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Physics, 23.06.2019 16:20, mollywolly99
In an exothermic chemical reaction the energy gained by the surroundings must be the energy lost by the reaction
Answers: 1
Physics, 23.06.2019 17:00, shreyapatel2004
Astudent pushes on a 20.0 kg box with a force of 50 n at an angle of 30° below the horizontal. the box accelerates at a rate of 0.5 m/s2. what is the value of the friction force on the box? 200 n 50 n 43 n 33 n
Answers: 1
Physics, 23.06.2019 18:20, summer5716
Regarding the history of the universe, which of the following is true? all the chemical elements were created during the big bang, but some have been modified since that time as a result of radioactive decay. the earth formed quickly after the big bang. all the current stars in our galaxy formed about the same time billions of years ago. key elements of which earth and life are made, including carbon, oxygen, and iron, did not exist when the universe was born and were created later in stars.
Answers: 1
A fixed, stationary, or portable self-contained electrically illuminated utilization equipment is a(...
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