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harkovskaia [24]
3 years ago
7

A 2kg body is moving a long a horizontal circular path of radius 2m with constant speed of 6m/s . what is the magnitude of the f

orce acting on the body ? ​
Physics
1 answer:
kondor19780726 [428]3 years ago
7 0
The magnitude of force acting on the body is 36N
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How many neutrons does element X have if its atomic number is 23 and its mass number is 90?
givi [52]

Answer:

67

Explanation:

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4 0
4 years ago
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A silver wire has a cross sectional area a = 2.0 mm2. a total of 9.4 × 1018 electrons pass through the wire in 3.0 s. the conduc
marta [7]
This problem uses the relationships among current I, current density J, and drift speed vd. We are given the total of electrons that pass through the wire in t = 3s and the area A, so we use the following equation to to find vd, from J and the known electron density n, so: 

v_{d} =  \frac{J}{n\left | q \right |}

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The magnitude of the current density is:

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Finally, for the drift velocity magnitude vd, we find:

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