Describe the relationship between wavelength and frequency. When you change one, what happens to the other? Please answer this asap my group is having trouble with this please

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min

The amount of data left on the cell phone six gb for 81.5 gb of data is used how much data is available at the beginning of the cycle