Answer:
1) a substance made by mixing other substances together.
2) diverse in character or content.
3) of the same kind; alike.
4) a means of solving a problem or dealing with a difficult situation.
5) a homogeneous noncrystalline substance consisting of large molecules or ultramicroscopic particles of one substance dispersed through a second substance. Colloids include gels, sols, and emulsions; the particles do not settle, and cannot be separated out by ordinary filtering or centrifuging like those in a suspension.
Answer:
a
Explanation:
A 60-W light bulb emits spherical electromagnetic waves uniformly in all directions. If 50% of the power input to such a light bulb is emitted as electromagnetic radiation, what is the radiation intensity at a distance of 2.00 m from the light bulb
so i did 60(50%)=30÷2=15
It means cork has less density comparing to water
For the given problem, we calculate the required time by
using the formula P = W/t.
P = [(1/2)mv_f^2 – (1/2)mv_i^2]/ t
The car accelerates from 0 -58 mph, so the power engine will
be
P = (1/2) x m x 58^2 / t = 1682 m / t
According to the problem, the engine produces full power so
the time required can be calculated as
420.5 m / 1.40 = 1682 m / t
t = 5.6 seconds
Adding energy (heating) atoms and molecules increases their motion, resulting in an increase in temperature.Removing energy (cooling) atoms and molecules decreases their motion, resulting in a decrease in temperature.Energy can be added or removed from a substance through a process called conduction.In conduction, faster-moving molecules contact slower-moving molecules and transfer energy to them.During conduction the slower-moving molecules speed up and the faster-moving molecules slow down.Temperature is a measure of the average kinetic energy of the atoms or molecules of a substance.Heat is the transfer of energy from a substance at a higher temperature to a substance at a lower temperature.Some materials are better conductors of heat than others.