I really need help on this. *my teachers is gruesome- 1. A car starts out at 0 meters per second. It ends up at 100 meters per second . The time is 20 seconds. Calculate acceleration
2.A roadrunner accelerates for 20 meters per second to 60 meters per second in 5 seconds.
3.A lizard running from the roadrunner gets squashed by the car. It was running at 30 meters per second when it got squashed. It’s final velocity is now 0 meters per second because it’s road kill...The time was 10 seconds.

The particle in a two-dimensional well is a useful model for the motion of electrons around the indole ring (3), the conjugated cycle found in the side chain of tryptophan. we may regard indole as a rectangle with sides of length 280 pm and 450 pm, with 10 electrons in the conjugated p system. as in case study 9.1, we assume that in the ground state of the molecule each quantized level is occupied by two electrons. (a) calculate the energy of an electron in the highest occupied level. (b) calculate the frequency of radiation that can induce a transition between the highest occupied and lowest unoccupied levels. 9.27 electrons around the porphine ring (4), the conjugated macrocycle that forms the structural basis of the heme group and the chlorophylls. we may treat the group as a circular ring of radius 440 pm, with 20 electrons in the conjugated system moving along the perimeter of the ring. as in exercise 9.26, assume that in the ground state of the molecule quantized each level is occupied by two electrons. (a) calculate the energy and angular momentum of an electron in the highest occupied level. (b) calculate the frequency of radiation that can induce a transition between the highest occupied and lowest unoccupied levels.

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87

Which of the following will cause an induced current in a coil of wire? the constant field of the earth passing through the coil a magnet resting near the coil a magnet being moved into or out of the coil a wire carrying a constant current near the coil