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A zinc-copper battery is constructed as follows at 25 degree C: Zn | Zn2+(0.15 M) || Cu2+(1.70 M) | Cu The mass of each electrode is 250. g. I found the cell potential to be 1.13V and the cell potential after 5.00 A of current has flowed for 8.00 h is 1.1...

A cylinder with radius of 20 ft is being filled with water at a rate of 2000 ft^3/hour. Find the rate at which the height of the water is increasing.

25% people in a group join a mountaineering activity,while the remaining 45 people do not join it. How many people are there in the group ?

what is the unit of thermal capacity?

i donot know

In a reaction the quantity of heat that raises the temperature of some substance by some amount the same quantity of heat can simulteneously raise the same temperature of a certain mass of water.The mass of water is then termed as water equivalent

Always draw a diagram to see what is happening. Using trigonometry: SOH is used sin(55)=opposite/hypotenuse =55m/hypotenuse Hyp(sin55) =55m Hyp= 55m/sin55 Hypotenuse= 67.14 metres (2 decimal places)

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