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labwork [276]
3 years ago
15

How many joules are in 148 calories? (1 cal = 4. 18 j).

SAT
1 answer:
raketka [301]3 years ago
5 0

Answer:

618.64 j

Explanation:

148 calories = 148*4.18 j = 618.64j

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A canoe can be paddled at 7 mph through a placid lake the stream flows at 3 mph
malfutka [58]

Using system of linear equations the distance at the fisherman and the bobbler meets ls 8 miles

Speed in still waters = 7 mph

Stream speed = 3 mph

Upstream speed of canoe = 7 - 3 = 4 mph

<em>Distance</em><em> </em><em>between</em><em> </em><em>fisherman</em><em> </em><em>and</em><em> </em><em>bobbler</em><em> </em><em>=</em><em> </em><em>14</em><em> </em><em>miles</em><em> </em>

Let seperation distance = d

Meeting distance = 14 - d

<u>using the relation</u> :

<em>Distance= (speed × time)</em>

canoe distance , <em>d = </em><em>4t</em><em> </em><em>-</em><em> </em><em>-</em><em> </em><em>-</em><em> </em><em>-</em><em> </em><em>(</em><em>1</em><em>)</em>

Noobler distance = <em>14 - d = 3t </em><em>-</em><em>-</em><em>-</em><em>-</em><em>(</em><em>2</em><em>)</em>

Equate (1) and (2)

d/4 = (14 - d)/3

3d = 4 (14 - d)

3d = 56 - 4d

7d = 56

d = 8 miles

Hence, the distance is 8 miles

Learn more : brainly.com/question/25281514

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a 7.298 g sample of copper reacts completely with oxygen, forming a copper oxide. the final mass of the copper oxide is 8.217 g.
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