When was heliocentric accepted? Jan What was Ptolemy theory? The Ptolemaic system was a geocentric system that postulated that the apparently irregular paths of the Sun, Moon, and planets were actually a combination of several regular circular motions seen in perspective from a stationary Earth. Who was the first White Pharaoh? Ptolemy I Soter, (born […]
Do roller coasters just use gravity?
Do roller coasters just use gravity? A roller coaster is a machine that uses gravity and inertia to send a train of cars along a winding track. The combination of gravity and inertia, along with g-forces and centripetal acceleration give the body certain sensations as the coaster moves up, down, and around the track. How […]
How many protons are in nitrogen 3?
How many protons are in nitrogen 3? 7 protons How many neutrons are in nitrogen 3? Nitrogen typically has 7 neutrons. That means the mass number is 7 protons + 7 neutrons=14. How many neutrons are in nitrogen? 7 How is nitrogen trichloride formed? Nitrogen trichloride can form in small amounts when public water supplies […]
Why was England most successful in colonizing America?
Why was England most successful in colonizing America? The English that settled the middle colonies of New York and Pennsylvania found good farmland that was great for growing food that could be sold in Europe. Finally, the English that colonized the southern colonies found that area was good for growing cash crops like tobacco. What […]
How fast do planes fly in mph?
How fast do planes fly in mph? The typical cruising airspeed for a long-distance commercial passenger aircraft is approximately 880–926 km/h (475–500 kn; 547–575 mph). Was the mosquito faster than the Spitfire? During its trials on 16 January 1941, W4050 outpaced a Spitfire at 6,000 ft (1,800 m). The original estimates were that as the […]
Will 5kg dumbbells build muscle?
What is a muscle moment arm?
What is a muscle moment arm? The moment arm of a muscle force is defined by the perpendicular distance between the muscle’s line of action and the instantaneous centre of rotation of the joint in which it spans, and represents the capacity of that muscle to exert a joint torque (Pandy, 1999). Does a longer […]
Who can beat Dark Phoenix?
Which installation is not covered by the NEC?
Which installation is not covered by the NEC? The NEC does not cover electrical installations in ships, water- craft, railway rolling stock, aircraft, or automotive vehicles. What is the purpose of the NEC? The NEC (the National Fire Protection Association’s NFPA 70) is a widely-adopted model code for the installation of electrical components and systems. […]
Why do we use resistors?
Why do we use resistors? A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses. What causes resistors to burn? Blowing Up a […]