Calculate the magnitude of the electrostatic force between a + 8.0μC charged particle and a + 9.0μC charged particle separated by 0.5 cm. (Hint: μ is 10-6 and c is 10-2)

    5.5 n======    assuming that      we have      m = 0.145 kg    a = 38 m/s²therefore    5.51 n, but two significant figures.final answer: 5.5 n

Sound energy is produced when an object vibrates. examples are 1- a balloon popping2-a whistle3- a waterfall

Each student aligns the edge of the object with the left edge of the ruler as shown above. all four students read the ruler with a measurement of 4.6 cm. which statement describes the data they collect? i believe the answer is: the data have poor precision and poor accuracy because of a systematic error.