Which type of lever is scissors? Other examples of first class levers are pliers, scissors, a crow bar, a claw hammer, a see-saw and a weighing balance. In summary, in a first class lever the effort (force) moves over a large distance to move the load a smaller distance, and the fulcrum is between the […]
How old is the Grand Canyon in 2020?
How old is the Grand Canyon in 2020? Well, the Grand Canyon is a hodgepodge of old and new sections, as the researchers found in a recent study published in the Nature Geoscience journal. Some scientists believe that the Grand Canyon is 70 million years old. Can you get in trouble for stealing a rock? […]
Is too much walking bad for joints?
Is too much walking bad for joints? A new study shows that middle-aged men and women who engage in high levels of physical activity — at home and at work as well as at the gym — may be unwittingly damaging their knees and increasing their risk for osteoarthritis. The study involved men and women […]
What are three signs of substance use?
What are three signs of substance use? Criteria for Substance Use Disorders Taking the substance in larger amounts or for longer than you’re meant to. Wanting to cut down or stop using the substance but not managing to. Spending a lot of time getting, using, or recovering from use of the substance. Cravings and urges […]
Which achievement is credited to Aristotle?
Which achievement is credited to Aristotle? Aristotle was one of the greatest philosophers who ever lived and the first genuine scientist in history. He made pioneering contributions to all fields of philosophy and science, he invented the field of formal logic, and he identified the various scientific disciplines and explored their relationships to each other. […]
How many meteors hit Earth daily?
How many meteors hit Earth daily? 25 million meteoroids How many meteors hit Earth every year? 500 meteorites Has anyone ever got hit by a meteor? On November 30, 1954, an Alabama woman, Ann Hodges, was struck by a meteorite while taking a nap. The meteorite crashed through the roof of her home in Sylacauga, […]
Has anyone hit a homerun in every ballpark?
Has anyone hit a homerun in every ballpark? When this question was posed early in 2019, I had given the answer that Mark Reynolds and Curtis Granderson had homered in every MLB ballpark. While the Toddfather is only 32nd on the active career HR list, he has nonetheless managed to homer in every current ballpark […]
What kind of daughter cells does meiosis produce?
What kind of daughter cells does meiosis produce? The process results in four daughter cells that are haploid, which means they contain half the number of chromosomes of the diploid parent cell. Meiosis has both similarities to and differences from mitosis, which is a cell division process in which a parent cell produces two identical […]
What is the minimum size power conductors that are permitted to be run in parallel?
What is the minimum size power conductors that are permitted to be run in parallel? Parallel conductor installations are covered in NEC 310.10(H) and are permitted for each phase, polarity, neutral, or grounded conductor in sizes 1/0 AWG and larger. Joining conductors in parallel is like having two or more smaller conductors connected at each […]