How long it takes to earth to revolve completely on its Axis
Answer:
Power=50.17dioptre
Power=50.17D
Explanation:
P=1/f = 1/d₀ + 1/d₁
Where d₀ = the eye's lens and the object distance= 5.70m=
d₁= the eye's lens and the image distance= 0.02m
f= focal length of the lense of the eye
We know that the object can be viewed clearly by the person ,then image and lens of the eye's distance needs to be equal with the retinal and the eye lens distance and this distance is given as 0.02m
Therefore, we can calculate the power using above formula
P= 1/5.70 + 1/0.02
Power=50.17dioptre
Therefore, the power the eye's is using to see the object from distance is 5.70D
I think a reflected ray should be symmetrical so I believe your answer is 32 degrees
1) The area of a circle is given by
where r is the radius of the circle. In this problem, we are told that the area is
so we can rearrange the previous equation to calculate the radius:
And now we can find the circumference, by using the formula:
Therefore, the correct answer is D. 75.3984 meters.
2) The volume of a cube is given by:
where L is the length of the edge. In this problem, L=6 cm, therefore the volume of the cube is
and so, the correct answer is A. 216 cu. cm.
Answer:
1) when an acid and a base react to form water and a salt and involves the combination of H+ ions and OH- ions to generate water
2) sulfur dioxide and nitrogen oxides
3)mixtures of sodium bicarbonate,magnesium hydroxide, calcium carbonate
4)
A) sulfuric acid
B) calcium ammonium nitrate
C) calcimine, kalsomine, calsomine, or lime paint
D) ammonium hydroxide
5)
A) Na2SO4 + H2O
B) NaCl + H2O + CO2
6) I can't find anything to help with the answers
7)
A) Can't find any thing
B) copper oxide
