A mother (mass 60.0 kg) skates across an ice rink with negligible friction toward her child (mass 20.0 kg), who is standing stil
1 answer:
We have that the new speed after she picks up her child is mathematically given as
V2=3m/s
<h3>Speed</h3>The speed of a body is simply the rate at which the body moves or functions, the speed of a body is measured with an SI unit of m/s.
Generally the equation for the Velocity is mathematically given as
m1v1=m2v2
Therefore
V2=3m/s
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Answer:
Explanation:
From the question we are told that
The electric filed is
Generally according to Gauss law
=>
Given that the electric field is pointing downward , the equation become
Here is the excess charge on the surface of the earth
is the surface area of the of the earth which is mathematically represented as
Where r is the radius of the earth which has a value
substituting values
So
Here s the permitivity of free space with value
substituting values
Explanation:
It is given that,
Total weight of the piston, W = F = 70 N
Area of the piston,
Let P is the pressure exerted on the piston by the gas. The force per unit area is called the pressure exerted pressure of the gas. Mathematically, it is given by :
We know that the atmospheric pressure is given by :
So, the pressure is given by :
Hence, this is the required solution.