Recent content by kuin

hi, I may have used a bad formulation for my remark. yes. What I exactly meant is, say, lifting 1 kg up 1 meter and feel what it 'means' is easy, even for someone with zero science inclination. This is my real accurate data, 1 kg and 1 meter. For heat, it's already a little more...

I will, the more the better. But I will also stick to my idea, the reason being that for someone to imagine lifting a weight is possible, but to imagine producing heat is very difficult to do meaningfuly, with real accurate data to support the example. You have the example of rubbing your...

So, in the end, what I'm trying to do is to find a way to get a clear image of the energy used by a typical household over the course of 1 year. A north american typical household of 4 people uses around 10 000kwh every year. but it's hard to figure out what that means so I'm trying to...

ok, thanks for all the replies, I think I got a glimpse at something, the fog seems to be thinning out. So, is my understandng right if say : I attach a mass of 102 grams (0,102 kg) to a 1 meter long string that is wound around a shaft that turns a small electric generator. (assume a...

Hello, getting confused about watt vs watt.hour in the Watt's wiki page, an example is given on how to calculate wattage (power): So, (100kg x (9.81m/s2) x 3m) / 5s = 588 kg.m2/s3 this system needs aroud 600 watts of power to accomplish its task. ok. Then, lower in the page, an...