Which of these letters is the symbol for current in equations A: c B: i C: r D: t
1 answer:
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The mass of ball a is twice the mass of ball b:
This means that the initial potential energy of ball a (
) is twice the potential energy of ball b (
):
When the two balls reach the ground, the potential energy of each ball has converted into kinetic energy (since now their altitude is h=0), because the total mechanical energy of each ball must be conserved. Therefore:
and so the kinetic energy of ball a must be twice the kinetic energy of ball b:
This means that the initial potential energy of ball a (
When the two balls reach the ground, the potential energy of each ball has converted into kinetic energy (since now their altitude is h=0), because the total mechanical energy of each ball must be conserved. Therefore:
and so the kinetic energy of ball a must be twice the kinetic energy of ball b:
Answer:
31.96362 °C
Explanation:
= Mass of air in the room = 947 kg
= Mass of air entering the room = 62.4 kg
= Temperature in the room = 33.2°C
= Temperature air entering the room = 13.2°C
T = Equilibrium temperature
c = Specific heat of air = 1006 J/kg °C
In the case of thermal equilibrium we have the relation
The temperature of thermal equilibrium is 31.96362 °C
Answer:
The amount of heat required is
Explanation:
From the question we are told that
The mass of water is
The temperature of the water before drinking is
The temperature of the body is
Generally the amount of heat required to move the water from its former temperature to the body temperature is
Here is the specific heat of water with value
So
=>
Generally the no of mole of sweat present mass of water is
Here is the molar mass of sweat with value
=>
=>
Generally the heat required to vaporize the number of moles of the sweat is mathematically represented as
Here is the latent heat of vaporization with value
=>
=>
Generally the overall amount of heat energy required is
=>
=>