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3 years ago

15

Why the unit of power is called derived unit?

1 answer:

Lilit [14]3 years ago

7 0

A :-) it was given the name Newton (N). from this, the derived unit of energy (or work) is defined ,as the work produced when the unit of force causes a displacement equal to the unit of length of its point of application along its direction . It was given the name Joule (J).

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An accelerometer has a damping ratio of 0.5 and a natural frequency of 18,000 Hz. It is used to sense the relative displacement

SOVA2 [1]

Answer:

A) i) Dynamic error ≈ 3.1%

ii) phase shift ≈ -12°

B) 79971.89 rad/s

Explanation:

Given data :

Damping ratio = 0.5

natural frequency = 18,000 Hz

<u>a) Calculate the dynamic error and phase shift in accelerometer output at an impart vibration of 4500 Hz</u>

i) Dynamic error

This can be calculated using magnitude ratio formula attached below is the solution

dynamic error ≈ 3.1%

ii) phase shift

This phase shift can be calculated using frequency dependent phase shift formula

phase shift ≈ -12°

<u>B) Determine resonance frequency </u>

Wr = 2 $\pi$ ( 18000 $\sqrt{0.5}$ ) = 79971.89 rad/s

C) The maximum magnitude ratio that the system can achieve

3 0

3 years ago

Please show work and tell me how you did it.

Ilya [14]

Explanation:

1) speed of bicycle = $\frac{distance}{time}$

speed of bicycle= $\frac{20}{2}$

speed of bicycle = 10 miles/hour

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speed of rocket= 742.57 meter/second

3)speed of jet plane = $\frac{distance}{time}$

speed of jet plane= $\frac{528}{4}$

speed of jet plane= 132 meter/second

4)speed = $\frac{distance}{time}$

time = $\frac{distance}{speed}$

time of trip= $\frac{350}{80}$

time of trip = 4.375 hour

5) Distance = speed × time

Distance = 6 × 3 × 60

Distance = 1080 meter

6) Average speed = $\frac{total distance}{total time}$

Average speed = $\frac{816}{10}$

Average speed = 81.6 km/hour

7) Time = $\frac{Distance}{speed}$

Time = $\frac{450 \times 1000}{120}$

Time = 3750 m/s

4 0

3 years ago

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marshall27 [118]

Explanation:

force , motion , electric current

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3 years ago

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Marianna [84]

2 and 3 I just took the test

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4 years ago

Two-fifths of a number is 23.2, find

julia-pushkina [17]

Answer:

58.0

Explanation:

if you take 2/5 of 58.0 you get 23.2

3 0

3 years ago