Test-Physics Questions & Answers

Test-Physics Questions & Answers If a vector has components Ax 0, and Ay 0, then the angle that this vector makes with the positive x-axis must be in the range -90 to 180 -cannot be determined without additional info -0 to 90 -270 to 360 -180 to 270 - CORRECT ANSWER- 180 to 270 If the eastward component of vector A is equal to the westward component of vector B and their northward components are equal. Which one of the following statements about these two vectors is correct? -Vector A is parallel to vector B. -The magnitude of vector A is twice the magnitude of vector B. -The magnitude of vector A is equal to the magnitude of vector B. -Vector A is perpendicular to vector B. -Vectors A and B point in opposite directions. - CORRECT ANSWER- The magnitude of vector A is equal to the magnitude of vector B. t/f If all the components of a vector are equal to 1, then that vector is a unit vector. - CORRECT ANSWER- false t/f If the magnitude of vector A is less than the magnitude of vector B, then the x-component of A is less than the x-component of B. - CORRECT ANSWER- false