A 25 g object is pressed against a spring causing the spring to compress 5 cm. the spring constant is 300 N/m. if the object moves vertically when released, what is the maximum height the object will reach?

what maximum height will the box reach if 0.1 j of energy is lost due to air resistance?

the spring is turned horizontally, and the same object is used to compress the spring by the same amount. if friction is negligible, what is the speed of the object when the spring is released?

how much force did it take to compress the spring?

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.