An astronaut in her space suit has a total mass of 87.0 kg, including suit and oxygen tank. Her tether line loses its attachment to her spacecraft while shes on a spacewalk. Initially at rest with respect to her spacecraft, she throws her 12.0-kg oxygen tank away from her spacecraft with a speed of 8.00 m/s to propel herself back toward it (Fig. P6.25). (a) Determine the maximum distance she can be from the craft and still return within 2.00 min (the amount of time the air in her helmet remains breathable). (b) Explain in terms of Newtons laws of motion why this strategy works.
Runoff and Watershed AFTER A PRECIPITATION EVENT 1. Accumulation: water that reaches the surface and compounds. This is typically seen in snowfall. If accumulation is persistent and climate conditions are optimum, accumulation can lead to massive ice caps, over geological time. 2. Absorption: water penetrating the terrestrial surface to be stored as groundwater or used by the biome 3. Runoff: movement of excessive water movement downhill, with greatest efficiency (Water’s behavior will be determined by various factors including infiltration capacity, slope, volume, biome characteristics, etc.) Hydrogeology Streamflow: groundwater that is discharged into a stream or river system. Movement of water into a stream Base flo
