A member of the football team jumps straight up and their center of mass has a speed of 2.88 m/s as they leave the field. How high above this point is their center of mass at the following times? (Enter your answers in m. Ignore the effects of air resistance, and assume the initial height of their center of mass is at y = 0.)

If an atom contains 11 protons in its nucleus, predict the element with the atomic number and electronic configuration. will the number of electrons remain the same during the chemical reaction in such an atom? explain.

What occurs during a combustion reaction

**urgent** roberto plans to use two transformers to reduce a voltage of 120 v to 4 v. he uses a transformer that has 300 coils in the primary winding and 50 coils in the secondary winding. he has four other transformers, as listed in the table. which transformer should roberto use to have an ending voltage of 4 v? a- w b-xc- yd- z