Zeros that follow non-zero numbers and are also to the right of a decimal point are significant.
2 answers:
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Answer:
The value is
The force will be outward
Explanation:
From the question we are told that
The diameter of the disk is
The external pressure on Mars is
From the question we are told that
Internal pressure = External pressure
Generally the external Force on earth is
Here is the atmospheric pressure with value
So
=>
=>
Generally the external Force on Mars is
=>
=>
Net force is mathematically represented as
=>
=> converting to pounds
=>
Given that that the value is positive then the force will be outward
A) 11.1 cm
We can find the focal length of the lens by using the lens equation:
where
f is the focal length
p = 16.0 cm is the distance of the object from the lens
q = 36.0 cm is the distance of the image from the lens (taken with positive sign since it is on the opposide side to the image, so it is a real image)
Solving the equation for f:
B) Converging
The focal length is:
- Positive for a converging lens
- Negative for a diverging lens
In this case, the focal length is positive, so it is a converging lens.
C) 18.0 mm
The magnification equation states that:
where
is the heigth of the image
is the height of the object
Solving the formula for , we find
So the image is 18 mm high.
D) Inverted
From the magnification equation we have that:
- When the sign of is positive, the image is erect
- When the sign of is negative, the image is inverted
In this case, is negative, so the image is inverted.