Evaluation

Input	Output
In contrast to the liquid rocket in Fig. P3.34, the solid-propellant rocket in Fig. P3.35 is self-contained and has no entrance ducts. Using a control-volume analysis for the conditions shown in Fig. P3.35, compute the rate of mass loss of the propellant, assuming that the exit gas has a molecular weight of 28. <image 1> (A) -10.0 kg/s (B) -11.8 kg/s (C) -12.4 kg/s Answer with the option's letter from the given choices directly. No punctuation.	Google: Gemini Pro Vision 1.0 mmmu / Energy_and_PowerPublic C Expected Answer: B Difficulty: Hard Subfield: Fluid Mechanics

Input

Output

In contrast to the liquid rocket in Fig. P3.34, the solid-propellant rocket in Fig. P3.35 is self-contained and has no entrance ducts. Using a control-volume analysis for the conditions shown in Fig. P3.35, compute the rate of mass loss of the propellant, assuming that the exit gas has a molecular weight of 28. <image 1>

(A) -10.0 kg/s

(B) -11.8 kg/s

Answer with the option's letter from the given choices directly. No punctuation.

Google: Gemini Pro Vision 1.0

mmmu / Energy_and_PowerPublic

Expected Answer: B

Difficulty: Hard

Subfield: Fluid Mechanics

Evaluation ID: c5ec9212-d27e-472b-a7f0-bd0569db5466
Created: February 21, 2024

Raw Output

{
  "id": "gen-xEeuKqsGQg7fnjNfzprrcNMRCNW4",
  "model": "google/gemini-pro-vision",
  "choices": [
    {
      "message": {
        "role": "assistant",
        "content": " C"
      },
      "finish_reason": "STOP"
    }
  ],
  "object": "chat.completion",
  "created": 1708556830,
  "usage": {
    "prompt_tokens": 1596,
    "completion_tokens": 4,
    "total_tokens": 1600
  }
}