Physics, 16.07.2019 16:10 CauseWhyNot6235
Two children push on opposite sides of a door during play. both push horizontally and perpendicular to the door. one child pushes with a force of 17.5 n at a distance of 0.600 m from the hinges, and the second child pushes at a distance of 0.450 m. what force must the second child exert to keep the door from moving? assume friction is negligible.
Answers: 2
Physics, 22.06.2019 10:00, autumnskye1
In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final
Answers: 3
Physics, 22.06.2019 13:00, chie42
Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.
Answers: 2
Two children push on opposite sides of a door during play. both push horizontally and perpendicular...
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