When mechanical energy is lost due to friction, it becomes energy. chemical thermal kinetic electrical?

Thermal

Explanation:

Here mechanical energy is defined as

Mechanical energy = Kinetic energy + potential energy

so here we know that mechanical energy is conserved when all forces on an object is conservative in nature

if we have non-conservative forces on the system then that will decrease the mechanical energy.

This decrease in mechanical energy is mainly due to different types of frictional losses

All these frictional losses are always in the form of thermal energy where we will have some heat loss

answer: at 24 february, 2014 the population gets twice of its initial population.

explanation:

since we have given that

the population for alpha city, t years after january 1, 2004 is given as

first we find out the initial population, i.e. t=0,

so, our quadratic equation becomes,

according to question, we have said that if the population has twice its initial population, then it becomes

so, time taken to reach this above mentioned population is given by

now, we know that time can't be negative so, we take t=9.149 years.

hence, at 24 february, 2014 the population gets twice of its initial population.

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.