Consider two vectors P⃗ =7.5i^ and Q⃗ =−1.5i^+6.0j^. If another vector R⃗ =P⃗ +Q⃗ , what is the magnitude of R⃗ ?

Which statement best describes how private industry decides where to spend the money on research and development

The place you get your hair cut has two nearly parallel mirrors 6.00 m apart. as you sit in the chair, your head is 2.00 m from the nearer mirror. looking toward this mirror, you first see your face and then, farther away, the back of your head. (the mirrors need to be slightly nonparallel for you to be able to see the back of your head, but you can treat them as parallel in this problem.) how far away does the back of your head appear to be?

Sunidhi made a study chart about changes in states of matter. which headings best complete the chart?