Answer:
300000 KM/Sec
Explanation:
Distance between the Earth and Planet Y = 20 LY
One light year is the distance traveled when traveling at the speed of light which 300000 KM/Sec.
Anna passed the Earth traveling at speed v. After reaching planet Y, she is 20 years older than when she passed Earth. That means she took 20 years to reach planet Y. This is only possible when she traveled with the speed of light
So the velocity v = 300000 KM/Sec.
Answer:
In order to convert density to grams, you have to put the mass on one side of the equation, and the density and the volume on the other. Therefore, d * v = m. Multiply the density by the volume. Using the example in step 1, you would multiply 2 g/mL by 4mL.
Explanation:
ok
Because the object is still made of the same material
Density is not affected by the weight and shape of an object its affected by how concentrated the atoms are in a given volume
