¿Cuál es la magnitud de la fuerza de atracción entre dos personas, cuyas masas son m1 = 70 kg y m2 =55 kg? La distancia que hay entre ellas es de 1 .5 m. La constante de gravitación universal es G = 6,67 x 10-11 N*m/kg2

Photoelectrons with a maximum speed of 6.50 x 107 m/s are ejected from a surface in the presence of light with a frequency of 6.75 x 1014hz. if the mass of an electron is 9.10 x 10-31 kg, calculate in joules the maximum kinetic energy of a single electron. 3.84 x 10-15 j 1.92 x 10-15 j 5.92 x 10-23 j 3.07 x 10-16 j

Use the profile illustrated for problem (1). assume that the layer of silty sand fill (sm) is placed over the entire site. estimate the thickness of the fill (h - in feet) that will cause the effective vertical stress at the center of the clay layer to increase by 517.5 pounds per square foot.

Acoil suspended freely, points in some direction when no current is passed through it . can you tell what will happen when a current is passed though it?