A frog is thrown horizontally from a 20 meter tall hill with an initial speed of 4 m/s. How far forward will it travel in the first second of its flight? You can ignore air
resistance.
4 m
5 m
80 m
2 m
8 m
40 m

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.

Hydrogen atoms are excited by a laser to the =4n=4 state and then allowed to emit. what is the maximum number of distinct emission spectral lines (lines of different wavelengths) that can be observed from this system? 8 6 2 7 4 5 1 3 calculate the wavelength of the 4⟶14⟶1 transition. =λ=