Answer:
The magnitude of force on P is 2.75 N
The magnitude of force on Q is 7.15 N
Solution:
As per the question:
Mass of the object, M = 11.0 kg
Acceleration of the object when the forces are directed leftwards, a = 
Acceleration when the forces are in opposite direction, a' = 
Now,
The net force on the object in first case is given by:
(1)
The net force on the object in second case is given by:
(2)
Adding both eqn (1) and (2):


Putting the above value in eqn (1):


Answer:
Quantity of charge = 1800 Coulombs
Explanation:
Given the following data;
Current = 1 A
Time = 0.5 hours
Conversion:
1 hour = 60 * 60 = 3600 seconds
0.5 hour = 0.5 * 3600 = 1800 seconds
To find the charge passing through the wire;
Mathematically, the quantity of charge passing through a conductor is given by the formula;
Quantity of charge = current * time
Substituting into the formula, we have;
Quantity of charge = 1 * 1800
Quantity of charge = 1800 Coulombs
Answer:
100kg
Explanation:
Momentum is defined as the product of mass times velocity:

The total momentum M must be equal to the sum of momentums of the system components, in this case the momentum of the lady plus the momentum of the cart:

since both the woman and the shopping cart have the same velocity:

the equation becomes:

and since we need the mass of the cart we solve for
:

the values given by the problem are the following:
total momentum: 
mass of the woman: 
velocity: 
we substitute all of them in the equation to find the mass of the shopping cart:

the mass of the cart is 100kg.
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