Assume that we have a crystal with SC structure with no basis atoms (each atom sits at the Bravais lattice point). The lattice constant is ‘a’. Assume that the crystal is aligned so that each side of the cube is parallel to each of Cartesian Coordinate x, y, and z. Assume an incoming X-ray in a direction of (1,0, -1) with wavelength of (a/sqrt (2)). (a) Construct Ewald sphere. (b) For the reciprocal vectors which fall on the Ewald sphere, represent them in the Cartesian Coordinates. (c) For each of the reciprocal vector on the Ewald sphere, there exist a family of lattice planes. Calculate the spacing of the family of lattice planes for each corresponding reciprocal lattice vector. (d) For each reciprocal vector in (b), represent the direction of the outcoming wave. Calculate the angle between incoming and outcoming waves for each constructive interference.

freezing

deposition

condensation

explanation;

melting also called fusion is the process where solid becomes liquid, sublimation is the process where solid becomes gaseous without first changing to liquid, deposition involves change from gaseous to solid state, freezing involves change from liquid to solid, boiling or evaporation involves change of liquid to gaseous state, while condensation is the change from gaseous state to liquid state.

endothermic reactions involves absorption of heat from the surroundings or the environment while exothermic reactions involves loss of heat energy to the surroundings.

in this case, sublimation, evaporation and melting are endothermic reactions (gain energy from the environment) while, freezing, deposition and condensation are exothermic (loss of energy to the surroundings) reactions.

weather forecasts are done by collecting data about the current state of the atmosphere mainly the temperature, humidity and wind and using meteorology, to determine the atmosphere that evolves over time. the h and l mean the high and low pressure. the red strip is a warm front. the blue strip is a cold front. the blue and red strip is a stationary front. the purple strip is a occluded front.

explanation:

work: w = fd (given)

work done by chet   =50*1 = 50 j

work done by mika =40*2 = 80 j

work done by sara =30*1.5 = 45 j

work done by bill =60*0.5 = 30 j

students in order from the greatest amount of work done to the least is mika> chet> sara> bill

hence option (b) is correct.

the simple machine has three main features. they are:

fulcrum is the center point or pivot point of the machine. effort is input force/ applied force. load is external force/ output.

the keisha 's machine labels are

x : load

y: fulcrum

z: lever