Answer:
<h2>Uses of plane mirrors</h2>
They are used in periscopes, for signalling, in kaleidoscopes, to see round dangerous bends, in meters, as mirror tiles, in a sextant, in an overhead projector, an SLR camera, car wing mirrors, in microscopes and as reflecting number plates to mention only some!
Explanation:
Hope it is helpful....
The answer you are looking for is Chemistry. Chemistry is the study of matter and molecules and how they change.
Regional metamorphism is a type of metamorphism in which the minerals and the textures of the rocks are changed or altered due to the effect of pressure and heat over a wide area or region.
This type of metamorphism often results in metamorphic rocks that are strongly foliated.
Metamorphism usually occurs in the folds of thrust mountain belts.
Answer: You would most likely find regional metamorphism associated with a mountain belt.
Answer:
1.0 M HNO3 at 40<em>°C</em>
Explanation:
Rate of chemical reaction: This can be defined as the number of moles of reactant, converted or product formed per unit time.
Factors that affect rate of chemical reaction:
(a) Temperature: Generally, an increase in temperature increase the rate of chemical reaction by (1) increasing the number of particles with energy equal to or greater than the activation energy, (2) Increasing the average speed of all the reactant particles, due to greater kinetic energy, leading to higher frequency of collision.
(b) Concentration: An increase or decrease in the concentration of the reactant will result to a corresponding increase or decrease in the effective collision of the reactant and hence in the reaction rate.
other factors that affect the rate of chemical reaction are
(i) Nature of the reactant
(ii) Surface area of reactant
(iii) presence of light
(iv) presence of catalyst.
From the question above,
<em>The condition with the highest temperature and concentration will produce the GREATEST reaction rate.</em>
<em>And that is 1.0 M HNO3 at 40 °C</em>
Answer:
The work done by the frictional force is 600J.
Explanation:
The work 
done by the frictional force is
.
Now, 
and 
; therefore,
Hence, the work done by friction is 660J.
