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Is momentum equal to inertia?
Is momentum equal to inertia? So, inertia describes an object’s resistance to change in motion (or lack of motion), and momentum describes how much motion it has. Pop quiz answer: Momentum is your force or speed of movement, but inertia is what keeps you going. Is inertia directly proportional to mass? Inertia is a property […]
Why does a paperclip sink in soapy water?
Why does a paperclip sink in soapy water? When you initially drop the paper clip into the bowl of water, it sinks, as the paperclip is too dense. Adding the dish soap breaks the bonds between the water molecules, thus breaking the surface tension and causing the paper clip to sink. Does a paperclip sink? […]
What is the average frequency of a radio wave?
What is the average frequency of a radio wave? Radio waves are a type of electromagnetic (EM) radiation with wavelengths in the electromagnetic spectrum longer than infrared light. They have have frequencies from 300 GHz to as low as 3 kHz, and corresponding wavelengths from 1 millimeter to 100 kilometers. What happens to the wavelength […]
What is the number of moles of glucose in 0.5 l of a 0.4 M solution?
Why do plates move apart?
Why do plates move apart? The plates can be thought of like pieces of a cracked shell that rest on the hot, molten rock of Earth’s mantle and fit snugly against one another. The heat from radioactive processes within the planet’s interior causes the plates to move, sometimes toward and sometimes away from each other. […]
What happens to a container of gas when the pressure is increased?
What happens when you mix sulfur and vinegar?
What happens when you mix sulfur and vinegar? hydrogen sulphide, formula H2S. This compund forms by a chemical reaction between the vinegar (an acid) and small amounts of metal sulphides (= compounds of a metal and sulphur). It has the well-known rotten-egg odour. These metal sulphides may be present in the ashes or may be […]
Does heat or air kill germs?
Does heat or air kill germs? Air temperature is key for bacteria. In general, cold air kills germs while warm air incubates them. What do hospitals use to sanitize the air? Ethanol and ammonia are commonly found in disinfectant agents, and formaldehyde in laundry detergents. As these products are used in such large quantities within […]
Can cause a change in motion?
Can cause a change in motion? A force is a push or pull that can cause an object to move, stop, or change speed or direction. 3. The greater the force, the greater the change in motion. Gravity (the earth’s pulling force) and friction (the force between two surfaces) are common forces that work against […]