A 0.25 kg tuning fork is tied to a string and whirled around in a horizontal circle of radius 0.75 m and at a speed of 5 m/s. How much work is done by the string after 10 rotations?

a. 312.5J

b. 117.8J

c. None

d. Not enough information

Write the correct abbreviation for each metric unit

The vapour pressure of benzene is 53.3 kpa at 60.6 °c, but it fell to 51.5 kpa when 19.0 g of a non-volatile organic compound was dissolved in 500 g of benzene. calculate the molar mass of the compound.

Rank the six combinations of electric charges on the basis of the electric force acting on q1. define forces pointing to the right as positive and forces pointing to the left as negative. rank positive forces as larger than negative forces. q1,q2,q3 = positive(+) q1 = + q2 = + q3 = - q1 = + q2= - q3= + q1= - q2= + q3= + q1= + q2= - q3= - q1,q2,q3 = negative