Sand falls from an overhead bin and accumulates in a conical pile with a radius that is always twotwo times its height. suppose the height of the pile increases at a rate of 33 cm divided by scm/s when the pile is 1010 cm high. at what rate is the sand leaving the bin at that instant?

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?

Abeam of electrons with of wavelength of 7.5 x 10-6 m is incident on a pair of narrow rectangular slits separated by 0.75 mm. the resulting interference pattern is projected onto a screen 10.0 m from the slits. what is the separation of the interference maxima in the resulting interference pattern?

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving