What is a formula of stress? The stress equation is: σ = F/A. F denotes the force acting on a body and A denotes the area. Units of stress are the same as units of pressure – Pascals (symbol: Pa) or Newtons per squared meter. Positive stress means that the object is in tension – […]
What happens when a ray of light strikes the surface of separation between the two media at right angle?
What happens when a ray of light strikes the surface of separation between the two media at right angle? What happens when a ray of light strikes the surface of separation between the two media at right angle? When light enters the boundary of two surfaces at right it passes normally without deviation. This is […]
What constellations are visible in both hemispheres?
What constellations are visible in both hemispheres? Constellations such as Orion may be seen in both hemispheres, depending on your distance from the equator and the time of year. If you can’t see the entire constellation, it’s likely too close to the horizon line and are too far north or south for complete viewing. Are […]
What are 5 PPE?
What are 5 PPE? PPE includes gloves, gowns, laboratory coats, face shields or masks, eye protection, resuscitation masks, and other protective gear such as hats and booties. What is PPE and examples? Personal protective equipment, commonly referred to as “PPE”, is equipment worn to minimize exposure to a variety of hazards. Examples of PPE include […]
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 […]
At what altitude is 0 gravity?
At what altitude is 0 gravity? Near the surface of the Earth (sea level), gravity decreases with height such that linear extrapolation would give zero gravity at a height of one half of the Earth’s radius – (9.8 m·s−2 per 3,200 km.) Which force is always attractive in nature? gravitational force Why gravity is not […]
What did the Tin Man get in the Wizard of Oz?
What were Egyptian sculptures for?
What were Egyptian sculptures for? The Egyptians used sculpture in a number of ways. They created statues of their gods, kings and queens, but they also created what is called ‘reliefs’. Ancient Egyptians made a lot of sculptures to include in the burial tombs of their pharaohs. Why were sculptures or painted relief sculptures buried […]
What do you say to someone who wants to be your friend?
What does Star Wars and Harry Potter have in common?
What does Star Wars and Harry Potter have in common? While the previous storyline might apply to a large number of sagas, Harry Potter and Luke Skywalker unexpectedly have other things in common: both are orphans and both have been brought up by their aunt and uncle (even if in Luke’s case, they are more […]