Until it was recently discontinued , the fastest jet plane in the skies was the Lockheed SR-71 Blackbird . However , this plane did not reach its high speeds through large acceleration . The plane had a mass of 7.7*10^ 4 kg and was driven by an estimated unbalanced force of about 7.23 * 10 ^ 5 * N What was the acceleration of the Lockheed SR- 71?

Examples of states of consciousness include a. daydreaming b. dreaming during sleep c. hypnosis d. all of the above

Which best term to describe a chemical reaction that absorbs energy from its surroundings? a.thermal conductor b.thermal insulator c.endothermic d.exothermic

When a lead acid car battery is recharged by the alternator, it acts essentially as an electrolytic cell in which solid lead(ii) sulfate is reduced to lead at the cathode and oxidized to solid lead(ii) oxide at the anode. suppose a current of is fed into a car battery for seconds. calculate the mass of lead deposited on the cathode of the battery.