How is the first law of thermodynamics calculated? The first law of thermodynamics is given as ΔU = Q − W, where ΔU is the change in internal energy of a system, Q is the net heat transfer (the sum of all heat transfer into and out of the system), and W is the net […]
What is the oldest advertising medium?
What is the oldest advertising medium? Bronze plate for printing an advertisement for the Liu family needle shop at Jinan, Song dynasty China. It is considered the world’s earliest identified printed advertising medium. How old is advertising? The origins of advertising can be traced back to newspaper advertising in the 19th Century. In addition to […]
What does oxygen get reduced to at the end of the electron transport chain?
What does oxygen get reduced to at the end of the electron transport chain? At the end of the pathway, the electrons are used to reduce an oxygen molecule to oxygen ions. The extra electrons on the oxygen attract hydrogen ions (protons) from the surrounding medium, and water is formed. Is oxygen reduced or oxidized? […]
What are elements 2 examples?
What are elements 2 examples? Examples of elements include carbon, oxygen, hydrogen, gold, silver and iron. Each element is made up of just one type of atom. An atom is the smallest particle of an element that still characterizes the element. What elements are the most important? Scientists believe that about 25 of the known […]
How do you know if a parametrization is smooth?
How do you know if a parametrization is smooth? A curve defined by x=f(t),y=g(t) is smooth if f′(x) and g′(x) are continuous and not simultaneously zero. Why do we have the second condition(simultaneously zero)? How do you smooth a dataset? Data smoothing can be defined as a statistical approach of eliminating outliers from datasets to […]
Which is the most stable complex?
Does buoyancy depend on depth?
Does buoyancy depend on depth? Surprisingly the buoyant force doesn’t depend on the overall depth of the object submerged. In other words, as long as the can of beans is fully submerged, bringing it to a deeper and deeper depth will not change the buoyant force. It’s just that for sinking objects, their weight is […]
What is the first reptile?
What is the first reptile? Hylonomus How many hearts did dinosaurs have? four Did dinosaurs have 2 Hearts? There’s no evidence that dinosaurs of any sort had bizarre accessory hearts, but the idea has still played a small role in the ongoing investigation into how giant dinosaurs actually lived. To start, we have to go […]
Will a paperclip sink or float?
Will a paperclip sink or float? It seems to defy the laws of physics, but a paper clip made of steel can indeed float on the water surface. The high surface tension helps the paper clip – with much higher density – float on the water. The cohesive forces between liquid molecules are responsible for […]
Which of the following can happen if the distance between two object is increased?
Which of the following can happen if the distance between two object is increased? So as the mass of either object increases, the force of gravitational attraction between them also increases. Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in […]