Physics, 29.07.2019 14:00, Mathmatician22
Veins contain a network of valves to insure a one-way flow of blood but arteries do not. this is because veins must counteract the force of on blood flow.
Answers: 2
Physics, 22.06.2019 02:30, scasemere
Mass (kg) force (n) 5 25 10 50 15 75 20 100 a student was trying to find the relationship between mass and force. he placed four different masses on a table and pulled them using a spring scale. the table shows the different masses used in the experiment and the force required to pull each mass. the student concluded that more force was required to pull heavier objects. what comment would you make regarding his conclusion? a) no clear relation can be observed between mass and force from the data. b) there is a direct proportion between the mass and force listed in the table. c) gravity should have been taken into account while performing the experiment. d) there is an inverse proportion between the mass and force listed in the table.
Answers: 2
Veins contain a network of valves to insure a one-way flow of blood but arteries do not. this is bec...
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