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My name is Ann [436]

2 years ago

9

A metre rule is used to measure a length Which reading is shown to the nearest millimetre? A 0.7 m B 0.76 m с 0.761 m D 0.7614 m

1 answer:

melomori [17]2 years ago

5 0

Answer:A

Explanation:because the smallest measurement is nearest to millimeter so on choose A. 0.7m is the small.

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A team of eight dogs pulls a sled with waxed wood runners on wet snow (mush!). The dogs have average masses of 18.5 kg, and the

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Answer:

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Explanation:

We are given that

Mass of each dog,M=18.5 kg

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By Newton's second law

$8F-f=(8M+m)a$

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$T=ma+\mu_s mg$

Substitute the values

$T=250\times 2.86+0.14(250)(9.8)=1058 N$

Hence, the force in the coupling between the dogs and the sled=1058 N

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