Expert insights and detailed technical documentation about economics.
Score: 5/5 (5 votes) The force of friction depends on the area of contact between the two surfaces. ... As the area of contact is less in the case of rolling than in the case of sliding, rolling friction is less than the sliding friction.Why is rolling friction the weakest?The object has a harder ti...
Score: 4.9/5 (42 votes) Cells contain power centers called mitochondria that also carry their own sets of DNA—and in nearly all known animals, mitochondrial DNA is inherited exclusively from the mother.Is mitochondrial DNA inherited from mother only?Our cells' mitochondria provide the energy to...
Score: 4.2/5 (27 votes) Phenylephrine, an ingredient in pediatric cough and cold preparations, is considered safe. While excretion into breast milk is unknown, it is unlikely to be excreted into breast milk in large quantities due to its poor bioavailability.Why is phenylephrine bad for breastfeedin...
Score: 5/5 (45 votes) Certain types of lectin may bind with the walls of your digestive system which can lead to serious problems. Eating one particular lectin, phytohemagglutinin, can lead to severe abdominal pain, vomiting, and diarrhea. Some proponents of lectin-free diets claim that lectins can ...
Score: 4.5/5 (9 votes) The word silk comes from Old English: sioloc, from Ancient Greek: σηρικός, romanized: sērikós, "silken", ultimately from the Chinese word "sī" and other Asian sources—compare Mandarin sī "silk", Manchurian sirghe, Mongolian sirkek.What is the full meaning of silk?1 : a fine co...
Score: 4.2/5 (27 votes) Do not use the crate for punishment, or else your dog will come to dislike it rather than view it as its den. Most dogs regard their crate as a place of refuge and will retreat to it when they are tired or stressed. Limit the amount of time your dog remains actually shut in t...
Score: 4.9/5 (67 votes) Polish and Czech : from the personal name Radek, a pet form of any of various Slavic personal names formed with rad- 'glad' as the first element. The most common such names are Radoslav(Polish Radosław), in which the second element means 'glory', and Radom...
Score: 4.9/5 (25 votes) In the majority of sexually reproducing organisms the male and female are morphologically distinct( heterogametes). In such organisms, the male gametes are called microgametes, or spermatozoa, and female gametes termed macrogametes or ova.What are male gametes called?Gametes ...
Score: 4.1/5 (36 votes) Female squirrels will typically create an average of four or five nest sites within the geographic range of their primary nest throughout the year. If the mother feels one nest is no longer safe, she will move to an alternative nesting site with her young.Do squirrels build m...
Score: 4.1/5 (3 votes) Each person has two Rh factors in their genetics, one from each parent. The only way for someone to have a negative blood type is for both parents to have at least one negative factor. For example, if someone's Rh factors are both positive, it is not possible for his or h...
