Nebulas, because nebulas contain the gas needed to form a star and comets/planets/ asteroids are rocks not gas
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best and most correct answer among the choices provided by the question is<span> A.
If the uncharged object is a conductor, the charged object can attract opposite
charges. </span></span>
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You get the color yellow :)
As per the question the length of the string is given as 2 metre.
A ball is attached to the string.
The ball is taken above the head and the ball starts swinging.
Swinging motion of a body may be oscillatory or circular. Here the motion is circular.
Here the length of the string will be considered as the radius of the circular path. we are asked to calculate the distance traveled by the ball in each circular rotation.
As the motion is circular, the path covered by the ball in each rotation will be equal to the circumference of the circle.
The circumference of the circle is given as
where C is the circumference.
hence C=2×3.14×2 metre
=.12.56 metre.
Hence distance covered by the ball in each circular rotation is 12.56 metre.
Here the displacement is zero. one should not be confused between distance and displacement.
Answer:
a)
4 times
b)
2 times
c)
0.5 times
d)
0.25 times
Explanation:
= Applied force by the person = F
= distance from the hinge = R
Torque is given as
(a)
= Applied force by the person = 2F
= distance from the hinge = 2R
New Torque is given as
So Torque becomes 4 times
b)
= Applied force by the person = F
= distance from the hinge = 2R
New Torque is given as
So Torque becomes 2 times
c)
= Applied force by the person = (0.5)F
= distance from the hinge = R
New Torque is given as
So Torque becomes 0.5 times
d)
= Applied force by the person = (0.5)F
= distance from the hinge = (0.5)R
New Torque is given as
So Torque becomes 0.25 times