Which statement below is the most accurate description of carbon dioxide levels in the atmosphere over the past few decades?
a. carbon dioxide levels have remained the same.
b. carbon dioxide levels have decreased.
c. carbon dioxide levels have increased.
d. carbon dioxide levels cannot be measured.

We put a force of 50n on an object and the acceleration is 100 m/s². what is the mass of the object?

4. a 75.0 g piece of ag metal is heated to and dropped into 50.0 g of water at the final temperature of the mixture is what is the specific heat capacity of silver? 5. a 465 g chunk of iron is removed from petrucci, ralph h.. general chemistry (p. 290). pearson education. kindle edition.

Which of the following changes will increase the capacitance of a parallel-plate capacitor? (there could be more than one correct choice.) a) increase the charge on the plates b) decrease the poten5al between the plates c) increase the potential between the plates d) introduce a dielectric material between the plates e) decrease the separation between the plates