P is Directly Proportional to the Cube of Q
Category: Proportion
y is directly proportional to the cube of x
y increased by 800%
Painting a house
5 men are hired to paint a house. If an additional man is hired, the painting can be completed 4 days earlier. Calculate the number of additional men to be hired if the painting is to be completed 18 days earlier.
Pressure inversely proportional to the volume
The pressure, P, Pa, of an object, is inversely proportional to the volume of a cube.
The pressure is 1000 Pa when the length of the cube is l cm.
Find the new pressure when the length of the cube increases by 400%.
Force inversely proportional to the square of the distance
s is directly proportional to the square of v
s is directly proportional to the square of v. It is known that s = 36 for a particular value of v.
Find the value of s when this value of v is halved.
