8(mandatory) (1 point) a class assignment is to design the best parachute. objects were dropped from a constant height using different parachutes. based on the data, what can you conclude is the best design to reduce impact with the ground? parachute design object weight radius of parachute impact speed 100 g 10 in. 4.7 m/s 100 g 15 in. 3.8 m/s 200 g 10 in. 7.7 m/s 200 g 15 in. 7.0 m/s question 8 options: a heavier object should be used to reduce impact. a larger parachute should be used to reduce impact. a smaller parachute should be used to reduce impact. a smaller parachute should be used to reduce impact. question 9 (mandatory) (1 point) braddy connected the lose wire to the battery and created an electromagnet. he picked up 45 thumb tacks with his electromagnet, though his goal was to pick up 50 thumb tacks. what could braddy do to increase the strength of his electromagnet and pick up more thumbtacks? braddy connected the lose wire to the battery and created an electromagnet. question 9 options: use fewer coils of wire. use a screw instead of a nail. use two batteries instead of one. replace the nail with a piece of steel. question 10 (mandatory) (1 point) what molecular level property allows copper to be an ideal material to be used in electrical wiring? question 10 options: the solubility of copper and copper compounds. the freedom of electrons to move between atoms in the metallic bonding. attractive forces within the copper alloyed wire. a high degree of crystallinity in the bulk structure. question 11 (mandatory) (1 point) low-frequency red light is used in dark rooms because it does not expose the film. this is because the red light has a low question 11 options: amplitude. energy. intensity. wavelength. question 12 (mandatory) (1 point) before computers, hospital nurses would record important information about patients on paper. more and more nurses now record patient information on computers. what is an advantage to using computers? question 12 options: the information is more accurate on the computer. doctors can now access patient information from home at any time. it is cheaper to record information on the computer than on paper. fewer people have access to the patient's information on the computer. question 13 (mandatory) (1 point) there are two seemingly inconsistent models of light. one model suggest light is pure energy wave and the other suggests that light is made up of particles or photons. as light passes through the ozone layer, ultraviolet light passing through is changed into less harmful light. which model of light is better suited to explain this? question 13 options: the particle model, because light is refracted. the particle model, because photons are absorbed by the ozone. the wave model, because the light interferes with the ozone layer. the wave model, because photons strike the ozone layer and are absorbed. question 14 (mandatory) (1 point) which is an example of the use of satellite imagery for humans? question 14 options: studying changes in earth’s core. monitoring the population of salmons. studying the life cycles of insect species. predicting and monitoring hurricanes and tornadoes.