The atomic number of an atom is defined as which of the following?
a) number of protons
b) mass in grams
c) mass in amu
d) number of electrons

Fill in the blank. the number of each type of element in the compound (other than 1) is represented by a small number to the right of the element symbol.

How is the acceleration of an object in uniform circular motion constant? a - in magnitude only b - in direction only c - in both magnitude and direction d - in magnitude, direction & orientation

Vi. on another planet, a spring with constant 4.7 n/m is set up and allowed to expand verticaly freely. 8.4kg mass is placed on the spring and the spring extends 5.28m. calculate the exected extension on earth.