Vector a has a magnitude of 4.0m and points 30 south of east vector b has a magnitude of 2.0m and points 30 north of west the resultant vector a + b is given by

For which pair of objects would adding the same a

The discovery of the electron as a subatomic particle was a result of

In a particular chemical reaction, the energy of the reactants is 30 kj and the energy of the products is 5 kj. 
 the maximum energy of the system is 40 kj. sketch a potential energy diagram for this reaction. make sure to label the energy of the reactants, the energy of the products, the activation energy, and the enthalpy change for the reaction.