John measures the mass of a 250-gram standard mass with a balance. John’s measure is 249.7 grams. What is the percent error of his balance? If he now measures a 1000-gram mass, what will the reading on the balance be?

Compare these two waves: the blue and orange waves have the same pitch, but the blue wave is louder. the blue and orange waves have the same volume, but the blue wave has a higher pitch. the orange wave has a higher pitch, but the blue wave is louder. the blue wave has a higher pitch, but the orange wave is louder.

He amount of carbon-14 present in animal bones t years after the animal's death is given by p(t)equals=upper p 0 e superscript negative 0.00012097 tp0e−0.00012097t. how old is an ivory tusk that has lost 26% of its carbon-14?

I’m stuck on this equation, anyone got the answer?