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during a tennis serve a racket is given an angularacceleration of magnitude 160 rads2 at thetop of the serve the racket
a stretched string of length l is plucked at a position l5 by producing an initial displacement h and then releasing
the pulmonary artery which connects the heart to the lungshas an inner radius of 28 mm and is82 cm long if the pressure
140 moles of gas are in a 800 liter tank at 210 celcius calculate the difference in pressure between methane and an
the electric potential difference between the ground and a cloud in a particular thunderstorm is 93 x 109 v what is the
1 a wire has a cross-sectional area of 55times10-6 m2 in a time of 37 s 58 c of charge flows through it what is the
why is the h-o-h bond angle in a water molecule h2o smaller than the h-c-h bond angles in methane
in the ground state of hydrogen theuncertainty in the position of the electron is roughly 010nm if the speed of the
describe the reaction as a balanced chemical equation that occurs when methane which is a natural gas ch4 is burned in
a charge q is uniformly distributed around a thin plastic ring with radius r lying in a yz plane with the ring center
a hydraulic lift has pistons with diameters 785 cm and 365 cmrespectively if a force of 825 n is exerted at the input
the charge on the phosphate ion is 3- po43- the formula for phosphate of chromium is crpo4 what is the charge on the
a 45 kg woman stands up in a 60 kg canoe of length 5 metersshe walks from a point 1 meter from one end to a point 1
an 844 kg man is standing at the rear of a 425 kg iceboatthat is moving at 416 ms across the ice that may be considered
a process takes place at constant pressure the volume changes and the temperature increases by 870oc the heat capacity
a block of wood weighs 500 n whenweighed in air a sinker is attached to the block and the weightof the wood-sinker
a sample of poylethylene is found to have an average molecular weight of 32x106 estimate the root-mean-square
a walkway suspended across a hotellobby is supported at numerous points along its edges by a verticalcable above each
a circuit contains six 219 o lamps with 60-w bulbs and a 94 o heater connected in parallel the voltage across the
evaluate reversibility of a process where an ideal monoatomic gas is first slowly compressed 10-fold by a gradually
an x-ray photon with a wavelength of 0110 nm scatters from a free electron at restthe scattered photon moves at an
a 430 kg box is sliding across the horizontal floor of an elevator the coefficient of kinetic friction between the box
consider n moles of an ideal monatomic gas placed in a vertical cylinder the top of the cylinder is closed by a piston
1500 cm3 of ideal gas at stp is cooled to -20o c and put into a 1000 cm3 container what is the final gauge pressurea 11
traveling at a speed of 195 ms the driver of an automobile suddenly locks the wheels by slamming on the brakes the