156 is the answer. so 156.25 is almost the same thing, you just round. It's not hard. Thank you!!!
Answer:
i) No, the spring scale does not read a different value
ii) The torque will read a different value, it will reduce
iii) The spring scale does not need to be measured at the center of mass location.
Explanation:
The torque caused by the gyroscope can be given by the relation,
r × f

The torque measured by the gyroscope varies directly with the distance, r.
A decrease in the distance r will also cause a decrease in the value of the torque measured. When the distance, r is reduced from 7.5 inches to 5 inches, the torque caused by the gyroscope's weight also reduces.
The weight of the gyroscope remains constant despite the reduction in the distance because the weight of the gyroscope is not a function of the distance from the gyroscope. Therefore, the spring scale will not read a different value.
Yes, the spring scale does not need to be measured from the center of mass location because the weight does not depend on the location of measurement. The reading of the sprig scale remains constant.
Answer:
R = 1000 ohm
Explanation:
In a circuit with a resistor R, the current is
V = i R
i₀ = V / R
a resistor R₁ is placed in parallel and the current is tripled i = 3 i₀
V = i Req
i = V / Req
3i₀ = V / Req
we substitute
3 (V / R) = V / Req
3 / R = 1 / Req
R = 3 Req
the equivalent resistance of the two resistors in parallel is

R_{eq} =
R / 3 = \frac{R \ R_1}{R + R_1}
⅓ (R₁ + R) = R₁
R = 3R₁ -R₁ = 2 R₁
R = 2 500
R = 1000 ohm
Answer:
a) Ink X is likely to be pure because it only contain 1 spot.
b) The chromatography tell us about ink Y that it is a mixture as it contain more than 1 spot.
c) The three different spots are separated out from ink Y at different heights beacaus different substance have different solubility.