How much heat is needed to melt 1.5kg of ice and then to raise the temperature of the
1 answer:
You might be interested in
Answer:
Velocity of electron will be
Explanation:
We have given distance across the plate d = 2 mm
Potential difference V = 6 volt
We know that potential difference at any distance is given by
V = Ed , here V is potential difference, E is electric field and d is distance
So
Charge on electron
We know that expression of velocity is given by , here q is charge on electron, E is electric field and d is distance
So
Answer:
Mechanical energy = 3.92 J
exactly 3.92 j
Explanation:
As we know that mechanical energy is sum of kinetic energy and potential energy of the system
so here we can say that mechanical energy is sum of kinetic energy of ball and its potential energy
Since ball is at rest so kinetic energy of the ball must be ZERO
Now for potential energy we know that
now we know
m = 0.2 kg
h = 2 m
now for potential ene'rgy
so mechanical energy is given as
Mechanical Energy = 3.92 + 0 = 3.92 J