1) A sofa is pushed with a force of 600 N at an angle of 22 degrees to the direction of displacement of that sofa. if it is displaced 4.6 meters, then how much work was done to move the sofa? 2) A crane is used to lift an air conditioner straight to the roof of a building. the building is 35 meters tall. the air conditioner has a mass of 280 kg. how much work is done to lift the air conditioner to the top of the building.
(please show work or an explanation as to how to do it :)

Determine the maximum r-value of the polar equation r =3+3 cos 0

Gather reliable information to brent make his decision. to gather this information, use newspapers, call insurance companies or look at their web sites, and review consumer magazines and web sites. also, look at the manufacturer web site or for information about gas mileage. list the sources you use and take notes.

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.