Physics, 17.10.2019 04:00, mistiehaas
first, the student dragged a gear into place in the mechanism, wound, and released the spring. she observed
that as the gear rotates the car moves.
2. then, the student measured the diameter, in centimeters, of each gear using the ruler. her results are below:
physical science | calculating speed | lab report
3. next, the student used the meter stick to measure and mark a finish line 1 meter from the starting position of
the cart.
analysis (8 points)
1. what tool(s) were used to measure in this activity? what units were used? (2 points)
2. what units for speed were used in this activity? (2 points)3. was a tool used to measure speed? if yes, what tool was used? if no, how was speed determined? (2 points)
4. can you think of a situation in which an instrument measures and indicates speed? (2 points)
conclusion (8 points)
write a brief summary for each of the following questions.
5. what was the purpose of this experiment? (2 points)
6. how did you determine speed? include your measurements and calculations. (2 points)
7. look at the results of the data in the graph. which gear caused the car to go fastest? which version of the car
was slowest? (2 points)
8. does the answer to the previous question support or refute your hypothesis? (2 points)
Answers: 2
Physics, 22.06.2019 03:30, 1074885
The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared
Answers: 1
Physics, 22.06.2019 16:00, chamyaparker
What is the freezing point of radiator fluid that is 50% antifreeze by mass? kf for water is 1.86 ∘c/m.
Answers: 3
first, the student dragged a gear into place in the mechanism, wound, and released the spring. she o...
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