Answer:
a) 1.55 cm
b) 4.25 cm
Explanation:
Given:
Distance between an object and the image = 5.80 cm
Focal length of the lens, f = -2.60 cm
let the image distance be 'v' and the object distance be 'u'
thus,
u + v = 5.80 cm
or
u = 5.80 - v
from the lens formula, we have
on substituting the values, we have
on rearranging, we get
-3.84 × (v × (5.80 - v)) = v + 5.80 - v
or
-2.23v + 3.84v² = 5.80
or
3.84v² - 2.23v - 5.80 = 0
on solving the quadratic equation, we get
v = 1.55 cm
and u = 5.80 - 1.55 = 4.25 cm
hence,
a) 1.55 cm
b) 4.25 cm
Answer:
If we are upset, often our mind cannot think straight. we need to take deep breaths, and focus on reality. When we are upset we do things out of anger.
Explanation:
Hope this helps!
Answer:
i think the far of the car is 30 m/s.
In space we feel weightlessness because the earths gravity has less effect on us.The Earths gravitational attraction at those altitudes is only about 11% less than it is at the Earths surface. If you had a ladder that could reach as high as the the shuttles orbit, your weight would be 11% less at the top.
By heat or change in matter,
there can be different reactions that create heat (like exothermic or endothermic reactions)
or movement can give off energy too,
energy is basically just heat
