Physics, 03.12.2021 05:10 Amholloway13
PHYSICS ASSIGNMENT
A. If a cyclist of mass 70kg uses a bicycle of mass 7kg, how much work must the cyclist do against gravity in order to ascend to 2100m from sea level.
b. One particular descent goes from 2100m to 1600m. Assuming the work done against friction is 90% of the potential energy change of the cyclist and cycle, what Increase in speed in km/h can a rider attain by the end of the descent?
c. What is the average rate of energy conservation of the cyclist and cycle if the descent in part 'b' takes 1 minute at constant speed.
(Acceleration due to gravity, g = 10ms^-2)
Answers: 1
Another question on Physics
Physics, 21.06.2019 23:20
Initially, a particle is moving at 5.33 m/s at an angle of 37.9° above the horizontal. two seconds later, its velocity is 6.11 m/s at an angle of 54.2° below the horizontal. what was the particle's average acceleration during these 2.00 seconds in the x-direction (enter first) and the y-direction?
Answers: 1
Physics, 22.06.2019 06:30
From 0 to 5 seconds john pushed a box 5 meters. from 5 to 10 seconds, paul pushed the same box another 5 meters. who did more work? a. john b. paul c. john and paul did the same amount of work.
Answers: 1
Physics, 22.06.2019 16:50
Aresistor with an unknown resistance is connected in parallel to a 9 ω resistor. when both resistors are connected in parallel to an emf source of 21 v, the current through the unknown resistor is measured with an ammeter to be 4 a. what is the resistance of the unknown resistor? answer in units of ω.
Answers: 3
You know the right answer?
PHYSICS ASSIGNMENT
A. If a cyclist of mass 70kg uses a bicycle of mass 7kg, how much work must the...
Questions
Mathematics, 16.09.2019 17:40
Chemistry, 16.09.2019 17:40
English, 16.09.2019 17:40
Mathematics, 16.09.2019 17:40
Biology, 16.09.2019 17:40
Social Studies, 16.09.2019 17:40
Mathematics, 16.09.2019 17:40
Mathematics, 16.09.2019 17:40
Chemistry, 16.09.2019 17:40
History, 16.09.2019 17:40
