Calculate the effort when a load of 72 N is raised using a block and tackle system of 5 pulleys and efficiency 80%.
A. 11.52N
B. 18N
C. 57.6N
D. 288N

4. who was the first one to measure the speed of light and conclude that it is finite? 5. who was the first philosopher who thought the speed of light is finite? 13. what is the speed of light numerically? 14. give an example of something moving faster than light 15. give an example for some particles or waves that

The process of predicting values that extend beyond the range of data points is called absolute value extrapolation interpolation prediction for any given: )

This chart shows characteristics of three different types of waves. which statement is best supported by the information in the chart? wave x and wave y are mechanical waves, and wave z is an electromagnetic wave. wave x and wave y are electromagnetic waves, and wave z is a mechanical wave. wave x and wave z are electromagnetic waves, and wave y is a mechanical wave. wave x and wave z are mechanical waves, and wave y is an electromagnetic wave.