The graph below shows the movement of an object at several points in time. What is the average speed of the object? .5 m/min
.5 m/min

2 m/min
2 m/min

25 m/min
25 m/min

50 m/min

An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.

1. jay fills a wagon with sand (about 20 kg) and pulls it with a rope 30 m along the beach. he holds the rope 25° above the horizontal. the rope exerts a 20-n tension force on the wagon. how much work does the rope do on the wagon?

70 give a real life example showing how sensory neurons work with the motor neurons