Answer:
0. 3 s
Explanation:
The motion of the boat is up and down in simple harmonic with amplitude of 20 cm . Time period of oscillation T = 3.5 s and top extreme point is at level with the boarding dock .
The traveller has to wait until the boat reaches middle point ( 1o cm . ) that is half its equilibrium position of oscillation .
Time period is 3.5 s . During its oscillation from extreme top position to its half of the equilibrium position , that is 10 cm below the stationary dock , time taken by boat
t = T / 12 = 3.5 /12 = .3 s .
Man shall have to wait for a period of 0.3 s
Ans 0. 3 s .
Answer:
Speed of sound is 30.91m/s
Explanation:
Speed is given by:
Speed = distance travelled / time taken
Given:
Distance travelled = 1020m
Time taken = 33seconds
Speed = 1020m/33s
Speed = 30.91m/s
334kJ ------ 1kg
x. ------- 0,1kg
x = 33,4kJ
is it right?
Answer:
Explanation:
dr= Width = 30 μm
R = Radius = 1.8 cm
Q =
r = 0.5 cm
Area is given by
Differentiating with respect to r
Surface charge density is given by
Charge is given by
The charge contained in the ring is