Answer:
1.2 m from the left end
Explanation:
= mass of the person = 90 kg
= mass of friend = 60 kg
= distance of pivot from the person or from the left end
= length of the seesaw board = 3.0 m
= distance of pivot from the friend or from right end = L - r = 3 - r
Using equilibrium of torque about the pivot
Answer:
force=1250kg * 30m/s+10
Explanation: it's a change in acceleration
Answer:equal mass
Explanation:the mass of both is 5kg
Answer: B. 16
Explanation:
The given table:
x y
2.5 6.25
9.4 88.36
15.6 243.63
19.5 380.25
25.8 665.64
Here, we observed that value of y is the square value of x.
i.e. 
[For example 2.5²=6.25, 9.4²=88.36, 15.6²=243.63]
Put x=4, we get
Hence, the approximate value of y for x = 4 is 16.
So, the correct option is B. 16 .
In making a thermometer used to monitor the temperature of the water, a glass tube, a scale, and a thermometric liquid such as alcohol is required.
<h3>What is a thermometer?</h3>
A thermometer is an instrument that is used to measure or read the temperature of a body or a substance.
There are different types of thermometers such as:
- Liquid-in-glass thermometers
- Gas thermometers
- Resistance thermometers
A simple liquid-in-glass thermometer consists of the following parts:
- A glass tube
- A scale
- A thermometric liquid such as alcohol
Therefor, in making a thermometer used to monitor the temperature of the water, a glass tube, a scale, and a thermometric liquid such as alcohol is required.
In conclusion, a thermometer is the instrument used in measuring temperature.
Learn more about thermometers at: brainly.com/question/25034625
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