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Lunna [17]
3 years ago
5

Please help! I especially need help with the second question but help with the first one would be most appreciated!

Physics
1 answer:
lara31 [8.8K]3 years ago
4 0

Answer:

a) Team A will win.

b) The losing team will accelerate towards the middle line with 0.01 m/s^{2}

Explanation:

Given that Team-A pulls with a force , F_{1} = 50N

and Team-B pulls with a force , F_{1} = 45N

∵ F_{1} > F_{2}

The rope will move in the direction of force F_{1}.

∴ Team-A will win.

b) Considering both the teams as one system of total mass , m = 246+253 = 499 kg

Net force on the system , F = F_{1} - F_{2} = 50-45 = 5N

Applying Newtons first law to the system ,

F = ma , where 'a' is the acceleration of the system.

Since , both the teams are connected by the same rope , their acceleration would be the same.

∴ 5 = 499×a

∴ a = 0.01 m/s^{2}

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Bromium has two naturally occurring isotopes: 79br, with an atomic weight of 78.918 amu, and 81br, with an atomic weight of 80.9
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The two different isotopes have weights :

w1 = 78.918 amu

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average weight w3 = 79.903 amu

The mixing of two components can be modeled as

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hence w1. x + w2.(1-x)  = w3

now this is a linear equation in 'x'. Substituting the values we get

x = 0.507

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Why does cold weather feel colder inside?
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How much force is required to pull a spring 3.0 cm from
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4 0
3 years ago
50 grams of ice cubes at -15°C are used to chill a water at 30°C with mass mH20 = 200 g. Assume that the water is kept in a foam
Arada [10]

Answer : The final temperature is, 25.0^oC

Explanation :

In this problem we assumed that heat given by the hot body is equal to the heat taken by the cold body.

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c_2 = specific heat of water = 4.18J/g^oC

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m_2 = mass of water = 200 g

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T_2 = initial temperature of water = 30^oC

Now put all the given values in the above formula, we get:

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Therefore, the final temperature is, 25.0^oC

5 0
3 years ago
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