You have been mining for gold and you have found a nugget and are about to be rich. the density of the gold is 19.3 grams/cubic centimeter or g/cc. your sample has a mass of 972 grams and is nearly a perfect cube, each side measuring 3 cm. find the the density of your sample (hint: you must find the volume of the cube first). after you've done this compare the given density of gold to your calculated value. is your sample pure gold? explain.

How many electrons in an atom could have these sets of quantum numbers? =3n=3 electronselectrons =4,ℓ=2n=4,ℓ=2 electronselectrons =6,ℓ=ℓ=−1n=6,ℓ=2,mℓ=−1

On a horizontal frictionless surface, a small block with mass 0.200 kg has a collision with a block of mass 0.400 kg. immediately after the collision, the 0.200 kg block is moving at 12.0 m/s in the direction 30° north of east and the 0.400 kg block is moving at 11.2 m/s in the direction 53.1° south of east. use coordinates where the +x-axis is east and the +y-axis is north.(a) what is the total kinetic energy of the two blocks after the collision (in ) what is the x-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your ) what is the y-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your answer.)

A200 g lead frying pan gains 2000 joules of heat. what is the change in temperature