Aclosed box has two metal terminals a and b. the inside of the box contains an unknown emf 8 in series with a resistance r. when a potential difference of 22.0 v is maintained between terminal a and terminal b, there is a current of 1.50 a between the terminals a and b. if this potential difference is reversed, a current of 1.90 a in the reverse direction is observed. find epsilon and r.

The roller coaster from problem #1 then tops a second hill at 15.0 m/s, how high is the second hill? 91.5 m 79.2 m 80.0 m 68.5 m

Will give brainliest! which statement best describes the difference between strong nuclear forces and weak nuclear forces? weak nuclear forces are involved when certain types of atoms break down. strong nuclear forces are responsible for holding atoms' nucleus together. weak nuclear forces hold bonds between atoms together. strong nuclear forces hold together the nucleus of an atom. strong nuclear bonds prevent atoms from falling apart. weak nuclear bonds prevent compounds from falling apart. strong nuclear forces are involved in breaking electrons from their shells. weak nuclear forces hold protons in the nucleus.

The cerebellum controls? thirst sensations sleep-wake cycles hand-eye coordination heart rate and pulse