Choose whether each of the following statements is true or false
1 answer:
Answer:
1. The statement is false.
2. The statement is false.
Explanation:
1. When a ball is thrown vertically up, the air drag is acting downwards which reduces the time the ball spends traveling upwards, but the air drag is acting upwards while the ball is falling, which increases the time the ball spends traveling downwards.
Thus, the statement is false.
2. The potential energy of a particle is given by
where, is the mass of the object,
is the acceleration due to gravity and
is the vertical height traveled by the object.
It does not depend on th initial velocity of the object.
Thus, the statement is false.
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Answer:
b)1 :3
Explanation:
Lets that
The value of a positive charge = q
As we know that electric filed on a point charge given as
Where ,K=Constant
q=Charge ,r=Distance
If the value of the charge gets tripled ,q'= 3 q
Then electric filed E'
E' = 3 E
Therefore we can say that
therefore the answer will be --
b)1 :3