What is the difference between the bell and the diaphragm of a stethoscope? The bell effect is created by light pressure on the stethoscope. Firm pressure makes the stethoscope behave like it should with a diaphragm. The difference between the diaphragm and the bell is that the bell allows low frequency sounds, which permits hearing […]
What is the hottest rainforest on earth?
What is the hottest rainforest on earth? Tropical rainforests often have from 160 to 400 inches of rain a year. But they aren’t the wettest or even the hottest places on Earth. (The wettest is Mount Waialeale, in Hawaii, USA, and the hottest is Libya in North Africa.) What is the environment like in a […]
What type of bond is potassium sulfur?
What type of bond is potassium sulfur? ionic bond What is the bond between potassium and sulfur? The difference in charge between the two 1+ potassium ions and the 2- sulfur ion allows electrostatic attraction between the sulfur ions and potassium ions. This is an ionic bond and is the basis of the ionic compound […]
Which type of orbital is not allowed?
Which type of orbital is not allowed? The answer is d) 2d. Without going into too much detail, the 2d orbitals cannot exist because they are not allowed solutions to the Schrodinger equation. Simply put, the second energy shell, designated by a principal quantum number equal to 2, or n=2 , can only hold s […]
What happens if you put too many stamps on an envelope?
What is radius of curvature in light?
What is radius of curvature in light? Radius of curvature (ROC) has specific meaning and sign convention in optical design. A spherical lens or mirror surface has a center of curvature located either along or decentered from the system local optical axis. The distance from the vertex to the center of curvature is the radius […]
Who is known as the father of modern astronautics?
Who is known as the father of modern astronautics? For his ideas, careful research, and great vision, Tsiolkovsky has been called the Father of Modern Astronautics. Early in the 20th century, an American, Robert H. Goddard (1882-1945), conducted a variety of practical experiments in rocketry. When did Russia put a man in space? A Is […]
How does a roller coaster go up a hill?
What are the 4 types of plate boundary?
What are the 4 types of plate boundary? Plate Boundaries and Hotspot Demonstration Divergent Plate Boundary. Volcanic eruptions and shallow earthquakes are common where plates rip apart. Convergent Plate Boundary. Transform Plate Boundary. Hotspot. What are the 5 plate boundaries? What are the major plate tectonic boundaries? Divergent: extensional; the plates move apart. Spreading ridges, […]
How do you calculate sound pressure?
How do you calculate sound pressure? Sound pressure level (SPL) calculator – formula & step by step calculation to measure the logarithmic RMS value of the sound or acoustic pressure caused by the sound wave relative to a reference value in decibels. SPL (dB) = 10 log10(p2/po2). How do you convert pressure to dB? Sound […]