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3 years ago

14

Sarah cycles 30 miles to her grandmother’s house at a steady speed of 10 mph. If she leaves home at 2:00 pm, what time will she

arrive?

1 answer:

AfilCa [17]3 years ago

8 0

Answer:

5:00p.m

She is traveling 30 miles and moves 10 miles for each hour therefore 30/10=3

This means she cycled for 3 hours adding this to our time we then have 5p.m

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A weight lifter is trying to do a bicep curl with a weight of 300 N. At the "sticking point", the moment arm of this weight is 3

lesantik [10]

Answer:

The weight lifter would not get past this sticking point.

Explanation:

Generally torque applied on the weight is mathematically represented as

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So Elbow Torque is $T_e= 4000 * 0.02$

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To obtain the torque required we substitute 300 N for F and 30cm $=\frac{30}{100} = 0.3 m$

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3 years ago

What must crystalline solids have

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3 years ago

Increase 90 in the ratio 6 : 5

Jobisdone [24]

Answer:

<em>108</em>

Explanation:

<u>Proportions </u>

Two quantities are proportional when one of them can be obtained by multiplying or dividing the other by a constant value. For example, knowing the price of one pencil as p, we can know the cost of purchasing X pencils as C=p.X

We are required to increase 90 by the ratio 6:5. The new value will be proportional to the original because we'll compute the product of

$\displaystyle 90\ \frac{6}{5}=108$

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3 years ago