The table shows the specific heat capacities of various substances. Which substance requires the least energy to heat it by 1°C? Enter your answer
Material
Specific heat capacity in J/kg °C
Water
4186
Copper
385
Concrete
850
Iron
450
Silver
233
Air
1005

Unpolarized light of intensity so passes through two sheets of polarizing material whose transmission axes make an angle of 60∘ with each other as shown in the figure. what is the intensity of the transmitted beam, st?

Blank liquids and gases exert a buoyant force on objects placed in them

30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve