When Santa arrived in Texas on Christmas eve, it was cold and snowy and the roofs were very icy. Santa landed his sleigh and stepped out onto the icy roof. As Santa’s foot pushed backward, an equal and opposite force pushed the sleigh forward on the icy surface. Luckily, Rudolph and Dancer kept the sleigh from sliding off the roof! Is this the Law of Inertia (1st), Law of Acceleration (2nd) or Law of Action/Reaction (3rd)? Explain your reasoning.

The first element on the periodic table of elements is carbon. a. true b. false

How many protons, electrons, and neutrons are in each of the following isotopes? a. zirconium-90 b. palladium-108 c. bromine-81 d. antimony-123

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?