Physics, 28.09.2021 20:00 montanolumpuy
For a long time it was the dream of many runners to break the "4-minute mile." Now quite a few runners have achieved what once seemed an impossible goal. On July 2, 1988, Steve Cram of Great Britain ran a mile in 3.81 min. During this amazing run, what was Steve Cram's average speed
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Physics, 22.06.2019 02:50
Ammonia enters the expansion valve of a refrigeration system at a pressure of 10 bar and a temperature of 18oc and exits at 6.0 bar. the refrigerant undergoes a throttling process. determine the temperature, in oc, and the quality of the refrigerant at the exit of the expansion valve.
Answers: 3
Physics, 22.06.2019 06:40
How does the kinetic energy of a charge change as the charge moves under the effect of an electric field from higher potential to lower potential? a.the kinetic energy increases.b.the kinetic energy decreases.c.the kinetic energy remains the same.d.the kinetic energy is always zero.
Answers: 1
Physics, 22.06.2019 17:30
Does heating a metal wire increase or decrease its electrical resistance? why?
Answers: 1
For a long time it was the dream of many runners to break the "4-minute mile." Now quite a few runne...
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