Answer:
Work is done when a force that is applied to an object moves that object. The work is calculated by multiplying the force by the amount of movement of an object (W = F * d). A force of 10 newtons, that moves an object 3 meters, does 30 n-m of work. ... You have to exert a force AND move something to qualify as doing work.
Explanation:
The answer is True, i just had to answer this question
Metals usually melt when forming iron
Answer: C. a compound in which one or more carbon atoms have double or triple bonds.
Explanation:
Saturated hydrocarbons are defined as the hydrocarbons in which single bond is present between C-C atoms. The general formula used for these hydrocarbons is
. Example: ![CH_4](https://tex.z-dn.net/?f=CH_4)
Unsaturated hydrocarbons are defined as the hydrocarbons which have double or triple covalent bonds present between carbon and carbon atoms. They are known as alkenes and alkynes respectively. The general formula used for these hydrocarbons is
and
respectively. Example:
Both the hydrocarbons are not soluble in water as they are non polar in nature unlike water which is polar.
Cycloalkanes are also saturated hydrocarbons as single bond is present between C-C atoms.
Thus the correct statement is An unsaturated hydrocarbon is a compound in which one or more carbon atoms have double or triple bonds.
The answer is: B. Collisions between gas particles are elastic; there is no net gain or loss of kinetic energy.
The Kinetic Molecular Theory of Matter
1) Matter is composed of tiny particles (in this example oxygen molecules).
2)These particles are in constant, random motion and possess kinetic energy.
3) The particles also have potential energy due to intermolecular attractions.
4) The average kinetic energy increases as the temperature increases.
5) Energy is transferred from one particle to another during collisions, but at constant temperature the total energy of the system is constant.
Kinetic energy is energy associated with motion.