What is the difference between mass and inertial mass? Gravitational mass is measured by comparing the force of gravity of an unknown mass to the force of gravity of a known mass. This is typically done with some sort of balance scale. Inertial mass is found by applying a known force to an unknown mass, […]
Which of the following keys move the insertion point to the end of data in a cell?
What is the wavelength of 20 Hz?
What does trainers hanging from wires mean?
What does trainers hanging from wires mean? Mystery surrounds the presence of shoes and trainers over power and telephone lines across various locations in Bury St Edmunds. One common held belief is that shoes over power lines indicate drug dealing territories. While others believe the act of dangling shoes is purely trivial and is done […]
Which atom can have more than 8 valence electrons?
Which atom can have more than 8 valence electrons? Sulfur, phosphorus, silicon, and chlorine are common examples of elements that form an expanded octet. Phosphorus pentachloride (PCl5) and sulfur hexafluoride (SF6) are examples of molecules that deviate from the octet rule by having more than 8 electrons around the central atom. Why can Xenon have […]
What happens when lightning strikes near you?
What happens when lightning strikes near you? Anyone outside near a lightning strike is potentially a victim of ground current. Typically, the lightning enters the body at the contact point closest to the lightning strike, travels through the cardiovascular and/or nervous systems, and exits the body at the contact point farthest from the lightning. What […]
What is the function of electric generator?
What is the function of electric generator? Electric generator, also called dynamo, any machine that converts mechanical energy to electricity for transmission and distribution over power lines to domestic, commercial, and industrial customers. Generators also produce the electrical power required for automobiles, aircraft, ships, and trains. How many appliances can run on a 20 amp […]
What is the key organ of the circulatory system?
What is the key organ of the circulatory system? The heart is the key organ in the circulatory system. As a hollow, muscular pump, its main function is to propel blood throughout the body. What are the three major parts of the circulatory system? An Introduction to the Cardiovascular System This system has three main […]
Why is a black body a perfect absorber and emitter of heat?
Why is a black body a perfect absorber and emitter of heat? A blackbody allows all incident radiation to pass into it (no reflected energy) and internally absorbs all the incident radiation (no energy transmitted through the body). This is true for radiation of all wavelengths and for all angles of incidence. Hence the blackbody […]