Physics, 06.03.2020 19:12 tylerwoodson
1. A 1800 g grenade is a rest on a table when it undergoes an elastic explosion, separating into three
pieces of mass 0.60 kg, 0.50 kg, and 0.70 kg. The 0.60 kg piece has velocity 3.5 m/s [W] and the 0.50
kg piece has velocity 4.0 m/s [S42°E). Find the velocity of the third piece.
Answers: 3
Physics, 22.06.2019 02:30, estrellagutierrez12
Which type of bond is found between the atoms of a molecule? a. metallic b. delocalized electron c. covalent d. ionic
Answers: 1
Physics, 22.06.2019 07:10, cannan
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?
Answers: 2
Physics, 22.06.2019 11:30, animaljamissofab
Acaterpillar tries to climb straight up a wall a meter high, but for every 2 cm up it climbs, it slides down 1 cm. eventually, it reaches the top. when it reaches the top, it does not pull itself over so it will slide down 1 cm. what is the total displacement traveled?
Answers: 3
1. A 1800 g grenade is a rest on a table when it undergoes an elastic explosion, separating into thr...
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