Oliver lives Salalah. He wants to attend a meeting in Mirbat, 70 km away from Salalah, at morning 10:00am. He started from his apartment at 9:00 am. Due to traffic in the city, he could cover only 20 km by 9:20am. Thereafter he adjusted his speed and reached Mirbat at 10:00am.
His average speed from 9:00 to 9:20 am(70km/h 75km/h 60km/h 40km/h)
Average speed from 9:20 to 9:45 am
Average speed of entire trip

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:

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge

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