if a body moves with 20 km per hour in first 1 hour 30 km per hour in second one hour 40 kilometre per hour in third one hour what os the average speed of body

Much of the information taught in earth-space science would not be available if it weren’t for our remote sensing abilities. explain two ways our remote sensing strategies contribute to our knowledge of these topics.

Which atomic model was proposed as a result of j. j. thomson’s work?

Identify the type of heat transfer occurring when chocolate melts in your hand