Suppose the displacement x of another object is related to time t according to x = a sin(2nft), where a and f are constants. what are the dimensions of a? a. l x t b. l / t c. l d. t / l e. t

C. L

Explanation:

Given that

Displacement of the object is given as

x = A sin(2 n f t)

We know that

Quantity                          Dimensions

Length/Amplitude                  L

Distance /Displacement     L

Time                                     T

Velocity                               LT⁻¹

Acceleration                       LT⁻²

Area                                    L²

Mass                                   M

Frequency                         T⁻¹

Given that x is the displacement that is why the dimensions of the displacement will be L.

Now by balancing the dimensions both sides ,the dimensions of the A will be L.

C. L

hello, i am papaguy.

i have found an answer to your question but use it as information.

information: because weak acids/bases have low concentration of hydrogen ions, the addition of water has a large impact on the ph. 2. a difference in 1 unit is a 10x difference in concentration for example; a liquid with ph of 3 is 10x more acidic than a liquid with a ph of 4. therefore, a liquid with a ph of 3 is stronger.

best of luck!

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.