Physics, 16.11.2019 02:31 shelly1969
Awater wheel with radius rw = 1.2 m and mass mw = 1.9 x 103 kg is used to power a grain mill next to a river. treat the water wheel as a hollow cylinder. the rushing water of the river rotates the wheel with a constant frequency fr = 2.6 hz. a. calculate the angular velocity Οw of the water wheel in radians/sec. b. calculate the kinetic energy kw, in j, of the water wheel as it rotates. c. assume that every second, 20% of the kinetic energy of the water wheel is transmitted to the grain mill. calculate the power pw in w of the grain mill based on the energy it receives from the water wheel.
Answers: 2
Physics, 21.06.2019 23:30
1.in one challenge on the titan games, competitors have to lift 200 pounds up a long ramp. angel is able to move the weight in 42 seconds. anthony gets it done in only 38 seconds. which statement is true? angel has more power than anthony. angel does more work than anthony. anthony does more work than angel. anthony has more power than angel. 2.a mountain climber exerts 41,000 j of work to climb a cliff. how much power does the climber need if she wants to finish in only 500 seconds? power = work / time 20,500,000 watts 82 watts 0.0122 watts 41,500 watts 3.your family is moving to a new apartment. while lifting a box 83 joules of work is done to put the box on a truck, you exert an upward force of 75 n for 3 s. how much power is required to do this? (hint: you only need two of the 3 numbers given! ) power = work / time 249 watts 25 watts 2075 watts 27.7 watts
Answers: 1
Physics, 22.06.2019 12:00
This is for my 8th grade science class, i really donβt understand. can someone me? , lol.
Answers: 1
Physics, 22.06.2019 16:40
Panel bc in fig. p2.76 is semi-circular, with the 3 meter radius and horizontal straight edge through point b. compute (a) the hydrostatic force of the water on the panel, (b) its center of pressure, and (c) the moment of this force about point b. assume atmospheric pressure on the dry side of the panel
Answers: 3
Physics, 22.06.2019 18:30
Asmall grinding wheel has a moment of inertia of 4.0Γ10β5 kgβ
m2 . what net torque must be applied to the wheel for its angular acceleration to be 150 rad/s2 ?
Answers: 3
Awater wheel with radius rw = 1.2 m and mass mw = 1.9 x 103 kg is used to power a grain mill next to...
History, 31.01.2020 15:52
Biology, 31.01.2020 15:52
Mathematics, 31.01.2020 15:52
History, 31.01.2020 15:52
Computers and Technology, 31.01.2020 15:52
History, 31.01.2020 15:52
English, 31.01.2020 15:52
Mathematics, 31.01.2020 15:52