is a technique for confirming that q received packet or frame is likely to match what was sent a. Redundancy
b. Framing
c. Error Checking

A. newton 's fourth law a liquid in a confined space is not compressed.

Hypothesis: volumes of both figures are equal.the volume of  figure 1 is: .the volume of figure 2 is: .since , you can conclude that and . so, .volumes of figures are equal only when an angle in the basis is right (then figures will be the same), in another cases volume of figure 1 is less than volume of figure 2.the hypothesis was not correct in all cases.

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