A few nuclear reactors make use of molten sodium as the coolant and moderator. Natural 2. sodium consists entirely of Na. (a) What is & for this isotope? (b) On average, how many collisions would be needed to reduce the energy of a 2 MeV fast neutron to 0.0024 eV?

Q: 56-60. Find the magnitude and direction using law of sines and cosines. 3. B. 7.0N A. 5.ON R 9.0 N

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A: Solution:-Given thatF=630 N

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Q: Calculate the resultant force. Express the answer in terms of unit vector. F = 2.0 N, 20° N of W F,…

A: Let us write down the forces in vector form as- F1→=2.0 N-cos20oi^+sin20oj^F2→=10.5 N-j^F3→=18…

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A: Vectors have both magnitude (size) and direction. Consider toward right as positive and toward left…

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Q: 33

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Q: 65. Find the angles that vector D = (2.01 – 4.0j +k)m makes with the x-, y-, and z- axes.

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Q: 4. Write each combination of vectors as a single vector. See figure below. (a) PQ+QR (b) RP+ PS (c)…

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A: As we know slope of position time graph gives velocity of the body.

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Q: Six vectors are shown below. ン Select all vectors which have the same magnitude.

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A: Distance is the actual length of path  Displacement is shortest length

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Q: F. cos 0 ·d =

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Q: Part C Enter the expression -20 + 6D in the answer box using the notation just described. Express…

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A: Given a hydrogen emission spectrum and we have to find out the reason for red colour emission.

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Q: X 3. Calculate the coordinate direction angles of vector Q. Z 72° 36° Q = 300 lb y

A: