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a roller coaster travels at 989ft at an angle of 429 above the horizontal how far does it move horizontally answer in
imagine a car tire that contains 51 moles of air when at a gauge pressure of 21times105nm2 the pressure above
a car travels at 80 kmh on a level road in the positive direction of an x axis each tire has a diameter of 66 cm
a student throws a baseball at a large gong 61 m away and hears the sound of the gong 15404 s later the speed of sound
a particle of mass m is conned in a one-dimensional innite well v x 0 if 0 le x le a v x infin if x lt 0
a uniformly charged straight filament 450 m in length has a total positive charge of 200 microc an uncharged cardboard
a bus makes a trip according to the position-time graph shown in the illustration what is the average acceleration in
a car starts from rest and travels for 100 s with a uniform acceleration of 30 ms2 the driver then applies the brakes
a horizontal force of 2 n does nothing to move a large book along a desk but a force of 18 n can keep the book
merry-go-round is at rest before a child pushes it so that it rotates with a constant angular acceleration for 340 s
a gray kangaroo can bound across a flat stretch of ground with each jump carrying it 90m from the takeoff point take
a woman at an airport is towing her 235-kg suitcase at constant speed by pulling on a strap at an angle above the
the string of a conical pendulum is 540 cm long and the mass of the bob is 027 kga find the angle between the string
a proton accelerates from rest in a uniform electric field of 644 nc at some later time its speed is 142 106 ms find
a point charge of 76 c is located 027 m from a second point charge of -49 c what is the absolute magnitude of the force
the pilot of an airplane notes that the compass indicates a heading due west the airplanes speed relative to the air is
one mole of a dilute gas initially has a pressure equal to 100 atm and a volume equal to 130 l and an internal energy
a science student is riding on a flatcar of a train traveling along a straight horizontal track at a constant speed of
heather in her corvette accelerates at the rate of 320i - 200j ms2 while jill in her jaguar accelerates at 100i 320j
three 17--long rods form an equilateral triangle two of the rods are charged to 16 the third to - 16 what is the
a wire has a resistance of 229 it is melted down and from the same volume of metal a new wire is made that is three
high-voltage power lines are a familiar sight throughout the country the aluminum wire used for some of these lines has
two wires are identical except that one is aluminum and one is nichrome the aluminum wire has a resistance of 021 what
a hollow conducting sphere with an outer radius of 0253m and an inner radius of 0190m has a uniform surface charge
a model of a red blood cell portrays the cell as a spherical capacitor a positively charged liquid sphere of surface