Answer:
Explanation:
It is given that,
The radius of the solid sphere, R = 50 cm = 0.5 m
Charge on the sphere,
We need to find the magnitude of the electric field r = 10.0 cm away from the center of the sphere. The electric field at point r away form the center of the sphere is given by :
So, the electric field 10.0 cm away from the center of the sphere is . Hence, this is the required solution.
Answer:
Explanation:
Given,
initial angular speed, ω = 3,700 rev/min
=
final angular speed = 0 rad/s
Number of time it rotates= 46 times
angular displacement, θ = 2π x 46 = 92 π
Angular acceleration
speed of sound wave depends on elasticity of medium and density of medium
it is given by formula
now if wave travel through solid then its speed is maximum while if it travel from gas then its speed is minimum
so initially its speed is given as 4000 m/s and suddenly decrease to 1500 m/s
so here we can say that its medium will change from solid to liquid
<em>so sound will encounter with water </em>
The angular acceleration is
Explanation:
To solve this problem we can use the equivalent of Newton's second law for rotational motions:
(1)
where
is the torque acting on the body
I is the moment of inertia of the body
is the angular acceleration
In this problem we have:
is the torque
The moment of inertia of a solid cylinder about its axis is
where
M = 100 kg is the mass
R = 1.2 m is the radius
Substituting,
And solving eq.(1) for , we find the angular acceleration:
Learn more about rotational motions:
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