Answer: Option (d) is the correct answer.
Explanation:
Specific heat is defined as the amount of heat necessary for per unit mass to raise the temperature by one degree Celsius.
The formula to calculate specific heat is as follows.
where, Q = heat added
m = mass of substance
C = specific heat
= change in temperature
Therefore, we can conclude that elements with low specific heat values have low number of atoms per unit gram.
Answer:
a b c d e f g h I love you will you marry me
Answer:
R / 25
Explanation:
Let the initial length of the wire is L and its resistance is R.
Now the length is cut into 5 equal parts.
The resistance of a wire is directly proportional to the length of the wire, thus, the resistance of each portion of the wire is R/5.
Now the five pieces are connected in parallel combination, the equivalent resistance is
Thus, the resistance of the new cable is R / 25.
Explanation:
Velocity is the first derivative of position with respect to time. So for each option, the velocity is:
v = 3t² + 2
v = 2t − 2
v = 1
v = -2t
At some point in time, v = 0. It can't be the first option, which is always positive. It can't be the third option, which is always 1. And it can't be the fourth option, which is always negative.
Only the second option has a velocity that can be 0 (at t = 1).
“In mechanics, equilibrium has to do with the forces acting on a body. When no force is acting to make a body move in a line, the body is in translational equilibrium; when no force is acting to make the body turn, the body is in rotational equilibrium. A body in equilibrium at rest is said to be in static equilibrium.”