Is eccentricity positive or negative? In mathematics, the eccentricity of a conic section is a non-negative real number that uniquely characterizes its shape. How is eccentricity calculated? The formula to determine the eccentricity of an ellipse is the distance between foci divided by the length of the major axis. What does a negative eccentricity mean? […]
How high can a helium balloon go?
How high can a helium balloon go? 9,000 meters What happens to a helium balloon in space? One is that atmospheric pressure is dramatically reduced at high altitudes, so a helium balloon expands as it rises and eventually explodes. But the elasticity of rubber decreases at very low temperatures so it is possible that helium […]
What happens when a warm and cold air mass collide?
What happens when a warm and cold air mass collide? When a warm air mass meets a cold air mass, the warm air rises since it is lighter. As it rises, the warm air cools rapidly. This configuration, called a cold front, gives rise to cumulonimbus clouds, often associated with heavy precipitation and storms. What […]
Can a load be a resistor?
Can a load be a resistor? Devices called resistors are built to provide precise amounts of resistance in electric circuits. Any device that performs some useful task with electric power is generally known as a load. Sometimes resistor symbols are used in schematic diagrams to designate a non-specific load, rather than an actual resistor. What […]
What is the relation between refractive index and intensity?
What is the relation between refractive index and intensity? The intensity of light (as calculated from time average of the poynting vector) is given by I=(1/2)ϵvE20. Here the intensity is dependent on the velocity of light in the medium. The refractive index also depends on the velocity of light. What is the speed and intensity […]
How does oxygen turn into ion?
How does oxygen turn into ion? Oxygen, O. Oxygen is in Group 6. It has six electrons in its outer shell. It gains two electrons from one or two other atoms in reactions, forming an oxide ion, O 2-. Can oxygen ion be positive? Thus, an energetic electron passing near or through an oxygen molecule, […]
How can you tell if MAP sensor is bad?
How can you tell if MAP sensor is bad? What to look out for in a failing MAP sensor Rich air-fuel ratio: Look for rough idle, poor fuel economy, slow acceleration and a strong smell of gasoline (especially at idle) Lean air-fuel ratio: Look for surging, stalling, lack of power, hesitation on acceleration, backfiring through […]
What factors affect collision theory?
What factors affect collision theory? Key Takeaways Reactions occur when two reactant molecules effectively collide, each having minimum energy and correct orientation. Reactant concentration, the physical state of the reactants, and surface area, temperature, and the presence of a catalyst are the four main factors that affect reaction rate. What are the 5 major factors […]
What is a good analogy?
What is a good analogy? A good analogy is a compromise between two conflicting goals: familiarity and representativeness. Good analogies are familiar. They express an abstract idea in terms of a familiar one. But a good analogy doesn’t need to be concrete, it only needs to be expressed in terms of an idea you already […]
Who will be fined for not wearing a seatbelt?
Who will be fined for not wearing a seatbelt? By law, drivers must ensure that they and any other passenger in the vehicle are wearing their seatbelt, regardless of their age. However, passengers are still accountable, as both drivers and passengers aged 16 years and over can be fined if they fail to wear a […]