Physics, 10.03.2020 04:04 Karamatullah
A bicyclist of mass 88.0 kg puts all his weight on each downward-moving pedal as he pedals up a steep road. Take the diameter of the circle in which the pedals rotate to be 0.33 m, and determine the magnitude of the maximum torque he exerts in the process.
Answers: 2
Physics, 23.06.2019 01:30
Aplane's average speed between two cities is 600 km/h. if the trip takes 2.5 hours, how far does the plane fly?
Answers: 2
Physics, 23.06.2019 02:40
An air standard cycle with variable specific heats is executed in a closed system and is composed of the following four processes. 1-2 isentropic compression 100 kpa and 22°c to 600 kpa 2-3 v=constant heat addition to 1500 k 3-4 isentropic expansion to 100 kpa 4-1 p=constant heat rejection to initial state (a) show the cycle on p-v and t-s s (b) calculate the net work output per unit mass (409 kj/kg) (c) determine the thermal efficiency (47.9%)
Answers: 1
Physics, 23.06.2019 13:00
The maximum wavelength of light required to eject an electron from zinc is 270nm. calculate the threshold frequency of zinc.
Answers: 1
A bicyclist of mass 88.0 kg puts all his weight on each downward-moving pedal as he pedals up a stee...
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