Hamid is going to heat sodium chloride and water in a beaker. How can he carry out his experiment as safely as possible?
[4 marks]

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?

Drag the tiles to the correct boxes to complete the pairs. match the jobs with the education requirements. childcare director clinical psychologist concierge cosmetologist vocational school and state licensure arrowright on-the-job training arrowright a ph.d. with licensure or certification, depending on the state in which you live arrowright a bachelor’s degree in early childhood development arrowright

In the cores of extremely hot red giants, nuclear reactions convert helium to