Standard Normal Distribution What is the standard normal distribution? The standard normal distribution is a normal distribution where the mean is 0 and the standard deviation is 1 Why is the stand...
Edexcel IGCSE Physics 复习笔记 1.2.5 Weight Weight Weight is defined as: The force acting on an object due to gravitational attraction Planets have strong gravitational fields ...
Coefficient of Friction What is friction? Friction is a force between a surface and an object that acts to resist motion of the object across the surface On a horizontal surface with no forc...
Edexcel IGCSE Physics 复习笔记 1.2.4 Unbalanced Forces Unbalanced Forces Forces can combine to produce Balanced forces Unbalanced forces Balanced forces mean that the fo...
Calculating Normal Probabilities How do I find probabilities using a normal distribution? How do I calculate P(X = x): the probability of a single value for a normal distribution? How do I calcula...
Resolving Forces If a single force is applied at an angle to the direction of motion it will need to be resolved into components of the force that act perpendicular to each other. Why resol...
Properties of Normal Distribution The binomial distribution is an example of a discrete probability distribution. The normal distribution is an example of a continuous probability distribution. Wha...
F = ma - Vector Notation How is Newton’s Second Law (N2L) used with vectors? The resultant force (F) and acceleration (a) are vectors For forces and motion in two dimensions, F N and a m s-2...
Calculating Binomial Probabilities How do I calculate P(X = x): the probability of a single value for a binomial distribution? How do I calculate P(a ≤ X ≤ b): the cumulative probabilities for a bi...
