Mass of the object is given as

now the speed of object is given as

here we know that


now we will have

now we will have kinetic energy of the object as



now the power is defined as rate of energy
so here we can find power as


so above is the power used for the object
Answer:
Explanation:
Applying conservation of momentum
mA v0 + 0 = mA x 12v0 + mB x 92v0
11 mA = - 92mB .
mA / mB = 92 / 11
mA : mB = 92 : 11.
A and c should be the answer
Answer with Explanation:
We are given that
Resistivity of copper wire=
Diameter=d=
Radius of copper wire=
Radius of solenoid=r'
1 m=100 cm
a.Length of wire=l=11.3 m
Area of wire=A=
Where 
A=
Resistance, R=
Using the formula


B.Length of solenoid=
m
Number of turns=
=60
C.Potential difference,V=3 V
Current,I=
I=
D.Total length =0.1 m
Number of turns per unit length,n=
Magnetic field along central axis inside of the solenoid,B=
