(a) The "lead" in pencils is a graphite composition with a Young's modulus of about 1 × 10 9 N/ m 2 . Calculate the change in length of the lead in an automatic pencil if you tap it straight into the pencil with a force of 4.0 N. The lead is 0.50 mm in diameter and 60 mm long. (b) Is the answer reasonable? That is, does it seem to be consistent with what you have observed when using pencils?
(a) The "lead" in pencils is a graphite composition with a Young's modulus of about 1 × 10 9 N/ m 2 . Calculate the change in length of the lead in an automatic pencil if you tap it straight into the pencil with a force of 4.0 N. The lead is 0.50 mm in diameter and 60 mm long. (b) Is the answer reasonable? That is, does it seem to be consistent with what you have observed when using pencils?
(a) The "lead" in pencils is a graphite composition with a Young's modulus of about
1
×
10
9
N/ m2. Calculate the change in length of the lead in an automatic pencil if you tap it straight into the pencil with a force of 4.0 N. The lead is 0.50 mm in diameter and 60 mm long. (b) Is the answer reasonable? That is, does it seem to be consistent with what you have observed when using pencils?
4. In the figure below what is the value of the angle 0?
A
30
PLEASE help with the experimental setup for this theory because i am so confused.
Part 2 - Geometry and Trigonometry
1. Line B touches the circle at a single point. Line A extends radially through the center of
the circle.
A
B
(a) Which line is tangential to the circumference of the circle?
(b) What is the angle between lines A and B.
2. In the figure below what is the angle C?
30
45
3. In the figure below what is the value of the angle 0?
30°
4. In the figure below what is the value of the angle 0?
A
30°
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