Calculate the potential difference across a 25-Ohm. resistor if a 0.3-A current is flowing through it. V

7.5V

Explanation:

Ohm's law, V=IR

so, V=0.3×25

V=7.5V

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19

e/c, where e is its total energy