m = mass of the ball attached to friction less surface = 2 kg
r = radius of the circle in which the ball moves = 0.5 meter
T = tension force in the string = 16 N
F = centripetal force
centripetal force is given as
F = m v²/r
the centripetal force required to move in circle is being provided by the tension force here , hence we can write
T = F
T = m v²/r
Tr = m v²
v² = Tr/m
v = √(Tr/m)
inserting the values in the equation above
v = √(16 (0.5)/2)
v = 2 m/s
The visible light spectrum or waves will range between the infrared rays and the ultraviolet rays which is letter C. The visible light spectrum are the ones that are considered to be visible to an individual's eye and beyond that, it wouldn't be seen and will only be invisible.
Answer :
(A) Time period sec
(B) Angle is independent of weight.
Explanation:
Given :
Length of fastened arm m
Length of cable m
(A)
Time of one revolution is
Total radius of circle is m
Total force in horizontal direction X- direction
Since
Total force in Y - direction,
Comparing both equation,
Where
So time period,
s
(B)
Mass is cancelled out, so the angle is independent of weight.
Answer:
The observations show a higher velocity than is predicted, mainly in the galaxy's outer regions, indicating that there is more mass in the exterior areas than we can see.
Some examples of decomposers include bacteria, fungi, and some insects. If decomposers disappeared from a forest ecosystem, wastes as well as the remains of the dead organisms would pile up, and producers (plants) would not have enough nutrients.