A single-turn current loop, carrying a current of 3.50 a, is in the shape of a right triangle with sides 50.0, 120, and 130 cm.
1 answer:
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Answer: 9300 kcal
Explanation: Given: Latent heat of fusion of aluminum is 93 kcal/kg.
That is for melting 1 kg of aluminium at 660 amount of heat required is = 93kcal
Thus for 100 kg of aluminium at 660 amount of heat required is=
Thus the amount of energy needed to melt 100 kg of aluminum at the melting point is 9300 kcal.
To answer any question to do with mass, acceleration, velocity (etc...) you use one or more of this set of equations. They are called the 'Kinematic' equations and are really easy to re-arrange, when you need to find the 'unknown quantity' that the question is asking for. Below these equations i will show you the general problem solving strategy to very quickly and easily solve these problems.
The Kinematic Equations
The Method
1. Write down all the known variables and their values + the one you don't know with a question mark next to it. (v = ?)
2. Find the kinematic equation where you have ALL the variables <span>except</span> the one you are missing.
3. Re-arrange the equation to solve for the missing variable.
Done!
<span>HINT: Sometimes you need to use two kinematic equations, one after the other, in order to get the answer. It is common for questions to not give two variables, like velocity AND acceleration to force you to solve for one, then use that solution in another kinematic equation to finally solve the problem. Writing down the known variables is the fastest way to see what you have and what you need.
____________________________________________
</span>This question takes things one step further and is asking you to find the FORCE on the bullet. To convert to a force in any situation you need to find the <span>acceleration</span> and multiply it by the mass as follows:
<em>Remember this equation!! you will use it ALL the time.
</em>Please let me know if you still cannot solve this problem, but i believe you should be fine :)<em>
</em>
The Kinematic Equations
The Method
1. Write down all the known variables and their values + the one you don't know with a question mark next to it. (v = ?)
2. Find the kinematic equation where you have ALL the variables <span>except</span> the one you are missing.
3. Re-arrange the equation to solve for the missing variable.
Done!
<span>HINT: Sometimes you need to use two kinematic equations, one after the other, in order to get the answer. It is common for questions to not give two variables, like velocity AND acceleration to force you to solve for one, then use that solution in another kinematic equation to finally solve the problem. Writing down the known variables is the fastest way to see what you have and what you need.
____________________________________________
</span>This question takes things one step further and is asking you to find the FORCE on the bullet. To convert to a force in any situation you need to find the <span>acceleration</span> and multiply it by the mass as follows:
<em>Remember this equation!! you will use it ALL the time.
</em>Please let me know if you still cannot solve this problem, but i believe you should be fine :)<em>
</em>