Question

complete the workbook exercises of lesson1 (the fun they had) 9ENGLISH ​

Answer 1

Answer:

Are you mad brother

The density of a solid ball is determined in an experiment the diameter of ball is measured with a screw gauge whose pitch is 0.5 mm and there are 50 divisions on the circular scale. the reading on the main scale is 2.5 mm and that on the circular scale is 20 divisions if the measured mass of the ball has a relative error of 2% the relative percentage error in density is?

Answer 2

Answer:

Answer: 56.44 km/h

Step-by-step explanation:

Speed = Distance / Time

Time = 1950 - 1520 = 4 hours 30 minutes = 4.5 hours

Speed = 254/4.5

= 56.44 km/h

Explanation:

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