Explanation:
1) The bob of pendulum should be displaced with a small angle. 2) The amplitude of the oscillation of a simple pendulum should be small. 3) Fans should be switched off to reduce the air resistance. 4)The simple pendulum should be oscillate in a vertical plane only.Feb 23, 2019
Answer:
C) Pnew=Poriginal/9
Explanation:
From the given conditions:
Original area, 
New area of the barrel bottom panel after increasing by a factor of 3:
On increasing the radius the area now becomes:
As we know that there will be no increase in the down-force since the height remains constant.
Pressure is given as:
∴New pressure:
When scientific work can be duplicated it is proves a hypothesis is reliable.
For the record, in science, hypotheses can never be proven correct, and they always require evaluation. Even if a hypothesis still holds after being tested many times, it will always remain open to question.
How Do Hydrogen Fuel Cell Vehicles Work? Fuel cell vehicles use hydrogen gas to power an electric motor. Unlike conventional vehicles which run on gasoline or diesel, fuel cell cars and trucks combine hydrogen and oxygen to produce electricity, which runs a motor.
True is the anwser to your question
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