The nucleus is always positive since thats where the protons are located and the neutrons have no charge....
Answer:
.c. −160°C
Explanation:
In the whole process one kg of water at 0°C loses heat to form one kg of ice and heat lost by them is taken up by ice at −160°C . Now see whether heat lost is equal to heat gained or not.
heat lost by 1 kg of water at 0°C
= mass x latent heat
= 1 x 80000 cals
= 80000 cals
heat gained by ice at −160°C to form ice at 0°C
= mass x specific heat of ice x rise in temperature
= 1 x .5 x 1000 x 160
= 80000 cals
so , heat lost = heat gained.
Answer:Net Force is zero
Explanation:
Given
Car is moving to the left with constant velocity i.e. net force on the car is zero
because change in velocity with respect to time is acceleration thus force is also zero because net acceleration is zero
Mathematically
acceleration
as velocity is constant therefore 
thus a=0 , F=0
Answer:
I would like aliens if they exist
Explanation:
