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two forces act at an angle of 120°.the bigger force is of 40N and the resultant is perpendicular to the smaller one find the smallerforce?
the speed of sound in helium is 965 m/s. if the density of helium is 0.179 kg/m^3, then what is the bulk modulus of helium
A 1,262-kilogram roller coaster car starts at point A almost at rest. It runs downhill into a valley. At its bottom, the valey can be described by a circle with radius 12 m. Find the height required at point A, such that the normal force acting on ..
suppose 5.00 g of hydrogen is separated into electrons and protons. suppose also the protons are placed at the earths
The wavelength of an electromagnetic wave is measured to be 2.50 x 10-7 m. What is the frequency of the wave?
question a person in a kayak starts paddling and it accelerates from 0 to 0.8 mileshour in a distance of 0.8 km. if the
A neutron star is the remnant left after certain supernovae (explosions of giant stars). What is a typical neutron star density in g/cm3
Find the magnetic field at the center of the loop and express it as a function of time.
Find the drift velocity of conduction electrons in a gold wire of diameter 1.03 mm when a current of 0.221 A flows in it. The density of conduction electrons in gold is 5.90 X 10^28 m-3
A roller coaster car of mass 310 kg (including passengers) travels around a horizontal curve of radius 35 m. Its speed is 17 m/s. What is the magnitude and direction of the total force exerted on the car by the track? magnintude N direction ° above t..
What is the distance, measured along the screen, between this bright fringe and bright fringe corresponding to m = 3.
A gaseous mixture containing 0.170 mole fraction of carbon tetrachloride and 0.830 mol fraction of dry air is initially at 73 Celsius and 1163mm Hg. At what temperature would 42% of the ccl4 condense
Consider a 1.00g piece of Na. How many conduction electrons are there?
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