Heat is supplied to convert 1.26 kg of water at 100°C to steam at 100°C? Latent heat of vaporization of water is 2.26 x 106 J/kg.
a
What is latent heat, and how does it affect the temperature of a substance?

Given that,

Mass of water = 1.26 kg

Latent heat of vaporization of water

We need to calculate the latent heat

Using formula of latent heat

Where, Q = energy

m = mass

L = latent heat of vaporization

Put the value into the formula

The temperature changes liquid to steam.

So, The temperature will be increases.

Hence, The latent heat is and temperature increases.

the average speed is 24.57 km/hr

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west