Category: Physics

What can exposure to high noise levels cause? Exposure to high levels of noise can cause permanent hearing loss. Neither surgery nor a hearing aid can help correct this type of hearing loss. Short term exposure to loud noise can also cause a temporary change in hearing (your ears may feel stuffed up) or a […]

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 […]

Who can beat Dark Phoenix? 3 Odin. Odin’s sword alone could destroy the universe as we know it. So, of course, he could beat the Phoenix in a fight. Literally a god, Odin makes enormous mistakes but does tend to rule much more benevolently and with a better head on his shoulders than the raw […]

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? 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? and for building mass you need to lift heavy weighted dumbbell with lower rep range (10–15 counts). By lifting 5 kg for 30 count sure is difficult but it does not build the mass… it shapes the muscle and makes the biceps ripped and burns fat. so doing that is […]

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 […]

How do we use infrared waves in everyday life? Infrared (IR) light is used by electrical heaters, cookers for cooking food, short-range communications like remote controls, optical fibres, security systems and thermal imaging cameras which detect people in the dark. The heating effect of IR can cause burns to the skin. Can deer see IR […]

Is Mid-Atlantic Ridge a normal fault? 2 Study Area: The Northern Mid‐Atlantic Ridge (12°N–36°N) The MAR is a slow spreading mid‐ocean ridge (2.5 cm/yr full rate) characterized by a ∼10–20 km wide axial valley bordered by normal faults and segmented by transform and nontransform offsets [e.g., Searle and Laughton, 1977; Spencer et al., 1997]. At […]

What are the difference between the three types of stress compression tension and shear? Compression is the most common stress at convergent plate boundaries. Rocks that are pulled apart are under tension. Tension is the major type of stress at divergent plate boundaries. When forces are parallel but moving in opposite directions, the stress is […]