Category: Physics

Is Dove soap made with lye? Dove. It is true that the words “lye” or “sodium hydroxide” do not appear on the Dove ingredient label. But, the first ingredients listed were sodium tallowate, sodium cocoate, and sodium palm kernelate. Yes, Dove is made with lye! What can you use instead of lye in soap? The […]

How do you find the number of moles? The unit is denoted by mol. The formula for the number of moles formula is expressed as. Given. Number of moles formula is. Number of moles = Mass of substance / Mass of one mole. Number of moles = 95 / 86.94. How many moles of copper […]

What is creating the solution in the design cycle? Creating the Solution: Outline a plan; including time and resources. Create your solution or project while following your timeline. Your process should be documented in your journal and any changes to the final creation should be justified. Evaluating: Outline how successful your solution was, including necessary […]

Is it safe to eat iceberg ice? A: Iceberg ice is completely safe to consume. Q: Are icebergs salty? A: No. Icebergs are created from pure, fresh water and snow. What will happen if icebergs do not float? Unlike plants, animals can move so they would move as far as possible or be trapped and […]

What are interference colors? Definition. Liquitex® Interference Colours are colourless, transparent paints made from titanium coated mica flakes rather than traditional pigments. They are also known as “Opalescent Colours.” They change their colour (exhibiting a metallic look and colour shift) depending upon the viewing angle. What causes interference colors? Interference Colors Produced by Polychromatic Light […]

What electromagnetic waves can be used for communication? Radio waves are used for communication such as television and radio. Radio waves are transmitted easily through air. They do not cause damage if absorbed by the human body, and they can be reflected to change their direction. These properties make them ideal for communications. Which wave […]

What is the difference between membrane potential and resting potential? For a cell’s membrane potential, the reference point is the outside of the cell. Because there is a potential difference across the cell membrane, the membrane is said to be polarized. If the membrane potential becomes more positive than it is at the resting potential, […]

When galaxies are moving away from us what light color do we see? Visible light is a spectrum of colors, which is clear to anyone who has looked at a rainbow. When an object moves away from us, the light is shifted to the red end of the spectrum, as its wavelengths get longer. If […]

Are magnets bad for automatic watches? Analog quartz watches utilize the power of magnetic force in order to drive the step motors to move the rotors. As a result, watches may stop or fail to keep correct time. But magnetism remaining inside of the watch does not affect its accuracy, so keep it away from […]

What forces act on a person jumping? Part II: The Jump Whether you are standing or jumping, the only external forces acting on your body are the normal force from the ground and gravity. How can you jump? Raising your center of mass into the air seems like it would require gravity to diminish or […]