In what year did the organization of petroleum exporting countries (opec) refuse to sell oil to the u. s. due to political differences? a) 1973 b) 1977 c) 1980 d) 1984

Work = force × a. work b. energy c. distance d. momentum

How does the electric potential energy between two charged particles change if one particle is reduced by a factor of 3? a. increased by a factor of 3 b. it is decreased by a factor of 9 c. it is reduced by a factor of 3 d. it is increased by a factor of 9

Both speed and velocity measure how fast something is moving. however, since speed is not a it does not require a(n question 6 options: a) quantity , unit b) magnitude, unit c) scalar, direction d) vector, direction