Category: Physics

Is NaCl acidic or basic? A salt that is derived from the reaction of a strong acid with a strong base forms a solution that has a pH of 7. An example is sodium chloride, formed from the neutralization of HCl by NaOH….Salts That Form Neutral Solutions. Salt formed from: Salt Solution Weak acid + […]

Why the power magnet is concentrated at the pole? The magnetic field of a bar magnet is strongest at either pole of the magnet. The force is weaker in the middle of the magnet and halfway between the pole and the center. The magnetic field gets weaker the further you get from either pole, so […]

What do the lithosphere and asthenosphere have in common? Both the lithosphere and asthenosphere are part of Earth and are made of similar material. Lithosphere is made up of Earth’s outermost layer, the crust, and the uppermost portion of the mantle. In comparison, the asthenosphere is the upper portion of Earth’s mantle (which is also […]

Why is phrenology no longer accepted? Phrenology was mostly discredited as a scientific theory by the 1840s. This was due only in part to a growing amount of evidence against phrenology. Phrenologists had never been able to agree on the most basic mental organ numbers, going from 27 to over 40, and had difficulty locating […]

What are the evidences of continental drift theory? In the early part of the 20th century, scientists began to put together evidence that the continents could move around on Earth’s surface. The evidence for continental drift included the fit of the continents; the distribution of ancient fossils, rocks, and mountain ranges; and the locations of […]

What is my healthy weight? Adult BMI Calculator BMI Weight Status Below 18.5 Underweight 18.5—24.9 Normal 25.0—29.9 Overweight 30.0 and Above Obese How much should I weigh for my frame size? Ideal Body Weight Add 5 pounds for every inch over 5 feet that you are. With this number you can subtract 10% for small […]

How do you show subsets in a Venn diagram? Venn Diagrams If a set A is a subset of set B, then the circle representing set A is drawn inside the circle representing set B. If set A and set B have some elements in common, then to represent them, we draw two circles which […]

Is the sun radiant energy? Does the Sun produce radiant energy? Yes, the Sun produces a lot of radiant energy, which is transmitted to Earth as light. Plants convert the electromagnetic energy in sunlight into chemical energy for their food, through a process called photosynthesis. What gives off radiant energy? The term radiant energy refers […]

What are the pros and cons to oil? The process of bringing Oil to the surface for us to use is called oil drilling, this creates many Pros and Cons of Oil Energy….Pros of Oil Energy Oil Laid the Foundation for Renewable Energy. Oil is Cheap. The Oil Industry Produces Jobs. Oil Goes a Long […]

What are examples of reactants? Examples of Reactants The wax of a candle and oxygen in air are reactants in a combustion reaction. When you burn methane gas, the reactants are methane (CH4) and oxygen in air (O2). When water forms from its elements, the reactants are hydrogen (H2) and oxygen (O2) gas. What are […]