The question is missing the alternatives. Here is the complete question.
Two vectors of magnitude |A| = 8units and |B| = 5units make an angle that can vary from 0° to 180°. The magnitude of the resultant vector A+B CANNOT have the value of:
A. 2 units
B. 5 units
C. 8 units
D. 12 units
Answer: A. 2 units
Explanation: Vector is an entity that has characteristics as magnitude and direction. Resultant vector is the "sum" of 2 or more vectors.
In this question, the vectors have magnitude and angle varies from 0° to 180°.
When angle between vectors A and B is 0°, they are parallel and pointing to the same direction, so:
= 13
When the angle is 180°, it means vectors are in opposing directions, so:
= 3
From the calculations, we can conclude the magnitude of resultant vector varies between 3 and 13.
<u>The least value is 3, so it </u><u>cannot</u><u> have a value of </u><u>2 units</u><u>.</u>
Answer:
Explanation:
A )
v² = u² + 2 a s
u = 0
s = 2.5
a = 9.8
v² = 2 x 9.8 x 2.5 = 49
v = 7 m /s
B )
time required to fall by first 2.5 m , t₁
s = 1/2 a t₁²
2.5 = .5 x 9.8 t₁²
t₁ = .714 s
time required to fall by 10 m
s = 1/2 a t₂²
10 = .5 x 9.8 t₂²
t₂ = 1.43 s
time required to fall by last 7.5 m
= t₂ - t₁
= 1.43 - .714
= .72 s
C )
time taken by second = .72 s
For second let initial velocity required be u
s = ut + 1/2 g t²
10 = u x .72 + .5 x 9.8 x .72²
10 = u x .72 + 2.54
u = 10.36 m /s
Answer:
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Explanation:
Answer:
(1) Use the data in Table R2 and error propagation rule to compute the travel time ratio (with errors) of the other objects to the hollow cylinder ? ℎ? . Fill in Table R5 below. [6] Table R5 Solid cylinder Billiard ball Racquetball ? ? ℎ? ± ± ± (2) Discuss how the ratio of solid cylinder to hollow cylinder have confirmed or contradicted the theoretical ratio in Eq. (8) in Manual . Compute the % error and make discussions. [4] Answer: (3) From the travel time ratio, please determine (i) whether the billiard ball is solid or hollow, and (ii) whether the racquetball is solid or hollow. Write down your reasons. (The answer can be uncertain if your measurements do not show enough information.) [4]
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PHYS2125 Physics Laboratory I ©2018 Kuei Sun The University of Texas at Dallas 5 Answer: (4) Which object in Table R2has the largest SEOM? Please discuss the reason for this relatively largeSEOM and how to improveit. [3] (5) Please discuss TWO possible systematic errors in the measurement. [3] Answer: **Attach your calculation details. Use as many paper sheets as you need. Calculations that demonstrate your understandings may gain you partial credit. **Make sure your work-area and equipment are the same as they were before you leave.
Explanation: