20. The diagram below shows a closed system of two tanks that each contain water. 140 mL of water
140 mL of water
at 20°C
at 72°C
When the valve between the two tanks of water is opened, the temperature of the water in each tank
changes. What is the equilibrium temperature to the nearest whole degree Celsius?
Record your answer on the answer document.

I'm kinda lost ! 1. when marilyn takes her pet dog for a walk, the dog walks at a veryconsistent pace of 0.55 m/s. draw a position-time graph to representmarilyn's dog walking the 19.8 m distance from the front of her house tothe nearest fire hydrant.2. both car a and car bleave school when a stopwatch reads zero. car atravels at a constant 75 km/h, and car b travels at a constant 85 km/h.a) draw a position-time graph showing the motion of both cars. howfar are the two cars from school when the stopwatch reads 2 hrs? calculate the distances and show them on your graph.b) both cars passed a gas station 120 km from the school. when dideach car pass the gas station? calculate the times and show themon your graph.3. the figure below shows the position-time graph showing a shopper'smovement up and down the aisle at a store.a) write a story describing the shopper's movements at the store.b) when does the shopper have a position of 6 m? c) how much time passes between when the shopper enters the aisleand when he gets to a position of 12 m? what is the shopper's averagevelocity between 37 s and 46 s?

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?