Una esfera de hierro de 3 cm de radio se deja caer en un estanque lleno de agua de 120 cm de profundidad. Calcular: a) Peso de la esfera
b) Empuje
c) Fuerza resultante
d) Aceleración de la esfera
e) Tiempo que tarda en llegar al fondo

Find v1, the speed of the fluid in the left end of the main pipe. express your answer in terms of h1, h2, g, and either a1 and a2 or γ, which is equal to a1a2.

You are a researcher for a golf club manufacturer. you are given two identical looking cubes of a metal alloy. you are informed that they are made of the exact same material, but one is crystalline, whereas the other is amorphous. it is your job to determine which one is amorphous this one is more stress-resistant and is useful in reinforcing golf clubs. which of the following is the best way to determine which is which? a. determine the density of each cube. the more dense one is the amorphous solid. b. melt both cubes and look for a broader range of melting temperatures. the one that melts over a broader range of temperatures is the amorphous solid. c. determine the density of each cube. the less dense cube is the amorphous solid. d. melt both cubes and measure the range of melting temperatures. the one that melts over a narrower range of temperatures is the amorphous solid.

Due in 40 explain in terms of frame of reference if you’re inside a moving train everything on the outside can seem to be moving