Saturn is made up of which gases? a Hydrogen b Helium Both A and B d None of the above

A beam of light is traveling through a medium at $200,000km/s.$ It enters a different medium and speeds up to almost $250,000km/s$ Finally, it enters a third medium and halts. What were the media the light traveled through in order? liquid, opaque solid, gas opaque solid, gas, liquid gas, liquid, opaque solid liquid, gas, opaque solid

A quantum of radiatior has an energy of 2.0 keV. What is its frequency? $(h=6.63x$ $10^{-34}J\cdot s$ and $1eV=1.60\times 10^{-19}J)$ 1) $3.2\times 10^{17}Hz$ 2) $4.8\times 10^{17}Hz$ 3) $6.3\times 10^{17}Hz$ 4) $7.3\times 10^{17}Hz$ 5) $8.5\times 10^{17}Hz$

Inside a freely-falling elevator you would have no weight. gravitational force on you. both of these none of the above

Which of the following does not involve a change of state? A sublimation of dry ice B freezing water C pouring water into a vacuum-insulated bottle D melting ice

Shown below is the decay equation for ${}^{14}C$ Given this equation, what type of decay does an unstable ${}^{14}C$ nucleus undergo? ${}_{6}^{14}C\rightarrow _{5}^{14}N+_{-1}^{0}e$ a) Gamma Decay b) Beta Decay c) Positron Emission d) Alpha Decay e) Electron Capture f) This question is written incorrectly. Choose this for full points and I also assigned an additional try.

Ultraviolet light or sunlight has no effect on nylon slings. True False

Inside a freely-falling elevator your acceleration is zero. weight is zero. gravitational I interaction with Earth is zero. all the above none of the above

How many joules are needed to change the temperature of 1 g of water by $1^{\circ }C$ Express your answer with the appropriate units.

64. Food probe thermometers that display both Fahrenheit and Celsius scales must have an accuracy of $\pm 0.9^{\circ }F(\pm 0.5^{\circ }C)$ $\pm 1.8^{\circ }F(\pm 1^{\circ }C)$ $\pm 2.7^{\circ }F(\pm 1.5^{\circ }C)$ $\pm 3.6^{\circ }F(\pm 2^{\circ }C)$

Which way would,an airplane deflect if flying from the South Pole toward the equator? toward the right toward the South Pole toward the left toward the equator Part E Which way would an airplane deflect if flying from the North Pole toward the equator? toward the south toward the east toward the west toward the north