Oxygen-19 has a half-life of 29.4 seconds. How long would it take for a 1200g sample to decay to 20g? Round to 2 decimals. j

What royal scientist used the 29th day of frozen vapor to encounter elements for mastering new culinary creations?

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled