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How many moles of atoms are there in: (a) 28g of N_2; (b) 32 g of O_2; (c) 16 g of methane - CH_4; (d) 38 g of F_2?
Balance this question: __Fe(s) + __ O_2(g) -> __ Fe_2O_3(s)
an 84 kg fullback moving east with a speed of 5.8 ms is tackled by a 97 kg opponent running west at 3.6 ms and the
When viewed by an observer on the Earth, light from a distant galaxy is Doppler shifted to the red such that the ratio of the unshifted frequency to the observed frequency is 1.8
A squirrel in a typical long glide covers a horizontal distance of 16m while losing 8.0 m of elevation. During this glide, What is the total distance covered by the squirrel
For charging process, the voltage across the capacitor as a function of time is given by Vc = ε[1-exp(-t/τ)]. When the time is twice the time constant, find what percentage of the maximum voltage is on the capacitor
A tank contains mercury to a depth of 10.0cm with water to a depth 23.0cm floating on top. What is the gauge pressure at the bottom of th tank? (PHg=13.6g/cm^3)
The resistivity of the commercial copper is 1.72 x 10^-8 m. The diameter of a copper wire in the coil of a solenoid is 0.25 mm, find the heat generated in the coil each second
The protein dynein powers the flagella that propel some unicellular organism. biophysicists have found that dynein is intrinsically oscillatory and that it exerts peak forces of about 1.0 pN when it attaches to structures called microtubules. thee re..
q1. a small ball of mass 62 g is suspended from a string of length 37 cm and whirled in a circle lying in the
A 60 kg woman stands at the rim of a horizontal turntable having a moment of inertia of 500 kg-m2 and a radius of 2.0 m. In what direction and with what angular speed does the turntable rotate
The coefficent of static friction between the floor of a truck and a box resting on it is 0.33. the truck is traveling at 89.0 km/h. What is the least distance in which the truck can stop
A parallel plate capacitor has a plate area of 2.5 m2, spacing of 0.52 mm, and dielectric material between the plates with k=9.8. How much energy is stored by the capacitor
While moving in, a new homeowner is pushing a box across the floor at a constant velocity. The coefficient of kinetic friction between the box and the floor is 0.41. The pushing force is directed downward, at an angle theta below the horizontal.
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