Two particles are joined by a light inextensible string over a smooth pulley. What do they share?

The same magnitude of acceleration

In stratified sampling, the number taken from each group is:

Proportional to the group's size

Sum of x squared over n, minus the mean squared

Each trial has exactly two outcomes

n choose r, times p to the r, times (1 minus p) to the n minus r

1 minus the probability of none

16questions. Pick an answer and you'll see why right away.

Which equation of motion does not involve displacement?
On a velocity-time graph, the gradient represents:
A ball is thrown straight up. At its highest point, its velocity is:
Newton's second law is written as:
What is the weight of a 5 kg mass, taking g = 9.8 m per s squared?
Two particles are joined by a light inextensible string over a smooth pulley. What do they share?
In stratified sampling, the number taken from each group is:
A survey of every member of a population is called a:
In a histogram, frequency is represented by the:
The variance of a data set is given by:
Events A and B are independent. What is $P(A \cap B)$ ?
For any two events, $P(A \cup B)$ equals:
Which is a condition for the binomial distribution?
For $X \sim B(n, p)$ , the probability of exactly $r$ successes is:
The mean of $X \sim B(40, 0.25)$ is:
The probability of 'at least one' success is most easily found as: