a) The one with the higher capacity will have smaller change in temperature
b) Yes, because the total energy is saved (enclosed) inside.
c) Heat from hot iron heats the water, then if there is still enough heat, the water can boil and evaporate
d) Q2+Q1=0, Q1 is for Iron and Q2 is for water
-C1M1(t-T1)=C2M2(t-T2)
C.
e) Closed system (isolated system) because the energy is transferred only between water and iron.
f) It would be smaller.
Hi!
The energy of the block is 4 m/s
To calculate this, you need to use the equation for
kinetic energy. The block is sliding (i.e. it's moving). If the object is sliding across a level surface, the only energy it has is kinetic energy, because
there is no change in potential energy (which changes with height). So, the mechanical energy will be pure kinetic energy. The equation is the following, derived from the expression for kinetic energy:
Have a nice day!
According to early ideas of current flow, current in an electrical circuit
is the flow of positive charges. (a) .
This concept became firmly planted in the world of electricity, and
things really got complicated when it was discovered that electrons
are the things that flow in an electric current, and electrons carry
NEGATIVE charge.
Is there a certain context to this question so that I can answer it better?
Answer:
Explanation:
Induced EMF in the coil is given by the equation
so we have
also we know that rate of change in current in solenoid is given as
so induced EMF of coil is given as
now induced current in the coil will be given as