Physics, 26.12.2019 06:31, deepspy599otchpd
Aflat, horizontal uniform plank is supported underneath by a triangular wedge which itself rests on flat, level ground. an object that has the same weight as the plank is placed on the left end of the plank. where the wedge must be placed under the plank in order for the system to be in equilibrium?
a. 1/6 the length of the plank from the left end
b. 1/5 the length of the plank from the left end
c. 1/4 the length of the plank from the left end
d. 1/3 the length of the plank from the left end
Answers: 3
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 11:50, azertyqwerty123
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
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