When you jump from an elevated position you usually bend? When you jump from an elevated position you usually bend your knees upon reaching the ground. By doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing. When a rifle is fired the bullet moves forward […]
How long have seatbelts been mandatory?
How long have seatbelts been mandatory? 1968 Do cops wear seatbelts? While 86 percent of Americans now wear seat belts, an upcoming study that will be published by California’s Commission on Peace Officer Standards and Training estimates that roughly half of law enforcement officers don’t wear them. What year car doesn’t need seat belts? 1966 […]
Why animals can reproduce in large number?
Why animals can reproduce in large number? Animals have limited amounts of energy they can use for reproduction. Animals with high fecundity spend their energy in the production of many offspring that do not require much care. Alternatively, animals with low fecundity produce fewer offspring, and have more energy to care for those offspring. What […]
What is an outlier on a scatter diagram?
What is an outlier on a scatter diagram? An outlier is defined as a data point that emanates from a different model than do the rest of the data. If the outlier is omitted from the fitting process, then the resulting fit will be excellent almost everywhere (for all points except the outlying point). What […]
Which region has many mountain ranges separated by desert basins?
Which region has many mountain ranges separated by desert basins? Great Basin physiographic section The Basin and Range region is the product of geological forces stretching the earth’s crust, creating many north–south trending mountain ranges. These ranges are separated by flat valleys or basins. These hundreds of ranges make Nevada the most mountainous state in […]
Can we prove axioms?
Can we prove axioms? Unfortunately you can’t prove something using nothing. You need at least a few building blocks to start with, and these are called Axioms. Mathematicians assume that axioms are true without being able to prove them. If there are too few axioms, you can prove very little and mathematics would not be […]
How much energy is released in nuclear fission of U235?
What is grashof condition?
What is grashof condition? The Grashof condition for a four-bar linkage states: If the sum of the shortest and longest link of a planar quadrilateral linkage is less than or equal to the sum of the remaining two links, then the shortest link can rotate fully with respect to a neighboring link. What is K […]