Physics, 20.11.2019 06:31, lilsnsbsbs
Marc attaches a falling 500-kg object with a rope through a pulley to a paddle wheel shaft. he places the system in a well-insulated tank holding 25 kg of water. when the object falls, it causes the paddle wheel to rotate and churn the water. if the object falls a vertical distance of 100 m at constant speed, what is the temperature change of the water? (1 kcal = 4 186 j, the specific heat of water is 4 186 j/kgc, and g = 9.8 m/s2)
Answers: 2
Physics, 21.06.2019 22:00, penaabel6202
Which units can be used to measure length or distance? check all that apply. gram meter kilometer liter inch
Answers: 1
Physics, 21.06.2019 23:30, hardwick744
Which lists the main components of darwin’s theory of evolution? a. random mutations drive evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms do not change. b. natural selection drives evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms change over time. c. natural selection drives evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms change over time. d. random mutations drive evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms do not change.
Answers: 1
Physics, 22.06.2019 14:00, Amrinderkhattra
Give an example of a collision in real life. use the law of conservation of energy to describe the transfer of momentum. be sure and discuss the momentum before and after the collision occurs. you will need at least 3 sentences to thoroughly answer this question.
Answers: 1
Physics, 22.06.2019 21:50, WampWamp8751
Determine the moment of the force f about an axis extending between a and c. express the result as a cartesian vector. a is at the origin, c is at (4,3,0) and f = (4i + 12j -3k) lb coming out of b (4,3,-2).
Answers: 2
Marc attaches a falling 500-kg object with a rope through a pulley to a paddle wheel shaft. he place...
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