Calculate the density of an object with a mass of 45.34g and a volume of 23.1ml

1.96 g/mL

Explanation:

Density is mass divided by volume.

D = M / V

D = (45.34 g) / (23.1 mL)

D = 1.96 g/mL

as a general rule, scissors have blades less than 6 in (15 cm) long and usually have handles with finger holes of the same size. shears have blades scissors used to cut hair or fabric must be much sharper.

d

explanation:

v=uf/(u-f)

= 5.10/(5-10) convex lens has positive focal length

=50/-5

=-10 cm (formed at other side)