Answer: Final Temperature= 40.57 deg C; Latent Heat of Fusion of Ice= 80.14 cal/g
Explanation:
The system is said to be isolated to the surroundings. All energy must remain inside the system. We can state that no loss of energy takes place, thus,
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Answer:
F = 1.6*10⁴ N
Explanation:
Given distance x = 0.15m, mass m = 1200kg, velocity v = 2m/s.
Unknown: force F
Force is given by Newton's law:
(1)
The average force to stop an object from a velocity will be the same force necessary to accelerate an object from rest to the same velocity.
The distance for an object starting from rest for a constant acceleration is given by:
(2)
The velocity for an object starting from rest for a constant acceleration:
(3)
Using equation 2 and 3 to eliminate time t:
(4)
Solving equation 4 for the acceleration a:
(5)
Using equation1 to solve for the force F:
(6)
The amount of charge enters (and leaves) is 12 Coulomb.
<h3 /><h3>How can we find the value of the amount of charge enters (and leaves)?</h3>Here we are using the formula,
and
We are given,
P = Power of the light bulb = 25 Watt.
V = The amount of voltage where the light bulb operated = 120 Volt.
t= The time when charge enters (and leaves) the light bulb = 1.0 min = = 60 S
We have to find,
I= The amount of current flows in the light bulb.
Q= The amount of charge enters (and leaves) the light bulb.
Now we substitute the values of known parameters in the first equation, we find that,
Or,
The amount of current flows in the light bulb is 0.20 Ampere.
Now, we put the value of I in the second equation,
Or,
So, from the above calculations we can see that the amount of charge enters (and leaves) the light bulb is 12 Coulomb.
Learn more about the light bulb:
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