True!
Acceleration
The specific rate constant a proportionally determined constant that is usually different for various reactions with changes in temperature.
The gradient of a quantity is the greatest rate at which it changes as you move in different directions from where you are now. If the quantity has a negative gradient, that means that the quantity decreases in that direction. A great example of a negative gradient is the elevation of the land at a point on a road that has a hill on one side and a cliff on the other side. The greatest rate at which the elevation changes is in the direction off the edge of the cliff, and it's negative in that direction.
The integral of the absolute value function, |x|, is given by the piecewise function ∫|x|dx = (x^2)/2 + C for x ≥ 0 and ∫|x|dx = (-x^2)/2 + C for x < 0, where C is the constant of integration. This is because the absolute value function changes its behavior at x = 0, resulting in two different expressions for the integral depending on the sign of x.
When you do an integration, you are (implicitly or explicitly) recognizing that what you are integrating is a "rate of change". Your integration over a particular interval provides you with the answer to the question "what is the total change over this interval?". To get the total value of this quantity you must add the initial amount or value. That is represented by the constant of integration. When you integrate between specific limits and you are asking the question "how much is the total change" the initial value is not needed, and in fact does not appear when you insert the initial and final values of the variable over which you are integrating. So you must distinguish between finding the total change, or finding the final value. Re-reading this, I could have been a bit clearer. I'll give an example. Suppose something is accelerating at a constant acceleration designated by "a". Between the times t1 and t2 the velocity changes by a(t2-t1) which you get by integrating "a" and applying the limits t2 and t1. But the change in velocity is not the same as the velocity itself, which is equal to the initial velocity, "vo", plus the change in velocity a(t2-t1). This shows that the integral between limits just gives the accumulated change. but if you want the final VALUE, you have to add on the initial value. You might see a statement like "the integral of a with respect to time, when a is constant is vo + at ". You can check this by differentiating with respect to t, and you find the constant vo disappears. In summary, the integral evaluated by simply applying the limits gives the accumulated change, but to get the final value you have to add on the pre-existing value, and in this context the pre-existing value also carries the name of "constant of integration".
Linear proportion refers to a relationship between two quantities where the ratio between them remains constant. In a linear proportion, if one quantity increases or decreases, the other quantity changes at a constant rate, resulting in a straight-line graph when plotted. This concept is often represented by the equation (y = kx), where (k) is the constant of proportionality. Examples include situations where doubling one quantity results in a doubling of the other, such as in speed and distance.
A proportional situation refers to a scenario where two quantities maintain a constant ratio or relationship to each other. This means that as one quantity increases or decreases, the other quantity changes in a predictable manner based on that ratio. For example, if a car travels at a constant speed, the distance covered is proportional to the time spent traveling. Proportional situations can be represented mathematically by the equation (y = kx), where (k) is the constant of proportionality.
A moving body can be broken into the factors of mass and velocity. Momentum is the quantity that changes as velocity increases or decreases, assuming mass is held constant.
Yes, you can have constant speed but change in velocity if the direction of motion changes. Velocity is a vector quantity that includes both speed and direction. So, even if the speed remains constant, if the direction changes, the velocity changes.
The speed of an object in circular motion remains constant while the direction of the velocity changes continuously.
A variable is a quantity which changes its value through out the program or its lifetime. But a constant is a quantity which does not change its value through out its life time. There are 5 basic constants.
The rate of a changing quantity is the derivative of that quantity with respect to time. It represents how fast the quantity is changing at a specific point in time. This rate can be constant or variable depending on the nature of the change.
0 A derivative is the rate of change of a function as another variable changes. As there is no change to a constant, the derivative is necessarily 0.
The rate of change in math refers to how a quantity changes in relation to another quantity, often expressed as a ratio. It is commonly represented by the derivative in calculus, indicating the slope of a function at a specific point. In simpler terms, it measures how much one variable changes when another variable changes, such as speed being the rate of change of distance with respect to time. This concept is fundamental in various fields, including physics, economics, and biology.
It means how much some quantity (for example, electrical resistance) changes as a function of temperature.
It means how much some quantity (for example, electrical resistance) changes as a function of temperature.
A relationship between two quantities where the rate of change or the ratio of one quantity to the other is constant is known as a direct proportion. In this scenario, as one quantity increases or decreases, the other quantity changes at a consistent rate, maintaining a fixed ratio. For example, if you have a constant speed while traveling, the distance covered is directly proportional to the time spent traveling. This relationship can be expressed mathematically as ( y = kx ), where ( k ) is the constant of proportionality.