What is the function of a measurement tray on a triple beam balance

A100-watt light bulb radiates energy at a rate of 100 j/s. (the watt, a unit of power or energy over time, is defined as 1 j/s.) if all of the light emitted has a wavelength of 525 nm , how many photons are emitted per second?

Neils bohr believed that electrons orbited the nucleus in different energy levels, based on strong support from

The excretory system,need answers for all: )