*Rolling friction is just another form of friction. It doesn’t matter how it works, just the number is good enough For a car like the honda civic the drag due to air resistance is F=0.42v2 [the number has units Ns2/m2]. Using Desmos plot this air drag and add a line representing the road friction ᵳᵣ=r mg . When do the two lines intersect? What general statement can you make about the significance of road friction vs air resistance compared to the velocity of a car? NO LINKS PLEASE

Who was the first scientist to measure speed as distance over time?

Aphoton is absorbed by an electron that is in the n = 3 state of a hydrogen atom, causing the hydrogen atom to become ionized. very far away from the nucleus, the released electron has a velocity of 750,000 m/s. what was the wavelength of the absorbed photon?

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s.part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.