Aladder 5.10 m long leans against a wall inside a spaceship. from the point of view of a person on the ship, the base of the ladder is 2.50 m from the wall, and the top of the ladder is 4.45 m above the floor. the spaceship moves past the earth with a speed of 0.87c in a direction parallel to the floor of the ship. find the angle the ladder makes with the floor, as seen by an observer on earth.

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.