A100g mass is swung around a tube 50 times in 1 minute. a. calculate the angular velocity of the 100 g mass.

The angular velocity is defined as "the angle changing over time." 

From the given of the problem:

m = 100g
rate of revolution = 50 rev / min

Therefore, using the formula:

angular velocity = rate of revolution x 2*pi / revolution

Substituting:

angular velocity = (50 revs / min) x ( 2*pi radians / rev ) = 100*pi radians / min

As you can see, mass is not a part of the equation for solving the angular velocity therefore the amount of mass does not affect its value.

She sold 135 peaches, because if you multiply 2.50 eith 135, you'd get 337.5, the 0 can be added or not.