Physics, 30.12.2019 01:31 makaylahunt
Scientists launch a rocket, and they monitor its acceleration and the force exerted by its engines. as the rocket gets higher, the monitors show that the acceleration of the rocket is increasing but the force exerted stays the same. how do newton’s laws explain why the scientists could expect this to happen
a) the total force stays the same, but the action force is increasing as the reaction decreases.
b) the mass of the rocket decreases as fuel is burned, so the acceleration increases.
c) the inertia of the rocket increases, which reduces the force needed to change its speed.
d) the reaction force is increasing as fuel is burned, which causes a greater acceleration.
Answers: 1
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Choose each of the settings that follow and list them below do it ill mark brainliest first object= position= speed= acceleration= second object= position= speed= acceleration=
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Asteel tube (k=50 w/mk) of inner and outer diameter di = 20mm and do=26mm, respectively, is used to transfer heat from hot gases flowing over the tube (h-hot = 200w/m2k) to cold water flowing through the tube (h-cold = 8000 w/m2k). what is the cold-side overall heat transfer coefficient uc? to enhance heat transfer 16 straight fins of rectangular profile are installed longitudinally along the outer surface of the tube. the fins are equally spaced around the circumference of the tube, each having a thickness of 2mm and a length of 15mm. what is the corresponding overall heat transfer coefficient uc? *solve for uc in both cases*
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Scientists launch a rocket, and they monitor its acceleration and the force exerted by its engines....
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