Place the square aluminum block with a weight of 27 N and a side length of 10 cm in the center of the horizontal desktop with an area of 0.5 square meters (1) What is the pressure on the table (2) Now put an object with a mass of 1kg on the aluminum block. What is the pressure of the aluminum block on the table? (g takes 10N / kg) The kxxx train from Hangzhou to Meilong, Shanghai runs 168 km. The timetable of the train is as follows: Train time: Meilong, Linping, Hangzhou Arrival time of kxxx - 7:28 8:59 Driving time 7:10 7:30—— It can be seen from the table that what is the total running time and average speed of kxxx train? | Math enthusiast | Mathematical art

Place the square aluminum block with a weight of 27 N and a side length of 10 cm in the center of the horizontal desktop with an area of 0.5 square meters (1) What is the pressure on the table (2) Now put an object with a mass of 1kg on the aluminum block. What is the pressure of the aluminum block on the table? (g takes 10N / kg) The kxxx train from Hangzhou to Meilong, Shanghai runs 168 km. The timetable of the train is as follows: Train time: Meilong, Linping, Hangzhou Arrival time of kxxx - 7:28 8:59 Driving time 7:10 7:30—— It can be seen from the table that what is the total running time and average speed of kxxx train?

1)P=F/S=27/0.1^2=2700Pa
2)P'=(G+G')/S=(27+10)/0.1^2=3700Pa
One hour 45 minutes = 105 minutes
168/[(18+60+29)/60]=94.2Km/hr

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