The first thing you should know for this case is that density is defined as the quotient between mass and volume:
D = M / V
In addition, you should keep in mind the following conversion:
1Kg = 1000g
Substituting the values we have:
D = (23.0 * 1000) / (2920) = 7.88 g / cm ^ 3
answer
the density of the iron plate is 7.88 g / cm ^ 3
Answer:
when work is done on the system or heat comes into the system
Speed v = distance travelled / time taken
v = d / t
v = 540 / 60h
v = 9 km /h
I feel like it could be A
