What did oil drop experiment prove? Explanation: Millikan’s oil drop experiment proved that electric charge is quantized. This was the big result of the oil drop experiment. That he could also determine the charge of the electron was a secondary benefit. What oil did Millikan use? vacuum pump oil What oil was used in Millikan […]
What are the 4 major crime labs?
What are the 4 major crime labs? These four major federal crime labs help investigate and enforce criminal laws beyond the jurisdictional boundaries of state and local forces: FBI (Federal Bureau of Investigation), DEA (Drug Enforcement Agency), Bureau of Alcohol, Tobacco, Firearms and Explosives, and U.S. Postal Inspection Service. How does a bullet fly through […]
What do you understand by angle of shear?
What do you understand by angle of shear? The angle between the planes of maximum shear, which is bisected by the axis of greatest compression. What is shear angle in cutting tool? In orthogonal cutting, shear angle is the angle between (a) shear plane and the cutting velocity. (b) shear plane and the rake plane. […]
Why is American food so unhealthy?
How fast does a cup of tea cool?
How fast does a cup of tea cool? Pour the water between vessels (e.g., kettle – pitcher – cup) which assists in the water in cooling down more quickly than waiting for the water to reach temperature as described below. The temperature will change between 5-10˚C with each pour….Water temperature for tea: cooling your water […]
What is the best description of a sound wave when the pitch of the sound is very high?
Why do mirrors in reflecting telescopes need parabolic mirrors?
Why do mirrors in reflecting telescopes need parabolic mirrors? Reflecting telescopes have many advantages over refracting telescopes. Mirrors don’t cause chromatic aberration and they are easier and cheaper to build large. Different reflectors use different shapes of mirrors. Parabolic mirrors will focus all incoming light rays to a single point. Which is better reflector or […]
Is height related to weight?
Is height related to weight? The first rationale is that BMI is strongly correlated with weight, but is independent of height. The second rationale is that BMI correctly captures the relationship between weight and height, which implies that the slope of log weight regressed on log height is 2. Does your weight depend on your […]
What are basic life skills?
What are basic life skills? Life skills are defined as “a group of psychosocial competencies and interpersonal skills that help people make informed decisions, solve problems, think critically and creatively, communicate effectively, build healthy relationships, empathize with others, and cope with and manage their lives in a healthy and … What are the main life […]
Who survived the Devonian extinction?
Who survived the Devonian extinction? Although freshwater fish were barely affected, marine animals were much more so. Placoderms, for example, did not survive, acanthodians were decimated, and almost all agnathans vanished. Numerous brachiopods became extinct, conodonts all but disappeared, and only one family of trilobites survived. When did the Devonian period start and end? 419.2 […]