Category: Physics

How much electricity does 1200 watts use? Appliance Electricity Usage Appliance Typical Consumption Per Hour Cost Per Hour (at 10 cents per kilowatt-hour) Space heater 1,500 watts 15 cents Hair dryer 1,200 watts 12 cents Electric range burner 1,000 watts 10 cents Refrigerator 1,000 watts 10 cents How much power does a 700 watt microwave […]

What are 5 examples of non-renewable resources? Nonrenewable energy resources include coal, natural gas, oil, and nuclear energy. Once these resources are used up, they cannot be replaced, which is a major problem for humanity as we are currently dependent on them to supply most of our energy needs. What are the examples of renewable […]

How do astronomers identify stars? Thus, astronomers can identify what kinds of stuff are in stars from the lines they find in the star’s spectrum. This type of study is called spectroscopy. The science of spectroscopy is quite sophisticated. Why do stars wobble? We all know that the chains of gravity shackle a planet to […]

What are 5 facts about the Ring of Fire? 7 Hot Facts About the Pacific Ring of Fire It’s an International Sensation. Plate Tectonics Make the Whole Thing Possible. It’s Home to World’s Deepest Ocean Trench. It’s Littered With Volcanoes and Prone to Earthquakes. Its Quakes Aren’t Always Interconnected. It’s a Great Producer of Geothermal […]

Is water displacement dependent on mass? The concept of Archimedes’ principle is that an object immersed in a fluid is buoyed up by a force equal to the weight of the fluid displaced by the object. The mass of the displaced fluid can be expressed in terms of the density and its volume, m = […]

Can humans see light speed? Yes. We can see the objects moving at speed of light. But we do not have that technology yet and we do not know if anything with mass can travel at speed of light. One can see objects if photons can reach his eyes even if he is travelling at […]

What is the difference between the two igneous rocks? The two main categories of igneous rocks are extrusive and intrusive. Extrusive rocks are formed on the surface of the Earth from lava, which is magma that has emerged from underground. Intrusive rocks are formed from magma that cools and solidifies within the crust of the […]

Is Sugar an inorganic compound? Explanation: Yes sugars are organic compounds, as organic compounds are defined as Carbon containing compounds with hydrogen attached most of the time. These organic compounds can be synthesized in living beings. they are even used by living being as a source of energy. Is glucose an inorganic compound? Glucose is […]

Why is o not stable? One oxygen atom is unstable since it has only 6 electrons in the outermost shell. For an atom to be stable it needs 8 electrons. So, for the oxygen atom to be stable it requires two more electrons in the valence shell. Why does O2 exist but not S2? In […]

Is it better to wear a hat in the sun? Wearing a hat outdoors is also great way to protect your hair, eyes, and skin from the sun’s ultraviolet (UV) rays. While you still need to slather your skin with sunscreen that protects against both UVA and UVB rays, a hat can help give added […]