Analysis (8 points)
1. what tool(s) were used to measure in this activity? what units w...
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, 21.06.2019 19:00
Many machines- including inclined planes such as ramps- increase the strength of the force put into the machine but decrease the distance over which the force is applied.
Answers: 1
Physics, 22.06.2019 05:00
At time t=0, a particle is located at the point (3,6,9). it travels in a straight line to the point (5,2,7), has speed 8 at (3,6,9) and constant acceleration 2i−4j−2k. find an equation for the position vector of the particle.
Answers: 2
Physics, 22.06.2019 12:50
Air is contained in a variable-load piston-cylinder device equipped with a paddle wheel. initially, air is at 400 kpa and 17°c. the paddle wheel is now turned by an external electric motor until 75 kj/kg of work has been transferred to air. during this process, heat is transferred to maintain a constant air temperature while allowing the gas volume to triple. calculate the required amount of heat transfer in kj/kg.
Answers: 2
Physics, 22.06.2019 14:00
What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration
Answers: 1
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