John really wants a promotion and believes that he has a high probability of earning the promotion if he works hard. John acknowledges that a promotion is important to him, that performing well will result in a promotion, and he believes he has a good chance of earning the promotion, this is an example of:.

Expectancy theory

Explanation:

Expectancy theory states that an employee's performance is an outcome of his expectations of rewards and incentives which would follow such performance.

The theory was proposed by Victor Vroom who stressed that an employee's motivation is the outcome of his assessment that his efficient performance leads to rewards and incentives.

Expectancy refers to the belief that good performance would be rewarded by the management.

In the given case, John expects his good performance will help him earn a promotion, for which he needs to work hard. This is an example of expectancy theory.

Why is the temperature constant during the melting of water?

THE HEAT WE R SUPPLYING TO THE WATER TO RAISE THE TEMP OF THE WATER IS USED BY THE MOLECULES TO BREAK INTERMOLECULAR BONDS WHICH HELP IN THE CHANGING OF THE LATTICE (STRUCTURE) OF THE WATER .

ICE HAS A HEXAGONAL RING LIKE STRUCTURE WHICH IS CONVERTED INTO REGULAR CRYSTALLINE STRUCTURE WHICH CAN ONLY BE FORMED WITH THE HELP OF FORMATION OF NEW BONDS AND BREAKDOWN OF OLDER ONES

THE AMOUNT OF ENERGY WHICH IS USED IN CONVERSATION OF THE STATE OF FROM SOLID TO LIQUID IS KNOWN AS LATENT HEAT OF FUSION.

SO TEMP REMAIN CONSTANT DURING CHANGE IN STATE .