Portable scissor lifts come in handy for gearheads who like to work on their cars. as seen below, my beloved infinity q45 is up for repairs. knowing the vehicle mass m = m=1840 kg and lift dimension a = a=60 cm, determine the cylinder force magnitude f a b fab in n in o n e one of the t h r e e three pistons a b ab when θ = θ= 35 o o. assume the mass of the lift and friction are negligible.

A500g object falls off a cliff and losers 100 j from its gravitational potential energy store. if the gravitational field strength g=9.8n/kg, how high is the cliff?

An electromagnetic wave with frequency 65.0 hz travels in aninsulating magnetic material that has dielectric constant 3.64 andrelative permeability 5.18 at this frequency. the electric fieldhas amplitude 7.20 \times 10^{ - 3} {\rm v}/{\rm m}. a. what is the speed of propagation of the wave? b.what is the wavelength of the wave? c.what is the amplitude of the magnetic field? d.what is the intensity of the wave?

In which item is energy stored in the form of gravitational potential energy? a. a slice of bread b. a compressed spring c. an apple on a tree d. a stretched bow string