Recent content by andyg007

Thanks so much Cwatters/Simon - a great help :-) -- SUVAT Equations -- I know the following: (s) displacement = 10 meters (g) gravity = 9.81 m/s (t) time = 1 second (u) initial velocity = 0 I can therefore use: v2 = u2 + 2as v2 = 0x2 + 2 x 9.81m/s x 10 meters =...

I'm thinking this is the amount of time it takes to falls in 1 second and therefore the speed.

Homework Statement What am I doing wrong here? Given the following two formulas for Kinectic Energy (KE) and Potential Energy (PE): PE = mgh KE = 1/2mv2 If a 10KG weight was lifted 10 meters above sea level - I calculate its PE as: PE = 10kg x 9.81m/s x 10meters = 981 Joules If I let the...

Hi Ali - your spot on. Btw what does the 'ro' part stand for in the P=ro*g*H? Thanks for replying :-)

Thanks very much for your replies :-)

Thanks for your reply Simon - its a homework question. My thoughts were the same i.e. an air compressor would require at least the same amount of energy as manually pushing down. I am wanting to understand how efficient air compressors are and try to calculate the amount of energy needed. Any...

How much energy is required to inflate a volume of 102,102cm3 with ambient air at 5cm below the surface of a water tank. The surface of the water tank is 8 meters above sea level. The object to inflate is a rubber cylinder which has a diameter of 50cm and 52cm in length with 0 resistance from...

Hello - looking forward to collaborating and learning as much as I can. I have a passion for physics and an keen to learn more particularly in the areas of water/air pressures and energy calculations. Cheers Andy. PS. I also have a passion for James Bond movies