What are advantages of using manure?
What are advantages of using manure?
Advantages of manures are:
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Two bodies A and B of equal masses are kept at heights of h and 2h respectively. What will be the ratio of in their potential energies?
What are the source of “concentrates” given in a cattle feed?
| Ion | Valency(Charges) | Ion | Valency(Charge) |
| Sodium ion | 1+ | Bromide ion | 1- |
| Ammonium ion | 1+ | Hydroxide ion | 1- |
| Calcium ion | 2+ | Sulphate ion | 2- |
| Lead ion | 2+ | Phosphate ion | 3- |
The frequency of the sound emitted by the lioudspeaker is 1020Hz. Calculate the wavelength of the sound wave in air in cm where its velocity is 340m/s.