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Sedaia [141]
3 years ago
5

A physical science test book has a mass of 2.2 kg what is the weight on mars??? please help

Physics
1 answer:
Nastasia [14]3 years ago
4 0
Weight = (mass) x (gravity)
             = (2.2 kg) x (3.7 m/s^2)

             = 8.1 newtons. (about 1.84 pounds)
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With an initial velocity of 20km per hour a car accelerated at 8m/s2 for 10s,what is the position of the car at the end of 10s
Dima020 [189]
  • initial velocity=u=20km/h=5.5m/s
  • Acceleration=a=8m/s^2
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\\ \sf\longmapsto s=ut+\dfrac{1}{2}at^2

\\ \sf\longmapsto s=5.5(10)+\dfrac{1}{2}(8)(5.5)^2

\\ \sf\longmapsto s=55+4(5.5)^2

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As for explaining the first model, there should be the same amount of + and - charges on the peanuts as well as the cat to show that it is balanced and the peanuts are not attracted or repelled by the cat.
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A lamp consumes 1000J of ekectrical energy in 10s. Calculate its power.​
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In designing circular rides for amusement parks, mechanical engineers must consider how small variations in certain parameters c
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Answer:

Part a)

dF = -\frac{mv^2}{r^2} dr

Part b)

dF = \frac{2mvdv}{r}

Part c)

dT = - \frac{2\pi r}{v^2} dv

Explanation:

Part a)

As we know that force on the passenger while moving in circle is given as

F = \frac{mv^2}{r}

now variation in force is given as

dF = -\frac{mv^2}{r^2} dr

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Part b)

Now if the variation in force is required such that r is constant then we will have

F = \frac{mv^2}{r}

so we have

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Part c)

As we know that time period of the circular motion is given as

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so here if radius is constant then variation in time period is given as

dT = - \frac{2\pi r}{v^2} dv

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