Samples of different materials, A and B, have the same mass, but the sample of B is higher in density. Which statement could explain why this is so?
O A. The particles that make up material A are more closely packed
together than the particles that make up material B.
B. The sample of material B has greater volume than the sample of
material A.
C. The particles that make up material A have more mass than the
particles that make up material B.
D. The particles that make up material B are more closely packed
together than the particles that make up material A.

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.

plasma is the state of matter where the substance is ionized and has no definite shape or volume. the fact of being ionized makes the substance a good electrical conductor.

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