Read the story and answer the questions : Ridley, the turtle was very happy to see his friend Olay, the snail. They both went to swim in a pond. While swimming they have seen some small fish in the water. Ridley said to Olay that they are not fishes they are tadpoles, the young ones of frog. Olay got confused. Frog lives in land then how frog's babies are in water? Won't they die?? All of a sudden they have seen a crocodile and got scared and swim back to the land. 1. Name the outer covering of turtle and snails. 2. How tadpoles can live in water? 3. Why frog is known as an amphibian? 4. Olive Ridley turtles migrate from sea to shore why? 5. Name the body covering of crocodile.

Search coils and credit cards. one practical way to measure magnetic field strength uses a small, closely wound coil called a search coil. the coil is initially held with its plane perpendicular to a magnetic field. the coil is then either quickly rotated a quarter-turn about a diameter or quickly pulled out of the field. (a) derive the equation relating the total charge q that flows through a search coil to the magnetic-field magnitude b. the search coil has n turns, each with area a, and the flux through the coil is decreased from its initial maximum value to zero in a time ∆t. the resistance of the coil is r, and the total charge is q = i∆t, where i is the average current induced by the change in flux. (b) in a credit card reader, the magnetic strip on the back of a credit card is rapidly “swiped” past a coil within the reader. explain, using the same ideas that underlie the operation of a search coil, how the reader can decode the information stored in the pattern of magnetization on the strip. (c) is it necessary that the credit card be “swiped” through the reader at exactly the right speed? why or why not?

Select all that applywhat are some basic resources a family is expected to provide for children? educationclothesspending

Abar magnet cut in half will form a total ofpoles.a)fourb)eightc)two