Aperson pushes horizontally on a heavy box and slides it across the level floor at constant velocity. the person pushes with a 60.0 n force for the first 7.09 m, at which time he begins to tire. the force he exerts then starts to decrease linearly from 60.0 n to 0.00 n across the remaining 7.09 m. how much total work did the person do on the box?

If the textbook weighs 19.6 newtons on venus, what is the strength of gravity on venus?

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2

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.