Category: Physics

What is the coldest liquid on Earth? Liquid helium Is liquid nitrogen or liquid oxygen colder? Liquid nitrogen has a lower boiling point at −196 °C (77 K) than oxygen’s −183 °C (90 K), and vessels containing liquid nitrogen can condense oxygen from air: when most of the nitrogen has evaporated from such a vessel, […]

What element is in Group 5 Period 7? Group 5 (by IUPAC style) is a group of elements in the periodic table. Group 5 contains vanadium (V), niobium (Nb), tantalum (Ta) and dubnium (Db). This group lies in the d-block of the periodic table. What are the middle ten groups on the table called? Additionally, […]

How is the Clean Water Act enforced? In the case of the Clean Water Act, the federal government relies on state agencies to enforce many of the key provisions of the law, including the National Pollutant Discharge Elimination System (NPDES), a system by which polluters are issued permits to emit specific quantities of pollution into […]

Why does the ray of light passing through the optical Centre of a lens not get any deviation? The ray passing through optical center does no deviate because the curvature of the Lens at the incident and exit point are exactly opposite so the deviation at the first point is cancelled at the other point. […]

Is 0.1 mm the same as 1mm? Please provide values below to convert millimeter [mm] to micrometer [µm], or vice versa….Millimeter to Micrometer Conversion Table. Millimeter [mm] Micrometer [µm] 0.01 mm 10 µm 0.1 mm 100 µm 1 mm 1000 µm 2 mm 2000 µm What is the ratio of 1mm to 1m? Thus, we […]

Is known as the way light reflects off a mineral? Luster describes the reflection of light off a mineral’s surface. Mineralogists have special terms to describe luster. One simple way to classify luster is based on whether the mineral is metallic or non-metallic. How can you identify a minerals color? You can identify a mineral […]

How do you find the error in a English sentence? Key Identifying Sentence Errors Strategies Always read the entire sentence. When looking for the error, examine each choice individually. Check verbs and pronouns first, since they’re the most likely to include errors. When an answer choice contains more than one type of word, check both. […]

What is it called when two waves interact with the crests of one aligning with the troughs of the other? When two waves meet in such a way that their crests line up together, then it’s called constructive interference. The resulting wave has a higher amplitude. In destructive interference, the crest of one wave meets […]

What is a dumb question? Dumb questions are simple questions that probe the obvious, and simultaneously challenge and direct our thinking. Dumb questions are not accusatory or argumentative statements in disguise. Nor are they formulated with preconceived answers in mind. Rather, they are probing yet open. What is the world’s stupidest question? The 30 Dumbest […]

Which chemical is used in car battery? sulfuric acid Which chemical is used in cell? Ammonium chloride and manganese dioxide, in the form of a paste, is used as the electrolyte. Apart from this, standard dry cell comprises a zinc anode, usually in the form of a cylinder, with a carbon cathode in the form […]