If you push a crate with 50N of force for 10 meters in 5 seconds how much power dis u use

What are the spectator ions in 2h+ + so42- + ca2+ + 2r → caso4 + 2h+ + 21?

Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass

The peak wavelength for the blackbody curve of a star is in the uv range. assuming the radiation from this star can reach earth, would you be able to see it?