Answer:
A 2000 kg car accelerate at a rate of 0.5 m/s2. What is the net force acting on the car in Newtons? (Numeric Answers only)
Chemical Reactions Involving rearrangements (sharing, donating, or accepting) of valence electrons The element undergoing a chemical reaction does not change Nuclear Reactions Involve nucleus.
(not electrons) Often results in change in elements (since element is defined by number of protons) isotopes have same number of protons and a different number of neutrons Fusion (adding two nuclei together) Fission (breaking apart) Radioactive decay At high temperatures nuclear fusion can occur At very high temperatures, some electrons on atoms are stripped away (they have so much energy that they can overcome the attraction to the nucleus) forming a plasma fusion occurs in stars Plasma is the 4th fundamental state of matter and is most abundant form of matter in the universe If there is enough kinetic energy in the system, the nuclei can get closer; at that point the strong nuclear force comes into play Strong nuclear force is strongest and hold nucleus together; acts at only extremely short distances, 10 m If nuclei can get close enough, the strong nuclear force can come into play (distances of about a nucleon) attractive force; requires great deal of energy PE curve vs. distance curve for 2 nuclei approaching Lect
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