If you test two samples and find that they both produce a red flame, what tool could be used to determine for sure whether they contain the same metal?

During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.

Why is the use of carbon-14 limited

When using the scientist method, which step comes last?