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?
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?
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. […]
Why is steam so powerful?
What countries use coal for electricity?
What countries use coal for electricity? Top coal-fired power generating countries China. Producing 4,360.9TWh of power from coal-fired facilities, China occupies the first place in the list. US. The US continues to generate a significant amount of its electricity from coal. India. Japan. South Korea. How much energy is in 1kg of coal? 1kg of […]
How do you find the error in a English sentence?
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 happens if 2 objects have the same speed but different velocities?
What happens if 2 objects have the same speed but different velocities? Objects have the same velocity only if they are moving at the same speed and in the same direction. They represent objects that have different velocities only because they are moving in different directions. A and C represent objects that have different velocities […]
What is it called when two waves interact with the crests of one aligning with the troughs of the other?
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 are the two most important properties of stars?
What are the two most important properties of stars? A star can be defined by five basic characteristics: brightness, color, surface temperature, size and mass. Brightness. Two characteristics define brightness: luminosity and magnitude. Color. A star’s color depends on its surface temperature. Surface Temperature. Size. Mass. What is the most important characteristic of a star […]
What is a dumb question?
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 […]