Florence and Jackie jog around Lake Galena a distance of about 6.0 miles. If Florence jogs at 4.0 m/s and Jackie jogs at 4.2 m/s, how long will Jackie have to wait for Florence?

If forces acting on an object are unbalanced, which factors may result fron an unbalanced force? check all that apply

Your target variable is δf, the magnitude of the difference in frequency between the waves emitted from the sonar device and the waves received by the device after reflecting off the whale. write an expression for δf in terms of the relevant frequencies using the subscript notation introduced above.

What happens to an isotope during radioactive decay?