A kid holds a 0.00979 kg coin in their hand over the edge of a 28.4 m high bridge. How much potential energy is stored in the coin/Earth system?

If you mix chlorine lithium and nickel together which two elements would be the most reactive

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

Determine the change in width a, height b, thickness t when a plate is subjected to the uniform distributed load and is made of material having modulus of elasticity e=230 gpa and poisson's ratio ν=1/3. given : a=400 mm and b= 300 mm also the uniformly distributed load in downward y direction of plate is 2 mn/m and in the positive x direction is 3 mn/m and t=20 mm