If you balance a book on your head, you are not doing work on the book because a Doing work requires moving an object. b You are not applying any force to the book. c The book is doing work on you. d The book has potential energy.

What is created when solids,liquids,an gases mix with one another

Mass (kg) force (n) 5 25 10 50 15 75 20 100 a student was trying to find the relationship between mass and force. he placed four different masses on a table and pulled them using a spring scale. the table shows the different masses used in the experiment and the force required to pull each mass. the student concluded that more force was required to pull heavier objects. what comment would you make regarding his conclusion? a) no clear relation can be observed between mass and force from the data. b) there is a direct proportion between the mass and force listed in the table. c) gravity should have been taken into account while performing the experiment. d) there is an inverse proportion between the mass and force listed in the table.

The cerebellum controls? thirst sensations sleep-wake cycles hand-eye coordination heart rate and pulse