Answer:
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For the third one on the top you can put to get solar panels on your roof
Neon (10)
Sodium (11)
Silicon (14)
Iron (26)
Uranium (92)
Answer:The higher up an object is the greater its gravitational potential energy. The larger the distance something falls through the greater the amount of GPE the object loses as it falls. As most of this GPE gets changed into kinetic energy, the higher up the object starts from the faster it will be falling when it hits the ground. So a change in gravitational potential energy depends on the height an object moves through.
Explanation: Lifting an apple up 1 metre is easier work than lifting an apple tree the same height. This is because a tree has more mass, so it needs to be given more gravitational potential energy to reach the same height.
Answer:
Height of mirror 0.075 m
width of mirror 0.325 m
Explanation:
given data
wide = 1.3 m
high = 0.30 m
driver’s eyes = 0.50 m
rear window = 1.50 m
solution
we take here height / width of the mirror is
height / width =
.................1
and
height /width of the window is
height /width =
.................2
and
distance of eye / window by the mirror is
distance of eye / window =
.................3
so here
θ = θi = θr ....................4
and tanθ for vertical is
tanθ =
tanθ =
....................5
so
h =
....................6
put here value and we get
h = 0.075 m
and
when we take here tanθ for horizontal than it will be
tanθ =
tanθ =
.......................7
so
....................8
put here value and we get
w = 0.325 m