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Paladinen [302]
3 years ago
9

In a hospital setting, which of the following presents the possibility of being the source of an arc flash? A. Electrocautery De

vice B. Defibrillator C. Muscle Stimulation Electrodes D. Cauterization Tool
Physics
2 answers:
Umnica [9.8K]3 years ago
3 0
The answer to this question would be <span>Electrocautery Device

In a hospital, the device that can cause arc flash would be electrocautery device and circuit breaker. In fact, the electrocautery device uses the arc flash principle to work. The arc flash causing burns that surgeon use to clot bleeding in surgery or to destroy a tissue.</span>
Kamila [148]3 years ago
3 0

Answer:

B. Defibrillator

Explanation:

The electric arc occurs when there is a dielectric break in which it produces an electrical discharge. The term electric arc is the most common, but it can also be called an arc flash or short circuit as it is popularly called. This phenomenon is so strong that it can break the insulation made by air by conducting electrons from one electrode to another through a current flow.

A defibrillator is a device designed to discharge electrical charges to the chest wall (if external) or to the heart muscle fibers (if internal) of a patient with cardiac arrhythmia. Because of its ability to provide an electrical discharge, we can conclude that the defibrillator is a source of an electric arc in the hospital environment.

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Speed v = initial speed u + acceleration a x time t 
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3 years ago
If the briefcase hits the water 6.0 s later, what was the speed at which the helicopter was ascending?
vovikov84 [41]

Complete Question

In an action movie, the villain is rescued from the ocean by grabbing onto the ladder hanging from a helicopter. He is so intent on gripping the ladder that he lets go of his briefcase of counterfeit money when he is 130 m above the water. If the briefcase hits the water 6.0 s later, what was the speed at which the helicopter was ascending?

Answer:

The speed of the helicopter is u  =  7.73 \  m/s

Explanation:

From the question we are told that

   The height at which he let go of the brief case is  h =  130 m  

    The  time taken before the the brief case hits the water is  t =  6 s

Generally the initial speed of the  briefcase (Which also the speed of the helicopter )before the man let go of it is  mathematically evaluated using kinematic equation as

      s = h+  u t +  0.5 gt^2

Here s  is the distance covered by the bag at sea level which is zero

      0 = 130+  u * (6) +  0.5  *  (-9.8) * (6)^2

=>    0 = 130+  u * (6) +  0.5  *  (-9.8) * (6)^2

=>   u  =  \frac{-130 +  (0.5 * 9.8 *  6^2) }{6}

=>   u  =  7.73 \  m/s

     

7 0
3 years ago
Joanna wants to determine the speed of sound in xenon. When she plays a tone with a frequency of 440 Hz, the resulting sound wav
iVinArrow [24]

The speed of the sound in the xenon is 178 m/s. And the right option is b 178 m/s

<h3 /><h3>What is speed?</h3>

Speed can be defined as the ratio of the total distance traveled by a body to the total time taken.

To calculate the speed of the sound in the xenon, we use the formula below.

Formula:

  • v = λf............. Equation 1

Where:

  • v = Speed of the sound in xenon
  • f = Frequency
  • λ = Wavelength.

From the question,

Given:

  • f = 440 Hz
  • λ = 40.4 cm = 0.404 m

Substitute the values above into equation 1

  • v = 440(0.404)
  • v = 177.76 m/s.
  • v ≈ 178 m/s

Hence, The speed of the sound in the xenon is 178 m/s. And the right option is b 178 m/s

Learn more about speed here: brainly.com/question/4931057

7 0
2 years ago
29.5 inches is _______ meters. 74.9 74.9 11.6 11.6 0.749 0.749 0.116
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Answer:

0.749 m

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