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five forces act on an object 1 600 n at 90deg 2 400 n at 0deg 3 800 n at 270deg 4 400 n at 180deg and 5 500 n at 60deg
measurements indicate that there is an electric field surrounding the earth its magnitude is about 140ncat the earths
an object in equilibrium has three forces exerted on it a 33-n force act at 90deg from the x-axis and a 44-n force acts
racing on a flat track a car going 32 ms rounds a curve 56 m in radius1 what is the carrsquos centripetal acceleration2
decide the magnitude of the electric field at a point midway among a -80c and a 86c charge 80 cm apart suppose no other
a runner moving at a speed of 88 ms rounds a bend by a radius of 25 m1 what agent exerts the force on the runner2 what
a student drops a penny from the top of a tower and decides that she will establish a coordinate system in which the
consider two identical insulated metal spheres a and b sphere a initially has a charge of -60 units and sphere b
a roller coaster of mass 1400 kg is launched from ground level by a spring if the spring is compressed by 28 m what
when a glass rod is rubbed by silk it the rod becomes positively charged this happens because1 electrons are created on
what is the best microscope to get a detailed view of the parts inside of a preserved plant
how might your description of the flame color for licl change if your wire containing the salt slurry was
describe with the aid of a diagram a possible transition state for the single step reaction between ch3br and oh-1 to
a mover places a 65 kg crate on a ramp by a slope if 25 above the horizontal with what horizontal force should the
what will be the final temperature of a mixture made from 250 g of water at 150 degrees c 450 g of water at 500
seawater containing 350 wt salt passes through a series of 10 evaporators roughly equal quantities of water are
a charged oil drop that has a mass of 490times1012 kg and carries 10 elementary charges is cantered 50 mm below the
a sound wave in air at 20c has a frequency of 151hz and a displacement amplitude of 520times10 3mm the pressure
robert is driving his convertible at the 65-mph speed limit the cars soft elastic ragtop roof is in the up or closed
a man pushing a mop across a floor causes it to undergo two displacements the first has a magnitude of 158 cm and makes
1 a stationary boat in the ocean is experiencing waves from a storm the waves move at59kmh and have a wavelength of
when 500 g of sodium hydroxide naoh was dissolved in 15000 g of water a value of 1050oc was obtained for
using the symmetry of the arrangement decide the direction of the electric field at the center of the square at the
a 48 kg ice skater is gliding along the ice heading due north at 50 ms the ice has a small coefficient of static
a large storage tank with an open top is full to a height h0 the tank is punctured at a height h above the bottom of