Ablock is moving at constant speed due to a horizontal force pulling to the right. the coefficient of kinetic friction, hk, between the block and the surface is 0.20 and the mag- nitude of the frictional force is 100.0 n, what is the weight of the block? (a 400 n (b) 600 n (c) 500 n (d) 267 n

Which is the most accurate name for the ionic compound cas?

Aparticle of mass m is placed in a one-dimensional box of length l. the box is so small that the particle’s motion is relativistic, so that e p2/2m is not valid. (a) derive an expression for the energy levels of the particle using the relativistic energy–momentum relation and the quantization of momentum that derives from connement. (b) if the particle is an electron in a box of length l 1.00 1012 m, nd its lowest possible kinetic energy. by what percent is the nonrelativistic formula for the energy in error?

Using a caesar cypher with an offset of three characters (a -> d, b -> e, z -> c), what would be the correct cypher text for the plain text "attack at dawn"?