Cs-124 has a half-life of 30.8 s. (a) If we have 7.8 μg initially, how many Cs nuclei are present?

Aforce of 200 n is applied to an input piston of cross-sectional area 2 sq. cm pushing it downward 2.8 cm. how far does the output piston of cross-sectional area 12 sq. cm move upward? show all work.

Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane

Asap time is ! best answer gets compose at least one well-developed paragraph on the following: define the term concurrent powers, and give an example of a concurrent power of government.