1 cal= 4.18 J
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1 joule is 0,239 calories. so 515 x 0,239 = 123,085 calories
Ha. I think you mean kilojoules, which would be 1000.
190
Q (heat) = mass*Specific Heat*Temperature differenceI assume 2.5 * 101 Joules? or 25 J & 10 grams of substance?25 J = 10 grams * (SH) * (70-10oC)25 J =10 g *60oC * SHSH = 25 J/(10 g * 60oC)S.H. = 0.0417 J/gOC
The work done by the mountain climber can be calculated using the formula: work = force × distance × cos(θ), where θ is the angle between the force and the displacement. In this case, the force is 900N, the distance is 100m, and assuming the angle is 0 degrees (straight up), the work done would be 900N × 100m × cos(0°) = 900N × 100m × 1 = 90,000 Joules.