Part a the third law of thermodynamics relates the entropy (randomness of matter to its absolute temperature. which of the following statements are in agreement with the third law of thermodynamics? check all that apply. check all that apply. at zero degrees kelvin, substances maximize entropy. at the melting point, the entropy of a system increases abruptly as the compound transforms into a liquid. as the temperature of a perfect crystal increases, the random vibrations of the molecules decrease. in a gaseous state, the entropy of the system is zero. in a crystalline state, there is a tendency to minimize entropy. at absolute zero, the interatomic distance within a crystal is minimized.

The correct statements are at the melting point, the entropy of a system increases abruptly as the compound transforms into a liquid, in a crystalline state, there is a tendency to minimize entropy and at absolute zero, the inter-atomic distance within a crystal is minimized.

Explanation:

Third law of thermodynamics states that the minimum entropy must be assigned a zero value for a perfectly  pure crystalline structure.

From this we can say that,

Temperature is directly proportional to the entropy of the system.

Less the temperature, less will be randomness of the particles (less will be the entropy), less will be the inter-atomic distance between the particles.

Hence, from the information above, the correct statements are:

a and c

c is 100% but i am confused in a

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards