with the data for water of β = 3.04x10-4 and α = 4.52x10-5 atm-1 at 30 ° C and 1 atm calculate: (du / dp) t =

Which type of electromagnetic waves are dangerous enough to be used to kill cancerous cells? (a)gamma rays (b)visible light (c)infrared light (d)microwaves

15. give an example for some particles or waves that are moving faster than light in everyday life 16. what is a laser? 17. what is an oscilloscope? 18. what does it means practically that nothing is faster than light in vacuum? 19. what is vacuum?

When an object is heated it contracts. a. true b. false