Leah is using a 3.4-meter ladder to paint the exterior of her house. leah has a mass of 50 kilograms. the acceleration due to gravity is equal to 9.8 meters per second squared. what force, in newton’s, does leah exert on the ladder when standing on it?

The two required components for a generator

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.

In the first law of thermodynamics, triangle e=q-w, what does q stand for