Answer:
Potential energy is stored energy and the energy of position––gravitational energy. There are several forms of potential energy. Electrical Energy is the movement of electrical charges. Everything is made of tiny particles called atoms.
Complete Question:
A 59.1 g sample of iron is put into a calorimeter (see sketch attached) that contains 100.0 g of water. The iron sample starts off at 85.0 °C and the temperature of the water starts off at 23.0 °C. When the temperature of the water stops changing it's 27.6 °C. The pressure remains constant at 1 atm.
Calculate the specific heat capacity of iron according to this experiment. Be sure your answer is rounded to the correct number of significant digits
(Question attached)
Answer:
(rounded to 1 decimal place)
Explanation:
A calorimeter is used to measure the heat of chemical or physical reactions. The example given in the question is using the calorimeter to determine the specific heat capacity of iron.
When the system reaches equilibrium the iron and water will be the same temperature, 
. The energy lost from the iron will be equal to the energy gained by the water. It is assumed that the only heat exchange is between the iron and water and no exchange with the surroundings.
(Eq 1)
(Eq 2)
Water:
Iron:
Substituting Eq 1 into Eq 2 and details extracted from the question:
<span>The statement : According to the law of conservation of energy, the total amount of energy in the universe does not change, but remains constant - is TRUE. The main point which led me to decide is that our universe is the example of a closed system which means there's nothing inside. Hope you will agree with my opinion.
</span>
Answer:
Solubility is the ability of one substance to dissolve in another substance
.
Explanation:
The substance dissolve completely in the solvent. This property of the solvent is known as Solubility. Thus, it is the ability of any Solute or substance to dissolve in solvent or another substance.
Answer:
Explanation:
The momentum will be conserved .
M₁ V₁ =M₂V₂
2.3 x 15 = 75 x V
V = .46 m/s
velocity of astronaut will be 0.46 m/s after the throw of wrench .
Impulse = change in momentum
= 75 x .46 - 0
= 34.5 kg m/s
Impulse = force x time
34.5 = force x .12
force = 34.5 / .12
= 287.5 N
average acceleration
= force / mass
= 287.5 / 75
= 3.83 m /s²
