1. Selena has a fire in her fireplace to warm her 20oC apartment. She realizes that she has accidentally left the iron poker (α iron = 1.2 x 10 - 5oC -1) in the fire. How hot is the fire if the 0.60-meter poker lengthens 0.30 cm?

In the sport of parasailing, a person is attached to a rope being pulled by a boat while hanging from a parachute-like sail. a rider is towed at a constant speed by a rope that is at an angle of 15 ∘ from horizontal. the tension in the rope is 1900 n. the force of the sail on the rider is 30∘ from horizontal. what is the weight of the rider? express your answer with the appropriate units.

In which of the following cases is work being done on an object? question 2 options: pushing against a locked door carrying a box down a corridor pulling a trailer up a hill suspending a heavy weight with a strong

Explain the consequences of this addiction to the brain tissue