A mother elephant is 165 away from her mischievous calf, which is drinking water from a pond. She spots a hunter coming towards the calf and immediately warns it by letting out a trumpeting sound. (i) If the trumpeting sound is in sonic region (frequency = 1000 ), what will be the time taken by the sound to reach the calf?
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On average, newborn calves stand about 1 m (3 ft.) high and weigh 120 kg (264 lb.) at birth. Newborn male African elephants may weigh up to 165 kg (364 lb.). Newborn Asian elephant calves weigh about 91 kg (200 lb.).
The newborn is helped to its feet by its mother and other females. Calves are able to stand on their own within minutes of birth.
The mother and other females help guide the calf to nurse almost immediately. The trunk of the calf is still short, so it uses its mouth to nurse.
Calves are able to walk within one to two hours of birth.
Within two days, calves are strong enough to join the rest of the herd, which is waiting patiently nearby.
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