Answer: (b) temperature and torsional effects are automatically compensated for by the bridge,
Explanation:
As can be seen, strain gages 1 and 4 are on top of the beam and strain gages 2 and 3 are on the bottom of
the beam. Therefore strain gages 1 and 4 experience a tensile strain (are stretched) and strain gages 2
and 3 experience a compressive strain. If the relationship between strain and resistance is linear, then
under some load F the changes in resistance will be
R1= R1 + dR1
R4= R4 + dR4
tensile(4)and
R ¢2= R2 -dR2
R ¢3= R3 -dR3
compressive. (5)
when the four strain gages have an equal nominal
resistance (i.e., R1 = R2 = R3 = R4 = R) then the deflection method Wheatstone bridge equation reduces to the linear equation
Using known weights, a calibration curve can be established that relates the weight W to the output
voltage on a digital meter Eo,
Eo= a0 + a1W , (4)
where a0 and a1 are some constants. Once an unknown weight is known, an unknown mass or density
Graphing is useful
Help analyzing data
Of Math and science
Answer:
lol, I like math. and this question is awesome. lol.
Explanation:
So I like math because I am good at it. I hate ELA bc im bad at it.
Complete Question
For each of the following scenarios, describe the force providing the centripetal force for the motion:
a. a car making a turn
b. a child swinging around a pole
c. a person sitting on a bench facing the center of a carousel
d. a rock swinging on a string
e. the Earth orbiting the Sun.
Answer:
Considering a
The force providing the centripetal force is the frictional force on the tires \
i.e 
where
is the coefficient of static friction
Considering b
The force providing the centripetal force is the force experienced by the boys hand on the pole
Considering c
The force providing the centripetal force is the normal from the bench due to the boys weight
Considering d
The force providing the centripetal force is the tension on the string
Considering e
The force providing the centripetal force is the force of gravity between the earth and the sun
Explanation:
Answer:
4.2s
Explanation:
Given parameters:
Power = 2190W
Mass of box = 1.47 x 10⁴g
distance = 6.34 x 10⁴mm
Unknown:
Time = ?
Solution:
Power is the rate at which work is done;
Mathematically;
Power =
Time =
Work done = weight x height
convert mass to kg;
100g = 1kg;
1.47 x 10⁴g = 14.7kg
convert the height to m;
1000mm = 1m
6.34 x 10⁴mm gives 63.4m
Work done = 14.7 x 9.8 x 63.4 = 9133.4J
Time taken =
= 4.2s