Physics, 27.11.2019 21:31 grandpamyth
You are lowering two boxes, one on top of the other, down a ramp by pulling on a rope parallel to the surface of the ramp. both boxes move together at a constant speed of 15.0 cm/s. the coefficient of kinetic friction between the ramp and the lower box is 0.444, and the coefficient of static friction between the two boxes is 0.800.
(a) what force do you need to exert to accomplish this? (b) what are the magnitude and direc- tion of the friction force on the upper box?
Answers: 3
Another question on Physics
Physics, 22.06.2019 10:00
Suppose a wheel with a tire mounted on it is rotating at the constant rate of 2.15 times a second. a tack is stuck in the tire at a distance of 0.373 m from the rotation axis. noting that for every rotation the tack travels one circumference (a) find the tack's tangential speed. (b) what is the tacks radial acceleration?
Answers: 2
Physics, 22.06.2019 14:40
You throw a small rock straight up from the edge of a highway bridge that crosses a river. the rock passes you on its way down, 7.00 s after it was thrown. what is the speed of the rock just before it reaches the water 28.0 m below the point where the rock left your hand? ignore air resistance.
Answers: 2
Physics, 22.06.2019 14:40
Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?
Answers: 1
You know the right answer?
You are lowering two boxes, one on top of the other, down a ramp by pulling on a rope parallel to th...
Questions
Arts, 05.04.2021 20:20
History, 05.04.2021 20:20
Mathematics, 05.04.2021 20:20
Mathematics, 05.04.2021 20:20
Mathematics, 05.04.2021 20:20
