If the speed of light in air is 3.00 times 10 to the 8 m/s power and the speed of light in water is 2.25 times 10 to the 8 power
m/s what is the index of refraction of water
1 answer:
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Answer:
The force is
The time is
Explanation:
From the question we are told that
The mass of the car is
The initial velocity of the car is
The final velocity of the car is
The acceleration is
Generally the acceleration is mathematically represented as
=>
=>
converting to seconds
=>
Generally the force is mathematically represented as
=>
=>
Now converting to foot-pound-second we have
=>
Answer:
Approximately assuming no heat exchange between the mixture and the surroundings.
Explanation:
Consider an object of specific heat capacity and mass
. Increasing the temperature of this object by
would require
.
Look up the specific heat of water: .
It is given that the mass of the water in this mixture is .
Temperature change of the water: .
Thus, the water in this mixture would have absorbed :
.
Thus, the energy that water absorbed was: .
Assuming that there was no heat exchange between the mixture and its surroundings. The energy that the water in this mixture absorbed, , would be the opposite of the energy that the metal in this mixture released.
Thus: (negative because the metal in this mixture released energy rather than absorbing energy.)
Mass of the metal in this mixture: .
Temperature change of the metal in this mixture: .
Rearrange the equation to obtain an expression for the specific heat capacity:
. The (average) specific heat capacity of the metal pieces in this mixture would be:
.