Physics, 25.11.2020 01:20 samantha636
21. Jenny performs an experiment to measure the acceleration due to gravity (g). The results
are presented in the below: (note: timing procedure was done for 20 oscillations)
Time taken for 20
oscillations t(s)
15.5 20.1 23.7 26.9 29.8 32.4
Length l(m) 0.15 0.25 0.35 0.45 0.55 0.65
Time Period T(s) 0.775
T
2 (s2
) 0.60
a. Complete the table above (8 marks)
b. Plot a graph of T2
against l. (10 marks)
c. Determine the gradient of the graph (5 marks)
d. Given that gradient = 39.4/g, determine the acceleration due to gravity g. (4 marks)
22. Complete the following table of Fundamental Quantities: (10 marks)
Quantity Symbol Unit Symbol Measuring Instrument
Time
m
Ampere
K
Meter ruler
23. Describe a method that could be used to determine if changing angle of displacement
would affect the period of oscillation of a simple pendulum. (12 marks)
(Note: you may use a diagram in this section)
Answers: 1
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Orque can be calculated by multiplying the force (n) applied at 90? to the lever arm at a distance (m) from the pivot point (point of rotation), the compound si unit for the torque is n? m. if the force (at 90? to the lever arm) applied is 15 n and it is applied at 2.0 m from the pivot point (point of rotation), what is the torque on the lever?
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Physics, 21.06.2019 23:20
Asmall, positively charged ball is moved close to a large, positively charged ball. which describes how the small ball likely responds when it is released? it will move toward the large ball because like charges repel. it will move toward the large ball because like charges attract. it will move away from the large ball because like charges repel. it will move away from the large ball because like charges attract.
Answers: 3
Physics, 22.06.2019 04:30
The pressure increases by 1.0 x 104 n/m^2 for every meter of depth beneath the surface of the ocean. at what depth does the volume of a pyrex (bulk modulus 2.6 x 1010n/m^2) glass cube, 9.8 x 10^−2m on an edge at the ocean's surface, decrease by 7.5 x 10−10m^3? explain the formula beyond this point: p=1.0x10^4, b=2.6x10^10, l=9.8x10^−2, delta v=7.5x10^−10. at some point l needs to be cubed. why p is divided by delta v?
Answers: 2
Physics, 22.06.2019 12:00
Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value
Answers: 1
21. Jenny performs an experiment to measure the acceleration due to gravity (g). The results
are pr...
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