A person goes to bed at shasrp 10.00 pm every day. Is it an example of periodic motion? If yes, what is the time period? If no why?

Two indentical point charges having magnitude q each are placed as shown if fig. If we place a negative cahrge (of magnitude -q and mass m)at the midpoint of charges and displaced along the x-axis, examine whether it will perform simpe harmonic motion. If yes then find the time period of oscillation of the particle.

Does cos omegat +sin2 omega t +cos 4 omega t represent periodic motion ? If yes, then find the period ( omega is any positive constant) . Hint : ( Each term represents a periodic function with different angular freuency . Find the smallest interval of time after which the sum of three terms repeats ) .

What is Periodic Motion ? Give an example.

Time period of a wave is 5xx10^(-3)s, what is the frequency?

Two satellites A and B revolve around a plant in two coplanar circular orbits in the same sense with radii 10^(4) km and 2 xx 10^(4) km respectively. Time period of A is 28 hours. What is time period of another satellite?

Two towns A and B are connected by a regular bus service with a bus leaving in either direction every T min. A man cycling with a speed of 20 km h^(-1) in the direction A to B notices that a bus goes past him every 18 min in the direction of his motion, and every 6 min in the opposite direction. What is the period T of the bus service and with what speed (assumed constant )do the buses ply on the road?

The beat frequency of heart of a person is 1.35 H z. How many times, does it beat in a minute ? What is the time period ? Hint : Number of oscillations in 1s =1.35 Find number of oscillations in 60 s , and T= (1)/(v)

At radioactive equilibrium, the ratio between two atoms of radioactive elements A and B is 3.1 xx 10^(9) : 1 . If the half-life period of A is 2 xx 10^(10) years, what is the half-life of B ?

In a shm, what is the minimum time required for a particle to move between two points 10 cm on either side of the mean position ? The amplitude and time period of the particle are 20 cm and 2 seconds respectively.