Homogeneous - the mixture is even throughout the solution cannot tell one part from another
heterogenous - the mixture is not mixed even and you can tell one compound from another.
NaCl is a homogeneous solution since you cannot visibly separate the NaCl from the water it is dissolved in.
Answer:
Explanation:
For convenience, let's represent the thermal expansion coefficient by , i.e. .
Given that, for steel °,
initial length, , initial temperature, °, and the final temperature, °.
Let the length of the rod at ° be .
Now, change in length,
Hence, the length of the rod at ° be .
Answer:
Power is defined as Work / Time
P1 = P2 = W1 / T1 = W2 / T2 W1 and W2 are not necessarily the same Power expended depends on both work input over a unit of time
A will be the fastest and c the slowest because of the dip it has a is a straight line fastest way to get from a to b is a straight line b is the second fastest and d is last