Test part 1-density and particle model (1004 Physics) The diagrams show the equipment before and after the stone is immersed.
measuring
cylinder
cm
100-
90 -
cm
100-
90
80-
70
60-
50
80-
70-
60-
50-
stone
water
30
30
20-
10
balance
105.0 g
217.5g
before the stone
is immersed
after the stone
is immersed
What is the density of the material of the stone?
A 1.7g/cm B 3.3 g/cm C 4.5g/cm
D 8.7g/cm

we need answer choices

c. 7/3

step-by-step explanation:

a rational number is like pi- it is a repeating decimal.

a. is -1.8

b. 2.236068

c. 2.3333333333333333333

d.   is 3

i hope that ! =)

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia

e/c, where e is its total energy