Physics, 28.01.2020 11:31 abelxoconda
"a jack-in-the-box is a toy in which a figure in an open box is pushed down, compressing a spring. the lid of the box is then closed. when the box is opened, the figure is pushed up by the spring. the spring in the toy is compressed 0.070 meter by using a downward force of 12.0 newtons.
calculate the spring constant of the spring. [show all work, including the equation and substitution with units."
Answers: 2
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In science and physics what is the standard unit of measure for speed?
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Physics, 22.06.2019 11:50
Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?
Answers: 2
Physics, 22.06.2019 14:30
The man of mass m1 and the woman of mass m2 are standing on opposite ends of the platform of mass m0 which moves with negligible friction and is initially at rest with s = 0. the man and woman begin to approach each other. derive an expression for the displacement s of the platform when the two meet in terms of the displacement x1 of the man relative to the platform.
Answers: 1
Physics, 22.06.2019 14:40
A5 foot by 5 foot box culvert is buried 6 feet beneath the surface of the ground. a crosssection of this very long culvert (into and out of the page) is illustrated below. assume that the soil in which the culvert is buried has the following properties: jt = 120 pcf, w = 12%, ko = 0.50, ka = 0.33, and kp = 3.00. calculate the total horizontal force per unit length of culvert (fh) felt on one of the vertical faces of the culvert.
Answers: 1
"a jack-in-the-box is a toy in which a figure in an open box is pushed down, compressing a spring. t...
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