The answer to your question is A
Answer:
The rate at which the container is losing water is 0.0006418 g/s.
Explanation:
- Under the assumption that the can is a closed system, the conservation law applied to the system would be: , where is all energy entering the system, is the total energy leaving the system and, is the change of energy of the system.
- As the purpose is to kept the beverage can at constant temperature, the change of energy () would be 0.
- The energy that goes into the system, is the heat transfer by radiation from the environment to the top and side surfaces of the can. This kind of transfer is described by: where is the emissivity of the surface, known as the Stefan–Boltzmann constant, is the total area of the exposed surface, is the temperature of the surface in Kelvin, is the environment temperature in Kelvin.
- For the can the surface area would be ta sum of the top and the sides. The area of the top would be , the area of the sides would be . Then the total area would be
- Then the radiation heat transferred to the can would be .
- The can would lost heat evaporating water, in this case would be , where is the rate of mass of water evaporated and, is the heat of vaporization of the water ().
- Then in the conservation balance: , it would be.
- Recall that , then solving for :
Answer:
<h2>18 N</h2>
Explanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question we have
force = 6 × 3
We have the final answer as
<h3>18 N</h3>
Hope this helps you
The question is poor. Light doesn't refract on its way THROUGH anything. It refracts at the boundary BETWEEN two different media. The effect is greatest where the ratio of the speeds of light in the two media is greatest. On your list, that would be at the boundary between air or space and glass.
A) We balance the masses: 4(1.00728) vs 4.0015 + 2(0.00055)4.02912 vs. 4.0026This shows a "reduced mass" of 4.02912 - 4.0026 = 0.02652 amu. This is also equivalent to 0.02652/6.02E23 = 4.41E-26 g = 4.41E-29 kg.
b) Using E = mc^2, where c is the speed of light, multiplying 4.41E-29 kg by (3E8 m/s)^2 gives 3.96E-12 J of energy.
c) Since in the original equation, there is only 1 helium atom, we multiply the energy result in b) by 9.21E19 to get 3.65E8 J of energy, or 365 MJ of energy.