Physics, 23.01.2020 03:31, singletaryshawp31cmx
A75.0-kg painter climbs a ladder that is 2.75 m long leaning against a vertical wall. the ladder makes a 30.0° angle with the wall. (a) how much work does is done by gravity on the painter? (b) does the answer to part (a) depend on whether the painter climbs at constant speed or accelerates up the ladder?
Answers: 1
Physics, 22.06.2019 05:50, ladyty2109
Astudent wears sunglasses to her read a book more easily which wave interaction occurs as light passes from the air into the plastic lenses? a polarization b. refraction c. diffraction d. interference
Answers: 1
Physics, 22.06.2019 09:30, tsvijay121
Astone is dropped from a cliff and falls 9.44 meters. what is the speed of the stone when it reaches the ground? a. 13.6 m/sec b. 1.39 m/sec c. 185 m/sec d. 9.80 m/sec
Answers: 3
Physics, 23.06.2019 07:00, cdjeter12oxoait
Roger pushes a box on a 30° incline. if he applies a force of 60 newtons parallel to the incline and displaces the box 10 meters along the incline, how much work will he do on the box? a. 5.2 × 102 joules b. 6.0 × 102 joules c. -5.2 × 102 joules d. -6.0 × 102 joules
Answers: 3
A75.0-kg painter climbs a ladder that is 2.75 m long leaning against a vertical wall. the ladder mak...
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