13 8. A building superintendent twirls a set of keys in a
circle at the end of a cord. If the keys have a centrip-
etal acceleration of 145 m/s2 and the cord has a
length of 0.34 m, what is the tangential speed of the
keys?
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14. I
th

The variables for this experiment include mass, volume and the materials in the various balls, as well as their densities. in part iii, you will be investigating the questionable baseball. use the drop-down menus to complete the sentences and identify the independent and dependent variables. in part iii, the independent variable, the one that is intentionally manipulated, is . in part iii, the dependent variable, the one that you measure the response in, is

Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.

Anybody wanna ? (picture included? )