Ms. markas takes a thermos bottle filled with hot coffee to work each day. the thermos bottle keeps the coffe hot by

a. using a battery-powered heating element

b. collecting solar heat energy

c. recirculating hot air inside

d. slowing heat transfer from the inside to the outside of the container

Gymnast always perform on padded mats. how does the mats protect the gymnast

The ozone molecule o3 has a permanent dipole moment of 1.8×10−30 cm. although the molecule is very slightly bent-which is why it has a dipole moment-it can be modeled as a uniform rod of length 2.5×10−10 m with the dipole moment perpendicular to the axis of the rod. suppose an ozone molecule is in a 8000 n/c uniform electric field. in equilibrium, the dipole moment is aligned with the electric field. but if the molecule is rotated by a small angle and released, it will oscillate back and forth in simple harmonic motion. what is the frequency f of oscillation?

How many grams of mgbr2 are needed to produce 75g or metal?