Let us say that Cp is the specific heat of the metal object.
Then we do a heat balance (heat lost by metal = heat gained by water):
- 19g * Cp * (22degC – 96degC) = 75g * 4.184J/g degC * (22degC
– 18degC)
<span>Cp = 0.893 J/g degC</span>
The current is
(120v) / (the resistance of the stove in ohms) .
The unit of the current is Amperes.
<u>Note: I'm assuming the data 77.3 is the mass of the crate.</u>
Answer:
Explanation:
The coefficient of static friction, called \mu_s is the ratio between the force needed to start moving an object above a rough surface (Fr), and the normal force the surface exerts on the object (N).
The normal force is numerical equivalent to the weight of the body if no other external forces are acting.
The mass of the crate is m=77.3 Kg, thus its weight and normal force is:
Now we calculate the coefficient:
You need to change milligrams into grams: 56mg=0.056g
So : 0.056+3.211 =3.267 g
Answer:
Condenser
Explanation:
The refrigerator work on a simple cycle:
1- When the cold air inside the refrigerator starts to get warm, it loses its thermal energy ot the cold refrigerant which is flowing inside an evaporator. This thermal energy converts the refrigerant into a gas.
2- The refrigerant, in a form of gas, goes to the compressor. The compressor compresses it and increases its temperature even more.
3- Then it goes to the condenser where it loses its most of the thermal energy to the condenser coils. When it loses the energy. it comes back to liquid form.
4.The refrigerant flow back to the evaporator
Cycle continuous