Plz, guys answer 20 and 21. it's urgent
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Answers: 3
Physics, 22.06.2019 02:00
How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?
Answers: 3
Physics, 22.06.2019 12:00
Lacie kicks a football from ground level at a velocity of 13.9 m/s and at an angle of 25.0° to the ground. how long will the ball be in the air before it lands? how far will the football travel before it lands?
Answers: 1
Physics, 23.06.2019 00:30
Madison lives near the ocean. she’s formed a hypothesis that increased concentrations of salt in the air speeds the corrosion of certain metals. if madison plans to test this hypothesis, she will have to deal with the following variables in her experiment: dependent variable: independent variable: one possible confounding variable:
Answers: 1
Physics, 23.06.2019 02:00
Provides most of the energy used in the world today. question 4 options: wind fossil fuel moving water sunlight
Answers: 1
Chemistry, 10.07.2019 17:00
Chemistry, 10.07.2019 17:00
Mathematics, 10.07.2019 17:00
History, 10.07.2019 17:00
Mathematics, 10.07.2019 17:00
History, 10.07.2019 17:00
Social Studies, 10.07.2019 17:00
Chemistry, 10.07.2019 17:00