Why do pennies sink in water? The reason the pennies sink in water is because of an idea called density. The pennies have more density than the water, and so the pennies sink. Anything with more density than water will sink in water, but other objects that have less density than water will float. What […]
Can you diffract a human?
Can you diffract a human? Since Plank’s constant is on the order of 10-34, the de Broglie wavelength is virtually undetectable for large amounts of matter. There is much evidence of matter possessing such a de Broglie wavelength. Well, theoretically, since all matter possess wave-like properties, so do humans, and cats, and whatever you please. […]
What type of ozone is bad?
What type of ozone is bad? Stratospheric ozone is “good” because it protects living things from ultraviolet radiation from the sun. Ground-level ozone, the topic of this website, is “bad” because it can trigger a variety of health problems, particularly for children, the elderly, and people of all ages who have lung diseases such as […]
What is binding energy used for?
What is binding energy used for? Binding energy, amount of energy required to separate a particle from a system of particles or to disperse all the particles of the system. Binding energy is especially applicable to subatomic particles in atomic nuclei, to electrons bound to nuclei in atoms, and to atoms and ions bound together […]
What are the similarities and differences between weathering and erosion?
What are the similarities and differences between weathering and erosion? When the smaller rock pieces (now pebbles, sand or soil) are moved by these natural forces, it is called erosion. So, if a rock is changed or broken but stays where it is, it is called weathering. If the pieces of weathered rock are moved […]
Can you use the quadratic formula for inequalities?
Can you use the quadratic formula for inequalities? In other words, a quadratic inequality is in standard form when the inequality is set to 0. Just like in a quadratic equation, the degree of the polynomial expression is two. This method of solving quadratic inequalities only works if the quadratic factors. What is the purpose […]
What does it mean if a circuit is in steady state?
What does it mean if a circuit is in steady state? In electronics, steady state is an equilibrium condition of a circuit or network that occurs as the effects of transients are no longer important. Steady state is reached (attained) after transient (initial, oscillating or turbulent) state has subsided. Why does a capacitor act as […]
How high will it bounce rebound ratios?
How high will it bounce rebound ratios? Tennis balls: Must rebound approximately 111cm when dropped from 200 cm. Soccer balls: Must rebound approximately 120cm when dropped form 200cm onto a steel plate. Basketballs: Must rebound approximately 53.5 inches when dropped from 72 inches onto a wooden floor. How can you tell how high a ball […]
What is the shortest unit in music?
What is the shortest unit in music? Music Test One Question Answer What is the smallest unit of music? A note Define phrases. Brief musical statements used to mimic speech In music, what is like a period in a sentence? Cadence Define cadence. A point of arrival, where the melody comes to rest What is […]
What are two substances?
What are two substances? Two Main Types of Pure Substances Elements and compounds are the two types of pure substances. Examples of common elements include carbon, nitrogen and hydrogen. They consist of one type of atom and cannot break down into something else. Every pure carbon substance, for example, has the same particles in it. […]