A 12 g bead is strung on a long, straight wire. It is accelerated, with no friction, by a force that acts at an angle to the wire. If the force has a constant value of 0.15N and acts over a distance of 75 cm and if the bead's final speed is 3.0 m/s and it starts at 1.0m/s, what is the angle between the force and the wire? Be sure to convert to MKS units (meters, kilograms, seconds).F

The heater element of a 120 v toaster is a 5.4 m length of nichrome wire, whose diameter is 0.48 mm. the resistivity of nichrome at the operating temperature of the toaster is 1.3 × 10-6 ω·m. the toaster is operated at a voltage of 120 v. (a) what is the power drawn by the toaster? (b) if the cost of electricity is 12 ¢ per kilowatt-hour, and it takes 2 minutes to toast bread, how much does it cost for toasted bread? (c) when the heater element is at room temperature, is the resistivity in the nichrome wire greater than, less than, or equal to it’s resistivity when at operating temperature? explain.