In a potato race 20 potatoes are placed in a line at intervals of `4m e t e r s` with first potato `24m e t r e s` from the starting point. A contestant is required to bring the potatoes back to the starting place one at a time. How far would he run in bringing back all the potatoes?

In a potato race 20 potatoes are placed in a line at intervals of 4m e t e r s with first potato 24m e t r e s from the starting point. A constant is required to bring the potatoes back to the starting place one at a time. How far would he run in bringing back all the potatoes?

In a potato race, a bucket is placed at the starting point, which is 7 meter from the first potato. The other potatoes are placed 4 m a part in a straight line from the first one. There are n potatoes in the line. Each competitor starts from the bucket, picks up the nearest potato, runs back with it, drops in the bucket, runs back to pick up the next potato, runs to the bucket and drops it and this process continues till all the potatoes are picked up and dropped in the bucket. Each competitor ran a total of 150 m. The number of potatoes is. "____________"

In a potato race, a bucket is placed at the starting point, which is 5 m from the first potato, and the other potatoes are placed 3 m apart in a straight line. There are ten potatoes in the line (see Figure). A competitor starts from the bucket, picks up the nearest potato, runs back with it, drops it in the bucket, runs back to pick up the next potato, runs to the bucket to drop it in, and she continues in the same way until all the potatoes are in the bucket. What is the total distance the competitor has to run? [Hint : To pick up the first potato and the second potato, the total distance (in metres) rim by a competitor is 2 x 5 + 2 x (5 + 3)]

In a potato race, a bucket is placed at the starting point, which is 5 m from the first potato, and the other potatoes are placed 3 m apart in a straight line. There are ten potatoes in the line (see Figure).A competitor starts from the bucket, picks up the nearest potato, runs back with it, drops it in the bucket, runs back to pick up the next potato, runs to the bucket to drop it in, and she continues in the same way until all the potatoes are in the bucket. What is the total distance the competitor has to run?[Hint : To pick up the first potato and the second potato, the total distance (in metres) rim by a competitor is 2 x 5 + 2 x (5 + 3)]

A 20 H inductor is placed in series with 10 W resistor and an emf of 100 V is suddenly applied to the combination. At t = 1 s from t = 1 s from the start, find the rate at which energy is being stored in the magnetic field around the inductor (givne e^(-0.5)=0.61 ).

A sound source S, emitting a sound of frequency 400 Hz and a receiver R of mass m are at the same point. R is performing SHM with the help of a spring of force constant K. At a time t = 0, R is at the mean position and moving towards the right, as shown. At the same time, the source starts moving away from R with some acceleration a. The frequency registered by the receiver at a time t = 10 s is 250 Hz. What is the time (in seconds) at which the corresponding registered frequency of 250 Hz was emitted by the source? [Given that (m)/(K)=(25)/(pi^(2)) and amplitude of oscillation = (100)/(pi) m, V_("sound") = 320 m s^(-1)]

A rectangular frame of wire is placed in a uniform magnetic field directed outwards , normal to the paper . AB is connected to a spring which is stretched to A'B' and then released at time t=0. Explain qualitatively how induced e. m .f in the coil would very with time . (Neglect damping of oscillations of spring).

A river flows due south with a speed of 2.0 ms^-1 . A man strees a motorboat across the river , his velocity relative to the water is 4 m s^-1 due east. The river is 800 m wide. (a) What is his velocity (magnitude and direction) relative to the earth ? (b) How much time is required to cross the river ? ( c) HOw far south of his starting points will he reach the opposite bank ?

The cost of papering four walls of a room at 70\ p a i s e\ p e r\ s q u a r e\ m e t e r is R s .157.50. The height of the room is 5\ m e t r e sdot Find the length and the breadth of the room if they are in the ratio 4:1

The length and bredth of a hall are in the ratio 4:3 and its height is 5. 5m e t r e sdot The cost of decorating its walls (including doors and windows) at R s .6.60p e rs q u a r em e t r e is R s .5082. Find the length and breadth of the room.