What is latent heat? a. energy released or absorbed to change the kinetic energy of a substance b. energy released or absorbed to change the pressure of a substance c. energy released or absorbed to change the temperature of a substance d. energy released or absorbed to change the phase of a substance

The correct choice is

D. energy released or absorbed to change the phase of a substance.

By definition, latent heat is the amount of heat required by an object to change from one state to another. for example : heat required for 1 g of ice at 0 °C converts to water at 0 °C is 334 J.  heat required for 1 g of water at 100 °C to vaporize is 2230 J.

the heat required to convert a solid into a liquid or vapor, or a liquid into a vapor, without change of temperature. hope this helps

The value is

Explanation:

From the question we are told that

   The horizontal speed is  

    The horizontal distance is  

Generally the time taken by the hot magma in air before landing is mathematically represented as

=>    

=>    

Generally the initial vertical velocity of the magma when it was lunched is  

Then the final velocity of the magma when it hits the ground is mathematically represented s

Here the negative sign mean that the direction of the velocity is towards the negative y -axis

So  

=>