How many workouts per week of vigorous, continuous activity are needed to improve your cardiorespitory fitness? A. 2-3 B. 3-5 C. 4-5 D. 5-6

How do patterns in motion of the stars tell us about the origin of our Universe?

What are petrochemicals summarize

Which are advantages of using nuclear reactors to generate electricity? Check all that apply. Nuclear power produces no hazardous byproducts. Nuclear power has a high output. Nuclear power uses nonharmful fuel. Nuclear power is readily available.

What are possible units of speed or velocity? A. km/hr B. sec/m C. kg/sec D. m/sec2

Find the potential 1.24 cm from a proton. the coulomb constant is 8.9876 * 109 n m2 / c 2 and the elemental charge is 1.602 * 10-19 c

Sulfur oxides (SO2) are responsible for A) global warming. B) greenhouse gases. C) producing acid rain. D) destroying the ozone layer.

During a collision between a photon and an electron, there is conservation of

To produce change in motion, a force must be a (n) A) balanced force B) unbalanced force C) frictional force D) gravitational force

What is meant when Earth's systems are said to be "dynamic"? they are all the same type they are slow moving they cannot be measured they are constantly changing

Which of the following statements about electrons is FALSE? Group of answer choices the closer an electron is to the nucleus, the more strongly the electron is attracted to the nucleus and therefore the more potential energy the electron has