Category: Physics

Which is the most reactive in Group 1? francium Why does boiling point increase down Group 7? The boiling and melting points increase as you go down the group. This is because the strength of the Van Der Waals forces (or induced dipole-dipole interactions) increases since the atoms have more electrons as you descend the […]

What is the principle of inertia? Law of inertia, also called Newton’s first law, postulate in physics that, if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by […]

How do you tell if a math problem is a function? Determining whether a relation is a function on a graph is relatively easy by using the vertical line test. If a vertical line crosses the relation on the graph only once in all locations, the relation is a function. However, if a vertical line […]

What does a 50 yard parallax mean? In a rifle scope, parallax means if the scope is held fixed on a target, and you move you head, you will see the crosshairs move on the target. It isn’t possible to be parallax-free at all ranges. Scopes are adjusted to be parallax free at one range […]

What are the 5 levels of evidence? Johns Hopkins Nursing EBP: Levels of Evidence Level I. Experimental study, randomized controlled trial (RCT) Level II. Quasi-experimental Study. Level III. Non-experimental study. Level IV. Opinion of respected authorities and/or nationally recognized expert committees/consensus panels based on scientific evidence. Level V. What evidence is inadmissible in court? Evidence […]

What are the 4 ways energy can be transferred between stores? There are 4 ways energy can be transferred; Mechanically – By the action of a force. Electrically – By an electrical current. By radiation – By Light waves or Sound waves. By heating – By conduction, convection or radiation. How can you increase the […]

What is the most serious crime affecting society? Homicide, of course, is considered the most serious crime because it involves the taking of a human life. As well, homicide data are considered more accurate than those for other crimes because most homicides come to the attention of the police and are more likely than other […]

Do those or does those? Roger Woodham replies: We use do/does or is/are as question words when we want to ask yes/no questions. We use does and is with third person singular pronouns (he, she, it) and with singular noun forms. We use do and are with other personal pronouns (you, we they) and with […]

Why load is connected in parallel? In the parallel system, each of the load elements is connected across the same terminals, therefore each has the same voltage drop: Voltage across each resistor is the same as the voltage across the parallel combination. Can different solar panels be connected in parallel? The basics of connecting different […]

Does the media always have to act on its right to publish? Unless restricted by a valid prior restraint (which is rare), the news media are free to publish any information or opinion they desire. This freedom, however, does not immunize them from liability for what they publish. A newspaper that publishes false information about […]