Answer:
The separation between the charges was decreased by a factor of 0.2
Explanation:
The Coulomb's force between two charges is given by;

r₂ = 0.2r₁
Therefore, the separation between the charges was decreased by a factor of 0.2.
Since the car is at rest, the force experienced by car will be normal face(exerted by surface to which car is in contact) and weight of the car.
As the car is at rest, net force on the car should be zero.
Answer:
Atmospheric pressure is commonly measured with a barometer. In a barometer, a column of mercury in a glass tube rises or falls as the weight of the atmosphere changes. Meteorologists describe the atmospheric pressure by how high the mercury rises.
Explanation:
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Answer:
lever is the correct answer to the given question .
Explanation:
The main purpose of wheel and axle to Migrating the particles as well as elevate the objects and the people.The wheel is the rounded disk or it may be the the rectangular outer part and the axle is the curved cylinder.
- The axle is operating via the center square So they are connected to the various object.
- The wheel and the axle applications involve trying to lifting the large loads as well as pushing the things rapidly.