How does the disturbance travel through the coil when you raise your arm up and down?

b) phosphorus pentoxide

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i just did this and got a 100.

1.195000

explanation:

total mass=0.0117+0.0137+0.0881+0.0111

total mass= 0.01172kg

total velocity = 0.283-0.743+0.871-0.799+0.155+0.637+0.301=0.102

momentum=mv=0.1172*0.102=1.195000//

the answer you are looking for is d. there are no holes for blood to enter or leave the system. your welcome