Miguel wants his toy car to reach the bottom of a ramp as fast as possible. which ramp will result in the fastest speed?

a. a carpeted ramp
b. a wood ramp
c. a sandpaper ramp
d. a cork ramp

plz

Most energy in an ecosystem comes originally from_

Examine the nuclear reacti why is this classified as a nuclear reaction rather than a chemical reaction? it is not balanced. a new compound is formed. a change has occurred in a nucleus. a new element has been formed.

Daughter element the new element produced along with a decay particle in a nuclear transmutation 2. half-life the substance that decays in a nuclear transmutation 3. parent element the change of one chemical element into another by nuclear decay or radioactive bombardment 4. transmutation the time required for the decay of one-half of the atoms in a sample of radioactive material