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Cerrena [4.2K]
3 years ago
11

Who pioneered the use of galvanoplastic compounds for preserving footprints and ballistics?

Physics
2 answers:
GarryVolchara [31]3 years ago
7 0

Answer:

D. Alphonse Bertillon

(confirmed for Edmentum courses)

Explanation:

"Alphonse Bertillon (1853-1914): He was a French policeman and biometrics researcher. Bertillon created forensic techniques like forensic document examination. <u><em>He also pioneered the use of galvanoplastic compounds as molds for footprints and ballistics in order to preserve evidence.</em></u> Bertillon also created a system based on photographs of the same person over time to study physical differences with age."

(edited to add image)

alukav5142 [94]3 years ago
5 0

Answer:

Option D (Alphonse Bertillon) is the correct response.

Explanation:

  • He seems to have been a policeman turned biometrics expert from France. Forensic techniques such as forensic record analysis were developed by Bertillon.
  • To retain proof, he always pioneered or developed the use of such galvanoplastic compounds as molds for footsteps as well as ballistics. To research physical changes with age, Bertillon has developed a method focused on images of almost the same person’s performance.

All those other choices weren’t connected to the instance offered. So, the best one is the one described.

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Two identical resistors are connected in parallel across a 26-V battery, which supplies them with a total power of 7.1 W. While
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Answer:

A) R = 190.42 Ω

B) P = 5.325 W

Explanation:

We are given;

Total power;P_tot = 7.1 W

Voltage;V = 26 V

A)We are told that while the battery is still connected, one of the resistors is heated, so that its resistance doubles.

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Now, formula for power is;

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R = (2 × 26²)/7.1

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Formula for power in this context is;

P = V²/R

Thus,

Total power delivered to the resistors is;

P = V²/R + V²/2R

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