The recommended calcium intake for teenagers is 1300 mg per day. A glass of milk contains 306 mg of calcium. One glass contains a volume of 8 fluid oz. If one fluid oz equals 29.6 mL, how many liters of milk should a teenager drink per day to get the recommended amount of calcium?

your answers are a,b,,e and f

i hope this

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.

the answer is c i took the test