When students work in a chemistry lab, the location of which item would be the most important for each student to know?
a. broom and dust pan, in case the student needs to sweep up broken glass
b. baking soda, in case the student needs to neutralize an acid spill
c. ice maker, in case the student needs to cool off hot glassware
d. safety shower, in case a chemical is spilled on the student’s body

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?

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Your target variable is δf, the magnitude of the difference in frequency between the waves emitted from the sonar device and the waves received by the device after reflecting off the whale. write an expression for δf in terms of the relevant frequencies using the subscript notation introduced above.