When light travels from air into water, it slows down, causing it to change direction slightly
Answer:
See attached image.
Explanation:
The explanations are on the attachment. The numerical results are below.
1. 63g/7cm^3 = 9 g/cm^3
2. The m or mm must be converted so that the units are the same. 1 m = 1000 mm. I'll convert the meters to mm: 0.080 m = 80 mm.
480 mm^2/80 mm = 6 mm
3. L times L makes no physical sense, unless this is a new Star Wars technique for making dark matter. Entertaining, but useless.
Answer:
97 000 g Na
Explanation:
The absortion (or liberation) of energy in form of heat is expressed by:
q=m*Cp*ΔT
The information we have:
q=1.30MJ= 1.30*10^6 J
ΔT = 10.0°C = 10.0 K (ΔT is the same in °C than in K)
Cp=30.8 J/(K mol Na)
If you notice, the Cp in the question is in relation with mol of Na. Before using the q equation, we can find the Cp in relation to the grams of Na.
To do so, we use the molar mass of Na= 22.99g/mol
Now, we are able to solve for m:
=97 000 g Na
Answer:
They come together and freeze. They turn into a solid and turn into ice.
Explanation: