What is the SI unit for momentum?
2 answers:
Answer : The S.I unit of momentum is, kg • meters per second
Explanation :
Momentum : It is defined as the motion of a moving body. Or it is defined as the product of mass of velocity of an object.
Formula of momentum is:
where,
p = momentum
m = mass
v = velocity
The unit of mass of kilogram (kg) and the unit of velocity is meter per second (m/s).
Thus, the unit of momentum will be:
Thus, the S.I unit of momentum is, kg • meters per second
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Answer:
True
Explanation:
When a ray travelling parallel to the principle axis of a concave mirror then the light ray reflect out through the mirrors and passing through the focus.
When a light ray travelling through focus of a concave mirror then after reflection the light ray reflect out through the mirror and go parallel to principle axis.
Therefore, rays travelling parallel to the principle axis of a concave mirror will reflect out through the mirrors focus.
It is true.
Explanation :
It is given that,
Potential energy,
Power dissipated,
We know that the power dissipated is given by :
I is the current passing through the phone.
or
I = 0.018 A
Hence, the current that passes through the phone is (1) 0.018 A.