Given
v = 343 m/s
ac = 5g
ac = 5*9.8 m/s^2
ac = 49 m/s^2
where,
v: velocity
ac = centripetal aceleration
Procedure
We call the acceleration of an object moving in uniform circular motion—resulting from a net external force—the centripetal acceleration ac; centripetal means “toward the center” or “center seeking”.
Formula

The minimum radius not to exceed the centripetal acceleration is 2401 m.
A falling raindrop
Kinetic energy and potential energy are both applied when a body or object is falling.
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The technology that is involved with an ultrasound technologist include a diagnostic medical somographer and medical imaging technology.
<h3>Who is a ultrasound technologist?</h3>
It should be noted that an ultrasound technologist means an individual who uses specialized equipment to examine the human body.
The technology involves electromagnetic or sound waves as it used high. frequency sound waves to create images of the tissues in the body.
The basic properties of wave are wavelength, time period, frequency, speed and amplitude. The fundamental properties are reflection, refraction, diffraction, and interference.
The things needed for a ultrasound technologist include a degree in diagnostic medical sonography and a medical training in a hospital.
The advantages of this career include the fact that it offers job variety, there's job growth potential, and they earn a decent salary.
Learn more about ultrasound technologist on:
brainly.com/question/4256880
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Answer:
b. 20%
Explanation:
Efficiency of an engine is a ratio in percentage of the work done to the energy intake of the engine.
η=(Q₁-Q₂)/Q₁×100%
η is efficiency, Q₁ is the energy intake, Q₂ is energy wasted.
The information provided is:
Energy intake = 400 J
Work done = 80 J = (400-320) =Q₁-Q₂
Energy wasted =320 J
η= 80/400×100%
=20%