3. Convert the following values to the unit given a) 0.78 Mg to g b) 74.95kmarrow m d) 765374 000 mA to A c) 457500mu sarrow s

a) To convert megagrams (Mg) to grams (g), we need to know that 1 megagram is equal to 1,000,000 grams. Therefore, to convert 0.78 Mg to grams, we multiply 0.78 by 1,000,000.0.78 Mg * 1,000,000 = 780,000 gSo, 0.78 Mg is equal to 780,000 grams.b) To convert kilometers (km) tom), we know that 1 kilometer is equal to 1,000 meters. Therefore, to convert 74.95 km to meters, we multiply 74.95000.74.95 km * 1,000 = 74,950 mSo, 74.95 km is equal to 74,950 meters.c) To convert microseconds (μs) to seconds (s), we need to know that 1 microsecond is equal to 0.000001 seconds. Therefore, to convert 457,500 μs to seconds, we multiply 457,500 by 0.000001.457,500 μs * 0.000001 = 0.4575 sSo, 457,500 μs is equal to 0.4575 seconds.d) To convert milliamperes (mA) to amperes (A), we need to know that 1 milliamperes is equal to 0.001 amperes. Therefore, to convert 765,000 mA to amperes, we multiply 765,374,000 by 0.001.765,374,000 mA * 0.001 = 765,374 ASo, 765,374,000 mA is equal to 765,374 amperes.