 19.84 g/cm^3. Tungsten 19.35 g/cm^3. Gold 19.32 g/cm^3. Uranium 18.95 g/cm^3. What has the highest density in the Universe? […]

Is True North changing? True north is a fixed point on the globe. However, its position is constantly changing, and soon magnetic north and true north will align. This alignment won’t last for long: the British Geological Survey predicts that magnetic north will begin to shift slightly eastwards here in the UK over the coming […]

Which type of voltage is induced dynamically? Explanation: Whenever a conductor cuts magnetic flux, dynamically induced e.m.f. is produced in it according to Faraday’s Laws of Electromagnetic Induction. This e.m.f. causes a current to flow if the conductor circuit is closed. A conductor or conductors which can so move as to cut the flux. What […]

What is an example of a stable community? A stable community is one in which the size of the populations of all species remain relatively constant over time. In the example above the amount of grass, and the numbers of rabbits and foxes all remain relatively constant. The different populations are living in a healthy […]

Which one of the following is the example of solid? Synthetic gems are the examples of solid solid system. Smoke is solid in gas, coke is gas in liquid and pumice stone is gas in solid. What is a solid mixture? Solid Mixtures They can have pure elements or a variety of compounds inside. When […]

Do floating eggs work? If the egg sinks or stays at the bottom, it is still fresh. An older egg will either stand on its end or float. The float test works because air builds up inside the egg as it ages, and this increases its buoyancy. However, an egg that floats may still be […]

What weather do occluded fronts bring? An Occluded Front forms when a warm air mass gets caught between two cold air masses. The temperature drops as the warm air mass is occluded, or “cut off,” from the ground and pushed upward. Such fronts can bring strong winds and heavy precipitation. Occluded fronts usually form around […]

Does Israel have neutron bombs? Israel is also reported to possess a wide range of different systems, including neutron bombs, tactical nuclear weapons, and suitcase nukes. Israel is believed to manufacture its nuclear weapons at the Negev Nuclear Research Center. Does Israel have nuclear capability? Estimates of Israel’s stockpile range between 80 and 400 nuclear […]