Two plane mirrors stand facing each other, 3.08 m apart, and a woman stands between them. The woman faces one of the mirrors fro
m a distance of 1.30 m and holds her left arm out to the side of her body with the back of her left hand facing the closer mirror.(a) What is the apparent position of the closest image of her left hand, measured perpendicularly from the surface of the mirror in front of her?
_____ m behind the nearest mirror
(b) Does it show the palm of her hand or the back of her hand?
_____
(c) What is the position of the next closest image?
_____ m behind the nearest mirror
(d) Does it show the palm of her hand or the back of her hand?
_____
(e) What is the position of the third closest image?
_____ m behind the nearest mirror
(f) Does it show the palm of her hand or the back of her hand?
_____
_____ m behind the nearest mirror
(b) Does it show the palm of her hand or the back of her hand?
_____
(c) What is the position of the next closest image?
_____ m behind the nearest mirror
(d) Does it show the palm of her hand or the back of her hand?
_____
(e) What is the position of the third closest image?
_____ m behind the nearest mirror
(f) Does it show the palm of her hand or the back of her hand?
_____
2 answers:
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Answer:
0.91437 m
0.22859 m
Explanation:
g = Acceleration due to gravity = 9.81 m/s² = a
When the time intervals are equal, if four drops are falling then we have 3 time intervals.
So, the time interval is
For second drop time is given by
Distance from second drop
Distance from second drop is 0.91437 m
Distance from third drop
Distance from third drop is 0.22859 m
The total force applied by the three people is:
This force is pushing toward the direction of the motion, while the frictional force
points in the opposite direction.
We can write Newton's second law applied to the block: the resultant of the two forces must be equal to the product between the block's mass and its acceleration
We know the mass of the block, m=500 kg, and the acceleration,
, so we can find the friction:
This force is pushing toward the direction of the motion, while the frictional force
We can write Newton's second law applied to the block: the resultant of the two forces must be equal to the product between the block's mass and its acceleration
We know the mass of the block, m=500 kg, and the acceleration,