Answer:
The temperature would fall.
Explanation:
The question can be solved by using first law of thermodynamics.
The law states:
The change in internal energy of the system is equal to the heat energy supplied to the system minus the workdone by the system.
ΔU = Q - W
where ΔU is change in internal energy of the system
Q is energy given to the system
W is workdone by the system
Because the charges are repelling each other it means they will move away from each other and their repulsive forces will do positive workdone (workdone is defined as distance moved in the direction of the force applied). Therefore W > 0.
There is no energy supplied to the system so Q = 0.
Using the relation ΔU = Q - W we can see that if Q = 0 and W > 0 then ΔU < 0. Hence internal energy of the system falls so the temperature falls.
Answer:
D
Explanation:
Can you please mark brainiest
and I think it's d because you were at the same sowed as the car but as it turn you moved the other way because of the pull of friction and your weight
hope it helps
Power = (1000 kilo-Watt-hr/mo) x (1000/kilo) x (mo/30day) x (day/24 hr)
Power = (1000 x 1000 / 30 x 24) (kilo-watt-hr-mo-day/mo-kilo-day-hr)
Power = (1,000,000/720) watt
(voltage x current) = (1,000,000/720) watts
120v x current = (1,000,000/720) watts
Current = 1,000,000 / (720 x 120) Amperes
<em>Current = 11.57 Amperes</em>
Answer: <em>I = </em>Δ(N*B*A) / R*Δt
and
<em>I= ΔФ </em>/ <em>R*Δt</em>
Explanation:
what is electromagnetic induction?
electromagnetic induction is a mechanism where current is induced in a coil or loop. To be specific Faraday's law of electromagnetic induction says that induced EMF is proportional to the induced current or emf.
FORMULA
<em>I= ΔФ </em>/ <em>R*Δt</em>
<em>BY EXPANDING THE FORMULA WE GET</em>
<em>ΔФ= </em>Δ(N*B*A)
by putting the value in equation we get:
<em>I = </em>Δ(N*B*A) / R*Δt
where A is area of circular coil π*r²
DATA
N is number of turns in the coil
r is radius of the circular coil
ΔB is magnetic field
Δt is time
R is resistance of coil
Potential Energy = mass x gravity x height
PE = mgh
PE = 250kg x 9.8 m/s^2 x 50m
PE = 118,750 joules = 118kJ