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7nadin3 [17]
3 years ago
8

Grace runs 6miles in 2 hours what is her speed??

Chemistry
2 answers:
Alisiya [41]3 years ago
6 0

Answer:

3 miles/hr

Explanation:

This is a distance-rate-time problem, so we need to use the equation: d = rt, where d is the distance, r is the rate, and t is the time.

Here, the distance is 6 miles, so d = 6. The time is 2 hours, so t = 2. Plug these in to find r:

d = rt

6 = 2r

r = 6/2 = 3

Grace's speed is thus 3 miles/hr.

Hope this helps!

MAXImum [283]3 years ago
3 0
Speed = miles / time
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According to the law of conservation of energy, the sum of the heat absorbed by water (Qw) and the heat released by the coffee (Qc) is zero.

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mw × 29.0°C = 163 g × 43.9°C

mw = 247 g

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247 g × (1 mL/0.997 g) = 248 mL

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