Is work done when you lift an object? The force you are exerting is equal in magnitude and opposite in direction to the force of gravity. As you are lifting the object you are doing work on the object. The work W done on an object by a constant force is defined as W = […]
How do you explain combustion?
How do you explain combustion? Combustion is a chemical process in which a substance reacts rapidly with oxygen and gives off heat. The original substance is called the fuel, and the source of oxygen is called the oxidizer. The fuel can be a solid, liquid, or gas, although for airplane propulsion the fuel is usually […]
Is loudness related to frequency?
Is loudness related to frequency? Now when talking about sound waves the sound level of a noise (loudness), it is proportional to the intensity of the source. The loudness of a sound does not seem to depend on frequency. But according to the equation above, intensity DOES depend on frequency. How loud is 1000hz? Using […]
Which are characteristics of a ray when it hits a boundary and refracts but not?
Which are characteristics of a ray when it hits a boundary and refracts but not? F. Only these two options are characteristics of a ray when it is refracted, but not when it is reflected. In fact: Reflection occurs when a ray hits the interface between two mediums and bounces off back. When it is […]
What is the point of neutrons?
What is the point of neutrons? Neutrons bind with protons and one another in the nucleus via the nuclear force, effectively moderating the repulsive forces between the protons and stabilizing the nucleus. How quickly does a neutron bomb kill? two days Is there a doomsday bomb? In a 2-part episode of the TV show The […]
What are the extreme conditions of space?
What are the extreme conditions of space? Extreme conditions in the ISS space environment include exposure to extreme heat and cold cycling, ultra-vacuum, atomic oxygen, and high energy radiation. What organisms can live in extreme conditions? Most extremophiles are microorganisms (and a high proportion of these are archaea), but this group also includes eukaryotes such […]
What are the different type of measurement?
What are the different type of measurement? The four scales of measurement Nominal scale of measurement. The nominal scale of measurement defines the identity property of data. Ordinal scale of measurement. The ordinal scale defines data that is placed in a specific order. Interval scale of measurement. Ratio scale of measurement. What is the difference […]
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What is an example of Kinesthesia?
What is an example of Kinesthesia? Through your sense of kinesthesis, you can tell where different parts of your body are located even if your eyes are closed or you are standing in a dark room. For example, when you are riding a bicycle, receptors in your arms and legs send information to the brain […]
Does a real diamond sparkle blue?
Does a real diamond sparkle blue? A fake diamond will have rainbow colors that you can see inside the diamond. “People have a misconception that diamonds sparkle like a rainbow, but they don’t,” Hirsch said. “They do sparkle, but it’s more of a gray color. What color do real diamonds shine? The way that diamonds […]