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Amanda [17]
3 years ago
14

A salmon jumps up a waterfall 2.4 m high. With what minimum speed did the salmon

Physics
1 answer:
krek1111 [17]3 years ago
8 0
Answer: D. 6.9 m/s

Explanation: The minimal velocity needed is when we have only vertical motion, then i will think in the problem only in one axis.
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Answer:

  k_max = 31.82 w/mk

  k_min  = 17.70 w/mk

Explanation:

a) the maximum thermal conductivity is given as

k_{max} = k_m*v_m + k_p*v_p

where k_m is thermal conductvitiy of metal

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v_m = proportion of metal in the cement = 0.17

v_p = proportion of carbide in the cement = 0.83

            = 66*0.17 + 28*0.83

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b) the minimum thermal conductivity is given as

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          = \frac{28+66}{28*0.17 +66*0.83}

       k_min  = 17.70 w/mk

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