The closest approach distance between mars and earth is about 56 million km. assume you can travel in a spaceship at 58,000 km/h, which is the speed achieved by the new horizons space probe that went to pluto and is the fastest speed so far of any space vehicle launched from earth. how long would it take to get to mars at the time of closest approach?

Agas expands from an initial volume of 0.040 m^3 and an initial pressure of 210 kpa to a final volume of 0.065 m^3 while its temperature is kept constant. how much work is done by the system?

If a simple machine reduces the strength of a force, what must be increased?

Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.