1. Power is focused on short but extreme effort. Which of the following actions demonstrate power?
A. When a player sprint using an arm swing
B. When a player reacts to where the ball is
C. When an athlete jumps in an explosive acceleration
D. When a player digs the ball to return to the opposite side
2. Which physical activity requires agility or the ability to change direction quickly?
A. Basketball C. Sprinting
B. Long-Jump D. Throwing
3. Which playing skills needs eye coordination?
A. Holding a ball C. Shooting a ball
B. Passing a ball D. Throwing a ball
4. Which of the following exercises enhances the balancing skills of a player?
A. Carioca C. Jumping jacks
B. Back pedal D. All of the above
5. What are the benefits of playing sports such as basketball, volleyball,
softball/baseball, and others?
A. Reduces stress
B. Stretches your muscles
C. It develops teamwork/camaraderie
D. All of the above

Which statement best describes copper? a. it has a low resistance and prevents charges from moving freely. b it has a high resistance and allows charges to move freely. c. it has a high resistance and prevents charges from moving freely. d. it has a low resistance and allows charges to move freely

Some material consisting of a collection of microscopic objects is kept at a high temperature. a photon detector capable of detecting photon energies from infrared through ultraviolet observes photons emitted with energies of 0.3 ev, 0.5 ev, 0.8 ev, 2.0ev, 2.5ev, and 2.8ev. these are the only photon energies observed. (a) draw and label a possible energy-level diagram for one of the microscopic objects, which has four bound states. on the diagram, indicate the transitions corresponding to the emitted photons. explain briefly. (b) would a spring–mass model be a good model for these microscopic objects? why or why not? (c) the material is now cooled down to a very low temperature, and the photon detector stops detecting photon emissions. next, a beam of light with a continuous range of energies from infrared through ultraviolet shines on the material, and the photon detector observes the beam of light after it passes through the material. what photon energies in this beam of light are observed to be significantly reduced in intensity (“dark absorption lines”)? explain briefly.

Carbon-14 is a radioactive element that undergoes beta decay. which force is responsible for allowing carbon-14 to become stable? electromagnetic gravitational weak nuclear strong nuclear