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bija089 [108]
3 years ago
12

If x=450 mm, determine the mass of the counterweight s required to balance a 90-kg load, l.

Physics
1 answer:
dmitriy555 [2]3 years ago
3 0
<span>The platform scale consists of a combination of third and first class levers so that the load on one lever becomes the effort that moves the next lever.Through this arrangement, a small weight can balance a massive object. If x=450 mm,determine the required mass of the counterweight S required to balance a 90-kg load, l.</span>
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The frequency of a wave is 200 Hz. The wavelength is 0.1 m. What is the period of the wave?
Aleks04 [339]
The formula for the period of wave is: wave period is equals to 1 over the frequency.waveperiod=\frac{1}{frequency}
To get the value of period of wave you need to divide 1 by 200 Hz. However, beforehand, you have to convert 200 Hz to cycles per second. So that would be, 200 cyles per second or 200/s.
By then, you can start the computation by dividing 1 by 200/s. Since 200/s is in fractional form, you have to find its reciprocal form and multiply it to one which would give you 1 (one) second over 200. This would then lead us to the value 0.005 seconds as the wave period.

wave period= 1/200 Hz
Convert Hz to cycles per second first
200 Hz x 1/s= 200/second
Make 200/second as your divisor, so:

wave period= 1/ 200/s

get the reciprocal form of 200/s which is s/200

then you can start the actual computation:

wave period= 1 x s divided by 200

this would give us an answer of 0.005 s. 
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Answer:

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       Inner planets:
                 Mercury
                 Venus
                 Earth
                 Mars

       Outer planets:
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                 Uranus
                 Neptune
            
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3).  Mercury & Venus ... no moons
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4).  Mercury ... cratered, no atmosphere
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8).  Saturn has the famous rings, that you can almost see
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9).  Included in #6.

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11).  Just about every language has its own name for each planet.

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13).  "Jovian" means "like Jupiter".
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