A1.0 kg book is lifted 0.5 m above the table , but the table is 1.0 m above the floor , what would be the p. e of the book if the reference level where the floor ?

The height of the book from the ground = 1.0 m + 0.5 m = 1.5 m 

The mass of the book = 1 kg

We know that = 



Taking 'g' as 9.8 m/s² and putting the values in the formula we get -



 

B. a circuit. i think

Answer: buoyancy forceexplanation: in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.