Which of these is a vector quantity? A ) mass B ) energy C ) power D ) momentum

Question

Which of these is a vector quantity? A ) mass B ) energy C ) power D ) momentum If we push an object at constant velocity, how does the friction acting on the object compare to our pushing force A ) equal to the pushing force B ) greater than the pushing force C ) less than the pushing force D ) none of the above Which of these are true of gamma rays: I) Its frequency is lower than ultraviolet radiation. II) Gamma irradiation can be used to destroy harmful micro-organisms. III) They are electromagnetic waves. IV) They can bring about genetic mutations in humans. A ) I only B ) II only C ) II, III and IV D ) none of the above When alpha particles pick up electrons, they become _________ A ) Helium gas B ) Hydrogen gas C ) Lithium D ) none of the above The force responsible for chemical bonding is A ) nuclear B ) gravitational C ) electromagnetic D ) none of these If atoms unite by transfer of electrons, they form A ) an element B ) an ionic compound C ) a polar molecule D ) a covalent compound Substances that are diminished in a chemical reaction are called A ) products B ) reactants C ) catalysts D ) solvents Water has a high specific heat capacity. This property explains the fact that _____ A ) water has a high humidity, B ) water can boil quickly C ) water has a moderating effect on climate D ) water has a linear shape

Explanation / Answer

D C C B D B B B

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