Answer:
a.) The main scale reading is 10.2cm
b.) Division 7 = 0.07
c.) 10.27 cm
d.) 10.31 cm
e.) 10.24 cm
Explanation:
The figure depicts a vernier caliper readings
a.) The main scale reading is 10.2 cm
The reading before the vernier scale
b.) Division 7 = 0.07
the point where the main scale and vernier scale meet
c.) The observed readings is
10.2 + 0.07 = 10.27 cm
d.) If the instrument has a positive zero error of 4 division
correct reading = 10.27 + 0.04 = 10.31cm
e.) If the instrument has a negative zero error of 3 division
correct reading = 10.27 - 0.03 = 10.24cm
Galileo saw a pendulum and wondered why it took the same amount of time moving back and froth. He noted the time the pendulum took it to hold it to his heart. He noted his heart beats as a reference of the small times the pendulum took to reach a particular distance.
Answer
given,
weight of the oak board = 600 N
Weight of Joe = 844 N
length of board = 4 m
Joe is standing at 1 m from left side
vertical wire is supporting at the end.
Assuming the system is in equilibrium
T₁ and T₂ be the tension at the ends of the wire
equating all the vertical force
T₁ + T₂ = 600 + 844
T₁ + T₂ = 1444...........(1)
taking moment about T₂
T₁ x 4 - 844 x 3 - 600 x 2 = 0
T₁ x 4 = 3732
T₁ = 933 N
from equation (1)
T₂ = 1444 - 933
T₂ = 511 N
Answer:
C. 1.3 x 10-11 F
I took the test and got this correct, hope this helps
Explanation:
Using the principle of dimensional analysis, the representation of Pressure would be
Pressure is related to Force, Volume and Density thus :
<u>Using</u><u> </u><u>dimensional</u><u> </u><u>analysis</u><u> </u><u>:</u>
<em>Substituting</em><em> </em><em>the</em><em> </em><em>dimension</em><em> </em><em>into</em><em> </em><em>the</em><em> </em><em>relation</em><em> </em><em>:</em>
<em>Equating</em><em> </em><em>the</em><em> </em><em>power</em><em> </em><em>;</em>
a + c = 1 - - - (1)
a + 3b - 3c = - 1 - - - (2)
-2a = - 2
a = - 2/-2
a = 1
From (1)
1 + c = 1
c = 1 - 1 = 0
c = 0
From (2) :
1 + 3b - 3(0) = - 1
1 + 3b = - 1
3b = - 2
b = - 2/3
Hence,
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