3 AAMC 11 PS questions

[Joker88]

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43. What causes an object to experience an artifical gravitational acceleration in the rotating space station?

B. the object's propensity to move in a straight line while the space station forces it onto a curved path

--I think i got tripped by the wording. AAMC 11 definitely rattled me a bit. Are they just trying to address the topic of acceleration pointing inwards when subjected to a centripical force?

46. Which of the following best explains what happens at the molecules level to the supporting pillars as the water level in the storage tank rises?

C. The increasing weight of the tank pushes the molecules in the pillars closer together along the vertical direction, making the pillars shorter.

--Are they just saying the increase in mass is just going to make the pillars squat? It seems like such a logical answer but during the test i just got so confused by the wording.

49. What is the total force on the pillars when the tank contains 10m^3 of water? Tank weight 9500N

C. 109,500N

They used pVg on this question. How did they know to use archimedes on a question like this? Ive never seen it really used in this context before. Usually an object is IN the water when subjected to pVg

 

[MT Headed]

43. What causes an object to experience an artifical gravitational acceleration in the rotating space station?

B. the object's propensity to move in a straight line while the space station forces it onto a curved path

--I think i got tripped by the wording. AAMC 11 definitely rattled me a bit. Are they just trying to address the topic of acceleration pointing inwards when subjected to a centripical force?

👍

46. Which of the following best explains what happens at the molecules level to the supporting pillars as the water level in the storage tank rises?

C. The increasing weight of the tank pushes the molecules in the pillars closer together along the vertical direction, making the pillars shorter.

--Are they just saying the increase in mass is just going to make the pillars squat? It seems like such a logical answer but during the test i just got so confused by the wording.

Welcome to the MCAT.

49. What is the total force on the pillars when the tank contains 10m^3 of water? Tank weight 9500N

C. 109,500N

They used pVg on this question. How did they know to use archimedes on a question like this? Ive never seen it really used in this context before. Usually an object is IN the water when subjected to pVg

Don't focus on Archie's principle, just answer the question.

water force = water weight = mg = (pV)g

since density = mass / volume, mass = density x volume

 

[indianjatt]

43. What causes an object to experience an artifical gravitational acceleration in the rotating space station?

B. the object's propensity to move in a straight line while the space station forces it onto a curved path

--I think i got tripped by the wording. AAMC 11 definitely rattled me a bit. Are they just trying to address the topic of acceleration pointing inwards when subjected to a centripical force?

46. Which of the following best explains what happens at the molecules level to the supporting pillars as the water level in the storage tank rises?

C. The increasing weight of the tank pushes the molecules in the pillars closer together along the vertical direction, making the pillars shorter.

--Are they just saying the increase in mass is just going to make the pillars squat? It seems like such a logical answer but during the test i just got so confused by the wording.

49. What is the total force on the pillars when the tank contains 10m^3 of water? Tank weight 9500N

C. 109,500N

They used pVg on this question. How did they know to use archimedes on a question like this? Ive never seen it really used in this context before. Usually an object is IN the water when subjected to pVg

I don't know how the passage is like, but I would just do a normal force diagram. Since the pillar and tank is stationary, Fnet = 0. The force downwards on the pillar is the sum of the force of the tank downwards and the water in the tank. So, (1000kg/m^3)(10m^3)(10m/s^2) + 9500N.