2. A vector A has a magnitude of 30 m at an angle of 225° with respect to the positive x-axis. If we add a vector B, it is found that the resultant is along the positive x-axis and has a magnitude of 13 m. What are the components of vector B and its direction?

Ahowler monkey is the loudest land animal and, under some circumstances, can be heard up to a distance of 4.6 km. assume the acoustic output of a howler to be uniform in all directions and that the threshold of hearing is 1.0 × 10-12 w/m2. what is the acoustic power emitted by the howler

Polly is pushing a box across the floor with a force of 30 n. the force of gravity is –8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?