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sesenic [268]
3 years ago
13

How does Dr.Hoffmann's ultrasound device benefit society? ( modern chemistry textbook page 180).

Chemistry
2 answers:
Masja [62]3 years ago
7 0
<span> She developed new models for emergency ultrasound education and competency assessment, created a successful emergency ultrasound fellowship program, and introduced electronic </span>workflow<span> solutions to </span>Hopkins<span>, increasing the use of emergency ultrasound by 7-fold.</span>
Karo-lina-s [1.5K]3 years ago
7 0

Answer:

In 1966, Dr. Hoffmann recorded for the first time in medicine embryonic movements and the heartbeat of the fetus using an ultrasound system.

Explanation:

Today, ultrasound is a technique widely used by many medical specialties, in the emergency department, in intensive care or in daily practice.

In 1794, the Italian Spallanzani observed that during the flight of bats they did not collide with anything despite being blind. It is then that he theorizes that they emitted sounds imperceptible to the man he would call ultrasounds, which they capture with their ears after bouncing off objects.

In 1842, Christian Doppler's first article on the effect of his name appears.

In 1912, Richardson suggests the use of ultrasonic echoes to detect submerged objects, creating the first ultrasonic generator five years later by Paul Langevin and Chilowsky.

Since then the applications of this new technology have been unstoppable, especially in medicine.

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100.mL of a .795 M solution of KBr is diluted to 500.mL. what is the new concentration of the solution?
kap26 [50]

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0.159 M

Explanation:

convert from mL to L then use the equation:

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3 years ago
A small hole in the wing of a space shuttle requires a 20.7-cm² patch.
cricket20 [7]

The Patch's area of the space shuttle in km² is 2.07 × 10⁻⁹ km²

Given, that a space shuttle requires a 20.7 cm² patch

We have to convert the patch's area from cm² into km².

Unit conversion is a method in which we multiply or divide with a particular numerical factor and then finally round off to the nearest significant digits.

Patch area of the space shuttle is 20.7 cm²

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or, 1 cm² = (0.00001 km)²

or,  1 cm² = 10⁻¹⁰km²

20.7 cm² = 20.7 ×  10⁻¹⁰km²

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The patch area in square kilometers is 2.07 × 10⁻⁹ km²

To learn more about unit conversion, visit: brainly.com/question/11543684

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