A car is travelling at 70 mph and and a lorry is travelling at 50 mph calculate the speed of the car relative to the lorry

there are no correct statementd on the list of choices you provided.

b.a device that inputs heat into a cool object

as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

not copied too! hope this !

joke:

h o h o hope you have a merry christmas!