Physics, 26.10.2019 00:43 jennemylesp19oy5
The head of a grass string trimmer has 100 g of cord wound in a light, cylindrical spool with inside diameter 3.00 cm and outside diameter 18.0 cm as shown in the figure below. the cord has a linear density of 10.0 g/m. a single strand of the cord extends 16.0 cm from the outer edge of the spool. (a) when switched on, the trimmer speeds up from 0 to 2 250 rev/min in 0.230 s. what average power is delivered to the head by the trimmer motor while it is accelerating? w (b) when the trimmer is cutting grass, it spins at 1 915 rev/min and the grass exerts an average tangential force of 8.80 n on the outer end of the cord, which is still at a radial distance of 16.0 cm from the outer edge of the spool. what is the power delivered to the head under load?
Answers: 3
Physics, 21.06.2019 19:30
Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies. molten iron has a density of 7.0g/cm cubed. in its solid state, iron has a density of 8.0g/cm cubed.
Answers: 3
Physics, 22.06.2019 22:30
The record distance in the sport of throwing cowpats is 81.1 m. this record toss was set by steve urner of the united states in 1981. assuming the initial launch angle was 45° and neglecting air resistance, answer the following. (a) determine the initial speed of the projectile. m/s
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Physics, 23.06.2019 13:00
Which term defines a powers shared by state and federal governments? a. concurrent. b. expressed. c. implied. d. reserved
Answers: 2
The head of a grass string trimmer has 100 g of cord wound in a light, cylindrical spool with inside...
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