When a hydrometer (see Fig. 2) having a stem diameter of 0.30 in. is placed in water, the stem protrudes 3.15 in. above the water surface. If the water is replaced with a liquid having a specific gravity of 1.10, how much of the stem would protrude above the liquid surface

5.79 in

Explanation:

We are given that

Diameter,d=0.30 in

Radius,r=

Weight of hydrometer,W=0.042 lb

Specific gravity(SG)=1.10

Height of stem from the water surface=3.15 in

Density of water=

In water

Volume  of water displaced

Volume of another liquid displaced=

Change in volume=V-V'

Substitute the values

By using

1 ft=12 in

l=2.64 in

Total height=h+l=3.15+2.64=5.79 in

Hence, the height of the stem protrude above the liquid surface=5.79 in

answer: d. a cme increases the amount of energy in the solar wind

explanation:

coronal mass ejections, also called cmes, are large clouds of plasma and magnetic field that erupt from the sun. only when the cloud is aimed at earth will the cme hit earth and therefore cause impacts. high-speed solar wind streams come from areas on the sun known as coronal holes.