Category: Physics

What are two ways that a liquid can be turned into a gas? Vaporization of a sample of liquid is a phase transition from the liquid phase to the gas phase. There are two types of vaporization: evaporation and boiling. Evaporation occurs at temperatures below the boiling point, and occurs on the liquid’s surface. What […]

What is the purpose of humans on Earth? All other things on the face of the earth are created for human beings in order to help them pursue the end for which they are created. It follows from this that one must use other created things, in so far as they help towards one’s end, […]

What does a new moon indicate? As a new moon represents the start of a new lunar cycle, it symbolises new beginnings. People use the energy of a new moon to achieve their goals or start on a new project. They also reflect on their old goals and set themselves new ones. What should I […]

Why are low flow shower heads better? Here’s why water efficient shower heads are so popular: They reduce your overall water consumption – which, in the shower, is generally hot water that costs money to heat. They reduce the amount of wastewater generated by homes. With less energy needed to heat water, they also reduce […]

Does the Beagle ship still exist? It said no evidence of the Beagle itself has yet been found. Following the Beagle’s third and final exploratory voyage in 1843 it was refitted as a static watch vessel for the coastguard in 1845, until sold in 1870. Why was Darwin’s ship named Beagle? In 1837 HMS Beagle […]

What is real matrix? A real matrix is a matrix whose elements consist entirely of real numbers. The set of real matrices is sometimes denoted. (Zwillinger 1995, p. 116). SEE ALSO: Complex Matrix, Integer Matrix, Matrix, Random Matrix, Real Number, Square Matrix. What is meant by Hermitian matrix? : a square matrix having the property […]

¿Qué es el análisis dimensional? ANÁLISIS DIMENSIONAL El análisis dimensional es una rama auxiliar de la física que estudia la forma como se relacionan las magnitudes derivadas con las fundamentales. ¿Qué magnitud se obtiene al dividir las ecuaciones dimensionales de la energía y el peso? Respuesta certificada por un experto La magnitud que se obtiene […]

Is it better to breathe through your nose or mouth when exercising? The nose also adds moisture and warmth to inhaled air for smoother entry to the lungs. Nasal breathing, as opposed to mouth breathing, has another important advantage, especially for effective and efficient exercise: It can allow for more oxygen to get to active […]

How fast is a DC motor? DC controls adjust speed by varying the voltage sent to the motor (this differs from AC motor controls which adjust the line frequency to the motor). Typical no load or synchronous speeds for an AC fractional horsepower motor are 1800 or 3600 rpm, and 1000-5000 rpm for DC fractional […]

Can Bone Bend? Long bones may bend without breaking the cortex. Children’s bones can be bent to 45 degrees before the cortex is disrupted and a greenstick or a complete fracture occurs. However if the bending force is released the bone may only partially return to its pre-bent position, resulting in plastic bowing. Does vinegar […]