When was the speed of light first accurately calculated?
a. when galileo and his assistants...
When was the speed of light first accurately calculated?
a. when galileo and his assistants uncovered lanterns at different hills and measured the time it took to see the light.
b. when roemer used the eclipsed moons of jupiter along with earth's orbit around the sun to compare different speeds over time.
c. when the hubble space telescope took the deep field pictures and measured how long to keep the aperture open to get the image.
d. when michelson used a rotating octagonal mirror to reflect light to a mirror on a distant mountaintop, which then reflected the light back to the rotating mirror and into an eyepiece.
Answers: 1
Chemistry, 22.06.2019 05:40, wanderer3653
Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3
Answers: 3
Chemistry, 22.06.2019 19:30, toriabrocks
If 16.00g of hydrogen gas reacts with 126.73g of oxygen, how many grams of water are yielded? (both reactants are completely consumed in the reaction.)
Answers: 2
Chemistry, 22.06.2019 21:50, SoccerAllStar2
Liquid from a brewery fermentation contains 10% ethanol and 90% water. part of the fermentation product (50,000 kg/h) is pumped to a distillation column on the factory site. under current operating conditions, a distillate of 45% ethanol and 55% water is produced from the top of the column at a rate of one-tenth that of the feed. what is the composition of the waste "bottoms" from the still?
Answers: 2