23. In an A. C., which one of these holds true? (a) Potential in the circuit is high (b) Polarity changes continuously at a constant (c) Polarity does not change continuously (d) Resistance in the circuit is very low​

Bone-strengthening physical activity done increases bone-mineral content and bone density in youth.

An object thrown vertically upward from the surface of a celestial body at a velocity of 36 m/s reaches a height of sequalsminus0.9tsquaredplus36t meters in t seconds. a. determine the velocity v of the object after t seconds. b. when does the object reach its highest point? c. what is the height of the object at the highest point? d. when does the object strike the ground? e. with what velocity does the object strike the ground? f. on what intervals is the speed increasing?

Write a question about how changing temperature affects the gas inside the sports ball