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Daniel [21]
3 years ago
13

A boat has a velocity of 5m/s North with respect to a river. It aims to reach point A, directly north across the river, which is

40 m wide. However, because of the river speed it reaches another point
b. If the speed of the current is 2m/s to the east, calculate the time of the trip and the distance between points A and
b.
Physics
1 answer:
Juli2301 [7.4K]3 years ago
6 0
What are the answer

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Explanation:

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Two identical small charged spheres hang in equilibrium with equal masses (0.02kg). The length of the strings is equal (0.18m) a
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Answer:

The value is q = 3.4 *10^{-6} \ C

Explanation:

From the question we are told that

    The mass of each sphere is m_1 = m_2  = m  =  0.020 \ kg

     The length of the string is  l = 0.18 \  m

     The angle of with the vertical is \theta  =  7^o

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Generally the force acting between the forces is mathematically represented as

       F  =  T cos \theta =  \frac{k*  q^2}{ r^2}

=>     T cos \theta =  \frac{k*  q^2}{ r^2}

Generally from Pythagoras theorem the radius of the circular curve created by the force is

         r = 2 L sin (\theta )

=>      r = 2* 0.180 sin (7)

=>      r = 0.043 \ m  

=>     q = tan \theta * \frac{m * g * r^2 }{k}

=>      q = tan(7)* \frac{ 0.02 * 9.8 * 0.043^2 }{9*10^{9}}

=>      q = 3.4 *10^{-6} \ C

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What is the unit of work? *<br> A. Joule<br> B. Newton/meter<br> C. Watt<br> D. All of the above
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A! I already went through this unit. Joule.

Explanation:

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3 years ago
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HELP ME please
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Ruko zara kuch Time dedo na please

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