Adisplacement is related to time as x = a sin(2πft), where a and f are constants. find the dimensions of a. [hint: a trigonometric function appearing in an equation must be dimensionless.]

we are given

displacement is

now, we are given

rigonometric function appearing in an equation must be dimensionless

so,

must be dimensionless

so, unit of x and unit of 'a' must be same

so, unit of 'a' will be unit of displacment

and unit of displacemet is metre(m)

so, unit of 'a' will be metre(m).............Answer

$18 was the price of the t-shirt

step-by-step explanation:

2/3x + 7 = 29

step-by-step explanation:

two thirds = 2/3

plus a number = x

at least 29 = 29

there for you should get 2/3x + 7 = 29