A simple wheel and axle is used to lift a bucket of water out of a well. the radii of the wheel and axle are 20cm and 4cm, respectively. determine a) the theoreical effort required to lift a load of 30 N assuming no energy loss b) the efficiency if the actual effort required is 10 N

less than one you can't create energy

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.