Answer:
Explanation:
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A helicopter is dropping a package of rescue supplies to a group of stranded hikers. If it drops the supplies while it is hoveri
1 answer:
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Answer:
The moment of inertia of the wheel is 0.593 kg-m².
Explanation:
Given that,
Force = 82.0 N
Radius r = 0.150 m
Angular speed = 12.8 rev/s
Time = 3.88 s
We need to calculate the torque
Using formula of torque
Now, The angular acceleration
We need to calculate the moment of inertia
Using relation between torque and moment of inertia
Hence, The moment of inertia of the wheel is 0.593 kg-m².
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Answer:
a.
b.
Explanation:
#Apply surface charge density, electric field, and Gauss law to solve:
a. Surface charge density is defined as charge per area denoted as
, and the strength of the electric field outside the sphere
Using Gauss Law, total electric flux out of a closed surface is equal to the total charge enclosed divided by the permittivity.
#surface charge outside sphere.
Hence, the new charge density on the outside of the sphere is
b. The strength of the electric field just outside the sphere is calculated as:
From a above, we know the new surface charge to be ,
Hence, the strength of the electric field just outside the sphere is