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The Answer Is:
High Quality of Life Come With Restriction On Civil Liberties
Answer:
(b) B
Explanation:
The direction of force on a current carrying wire in a magnetic field can be found using the right hand rule, which states that-"stretch the thumb in the direction of the current, and point the fingers in the direction of magnetic field. The direction of palm will then give the direction of force on the wire
On wire B the forces due to A and C act in the same direction and so strengthen each other. they get added up because the forces act in the same direction.
on wires A and C the forces (due to B and C and A and B
respectively) act in opposite directions and therefore tend to cancel out.
Answer:
The mass of the box, m = 30.61 Kg
The acceleration of the box, a = 0.65 m/s²
Explanation:
Given that,
The weight of the box, w = 300 N
The sliding force acting on the box, F = 20
Since the weight of a body is equal to the product of mass and displacement. The mass of the box is given by the relation
m = w/g
Substituting the given values in the above equation
m = 300 / 9.8
= 30.81 Kg
Hence, the weight of the box is, w = 30.81 Kg
Since the sliding force acting on the box is 20 N
Therefore, acceleration
a = F / m
= 20 / 0.81
= 0.65 m/s²
Hence, the acceleration acting on the box, a = 0.65 m/s²