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1 a 1000-w motor powers a hoist used to lift cars at a service stationa how much time would it take to raise a2450-kg
you drop a rock from rest from the top of a tall building it takes 0117 s for the rock to pass by a 210-m high window
what did scientists originally think the medium for a light wave was what is actual medium for a light
you throw a rock from the upper edge of a 800-m vertical dam with a speed of 250 ms at 650nbspabove the horizon1
1 a single gas molecule of inertia m is trapped in a box and travels back and forth with constant speed v between
1 you point a tennis-ball serving machine straight up and put a piece of plastic wrap across the top of the barrel
a 10 kg object sits on the surface of the earthnbsp 1 calculate the magnitude of the gravitational force the earth
a 150-kg block of ice at 000 degc falls into lake superior which is a freshwater lake the lake water is at 100 degc and
a sealed container holds 0020 moles of ideal nitrogen n2 gas at a pressure of 15 atmospheres and a temperature of 290 k
a conducting spherical shell of inner radius a 500 cm and outer radius b 600 cm has a net charge q1 -700 muc a second
1 the mass density of an object is 138 gcc and its volume is determined to be 332 cc what is the mass of the object2
two soccer players mary and jane begin running from nearly the same point at the same time mary runs in an easterly
1 give an example from real life where is applied pascals principle and one for bernoullis principle2 why a person can
1 a video game console requires 600 v to operate correctly a transformer allows the device to be powered from 120 v
a small metal bead labeled a has a charge of 25nc it is touched to metal bead b initially neutral so that the two beads
a ball is thrown vertically downwards from a height of 20 m with an initial velocitynbspv02 it collides with the ground
what is the use of the fan blades in a commercial jet plane what is its
a water balloon is launched at a speed of 21 ms and an angle of 36 degrees above the horizontal the water balloon hits
in this problem you will work through making sense of the thermodynamic quantities of entropy s internal energy uint
you are pushing a textbook with a purely horizontal force against the wall of your classroom you push sufficiently hard
what is the terminal speed for a65middotkg skier going down a38deg snow-covered slope on wooden skis with muk0053
suppose a hypothetical object has just four quantum states with the following energies-08 ev third excited state-13 ev
a ball is dropped from 136 ft above the ground assume that air-drag is negligible in this casea at what height is half
a car traveling at speed v takes distance d to stop after the breaks are applied what is the stopping distance if the
the electromagnetic spectrum please respond to the followingwatch the video titled what are gamma rays 1 min 39 sec