A book is resting on a table. The mass of the book is 10 kg. The acceleration of gravity is 9.8 m/s2. Calculate the force the book exerts on the table.

An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Ariver current has a velocity of 5km/h relative to the shore, and a boat moves in the same direction as the current at 5 km/h relative to the river. how can the velocity of the boat relative to the shore be calculated?