Which wave is a body wave?
a. p wave
b. l wave
c. b wave
d. t wave

In positive numbers less than 1, the zeros between the decimal point and non zero are significant

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Under the action of a constant force an object accelerates at 7.8 m/s2. what will the acceleration be if (a) the force is halved? (b) the object's mass is halved? (c) the force and the object's mass are both halved? (d) the force is halved and the object's mass is doubled?