Category: Physics

What are the 5 variables? There are six common variable types: DEPENDENT VARIABLES. INDEPENDENT VARIABLES. INTERVENING VARIABLES. MODERATOR VARIABLES. CONTROL VARIABLES. EXTRANEOUS VARIABLES. How many independent variables should an investigation have? one independent variable What’s the dependent variable in science? The dependent variable is the variable that is being measured or tested in an experiment. […]

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 […]

How does a roller coaster go up a hill? A roller coaster does not have an engine to generate energy. The climb up the first hill is accomplished by a lift or cable that pulls the train up. The higher the hill the coaster is coming down, the more kinetic energy is available to push […]

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 […]

What is the function of sodium ion in human body? Sodium is both an electrolyte and mineral. It helps keep the water (the amount of fluid inside and outside the body’s cells) and electrolyte balance of the body. Sodium is also important in how nerves and muscles work. Most of the sodium in the body […]

What is the difference between SAR and radar? SAR uses the motion of the radar antenna over a target region to provide finer spatial resolution than conventional beam-scanning radars. Additionally, SAR has the property of having larger apertures for more distant objects, allowing consistent spatial resolution over a range of viewing distances. What is the […]

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 […]

How do you calculate isothermal compression? It is also worth noting that for ideal gases, if the temperature is held constant, the internal energy of the system also is constant, and so ΔU = 0. Since the First Law of Thermodynamics states that ΔU = Q + W (IUPAC convention), it follows that Q = […]

Why is graphite dangerous? Graphite is a form of pure carbon. It is not edible, but not chemically dangerous. Graphite can be made to be more dangerous than Pb depending on ingenuity. For instance if you powder graphite and force a person to breath the powder until they choke, it is more dangerous that a […]

Is normal force a centripetal force? The normal force and a component of the weight point toward the center of the loop (the component perpendicular to the loop), so they get to be the centripetal force. How is centripetal force calculated? Centripetal force is measured in Newtons and is calculated as the mass (in kg), […]