What is used to repair big brass band instruments

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?

The moats separating people from the animals are 5 m wide for lions and 4 m wide for the elephants. if the lion’s moat is 4 m deep, how deep should the elephants’ moat be?