Assume a hydrogen atom is a sphere with diameter 0.100 nm and a hydrogen molecule consists of two such spheres in
contact. (a) What fraction of the space in a tank of hydrogen
gas at 0°C and 1.00 atm is occupied by the hydrogen mole-
cules themselves? (b) What fraction of the space within one
hydrogen atom is occupied by its nucleus, of radius 1.20 fm?

What is tan(61)? а. 1.80 b. 0.49 c. 0.61 d. 0.87

The plum pudding model of the atom state that ?

Three different objects, all with different masses, are initially at rest at the bottom of a set of steps. each step is of uniform height . the mass of each object is a multiple of the base mass : object 1 has mass 4..00m , object 2 has mass 1..96m , and object 3 has mass . when the objects are at the bottom of the steps, define the total gravitational potential energy of the three-object system to be zero. if the objects are then relocated as shown, what is the new total potential energy of the system? each answer requires the numerical coefficient to an algebraic expression. each algebraic expression is given using some combination of the variables , , and , where is the acceleration due to gravity. enter only the numerical coefficient. (example: if the answer is 1..23mgd , just enter 1.23)