Physics, 19.07.2019 03:00 hjeffrey168
Why do you think the chemical reactions lab we did is typically called a "copper plating lab"? a. because the acid solution cleaned the pennies and made the copper look shinier. b. because the acid solution cleaned the paperclips and made them look like pennies c. because the copper from the pennies was removed, and then added to the paperclips. d. because the copper from the paperclips was removed, and then added to the pennies.
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Physics, 22.06.2019 04:30
Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.
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Physics, 22.06.2019 05:00
Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct
Answers: 1
Physics, 22.06.2019 13:50
9.98 kg of r-134a at 300 kpa fills a rigid container whose volume is 14 l. determine the temperature and total enthalpy in the container. the container is now heated until the pressure is 600 kpa. determine the temperature and total enthalpy when the heating is completed. use data from the steam tables.
Answers: 1
Physics, 22.06.2019 14:30
Slab pull” is a type of tectonic plate movement that occurs due to the forces of mantle convection and results in the subduction of the lithosphere true or false
Answers: 2
Why do you think the chemical reactions lab we did is typically called a "copper plating lab"? a....
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