Category: Physics

How do you write amplitude? The Amplitude is the height from the center line to the peak (or to the trough)….Now we can see: amplitude is A = 3. period is 2π/100 = 0.02 π phase shift is C = 0.01 (to the left) vertical shift is D = 0. What happens if you increase […]

What is the relationship between half-life and decay constant? This shows that the population decays exponentially at a rate that depends on the decay constant. The time required for half of the original population of radioactive atoms to decay is called the half-life. The relationship between the half-life, T1/2, and the decay constant is given […]

Which Cannot be separated physically? What is a Pure Substance? It is something which cannot be divided into parts by physical means, as it’s all made up of the same thing. Pure substances are either elements or compounds. Elements can NOT be separated into other types of matter (physically or chemically). What are the examples […]

Can Dolphins communicate with humans? Can dolphins communicate with humans? Dolphins and humans can communicate to a limited degree. Dolphins are capable of learning skills based on human instruction and expressing certain desires. Any dolphin trainer will tell you that dolphins and humans can indeed communicate in a limited in fashion. Do we understand dolphin […]

Does oxygen follow octet rule? Octet rule: The concept that compounds containing carbon, nitrogen, oxygen, and fluorine are more stable if these atoms have eight valence electrons. When one of these atoms has less than eight valence electrons it has an open octet. Every carbon, nitrogen, oxygen, and fluorine atom in this molecule has a […]

Why is it important to have a reference point? A reference point is important in determining motion because in order to say that something is moving, you need to have something stationary to compare it to. Is the cyclist accelerating How do you know? How do you know the cyclist is accelerating? a graph of […]

What happens if the temperature is higher than the dew point? Dew points indicate the amount moisture in the air. The higher the dew points, the higher the moisture content of the air at a given temperature. When the dew point temperature and air temperature are equal, the air is said to be saturated. Dew […]

What are the equations of motion in circular path? An object executing uniform circular motion can be described with equations of motion. The position vector of the object is →r(t)=Acosωt^i+Asinωt^j, r → ( t ) = A cos ω t i ^ + A sin ω t j ^ , where A is the magnitude […]

Does a bullet touch the barrel? Bullets touch the inside of the gun’s barrel during normal operation. There’s rifling inside the barrel that’s supposed to impart spin on the bullet. So the barrel rubs grooves in the bullet (this is how CSI can match a bullet to a gun) but the softer bullet does little […]

What gases are released when wood burns? When wood is burned, the combustion reaction produces heat and emissions in the form of water, organic vapors, gases, and particulates. The emissions of most concern are carbon monoxide (CO), carbon dioxide (CO2), sulfur oxides (SOx), and nitrogen oxides (NOx). Does burning wood cause global warming? Scientists estimate […]