A1800-kg jeep travels along a straight 500-m portion of highway (from a to b) at a constant speed of 10 m/s. at b, the jeep encounters an unbanked curve of radius 50 m. the jeep follows the road from b to c traveling at a constant speed of 10 m/s while the direction of the jeep changes from east to south. what is the magnitude of the frictional force between the tires and the road as the jeep negotiates the curve from b to c?

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?

What is a carrier wave and how does it affect what you hear on the radio

Which situation will produce the greatest change of momentum