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two 1 mhz radio antennas emitting in-phase are separated by600 m along a north-south line a radio reciever placed 2
a block and tackle consisting of two fixed pulleys and one moveable pulley is used to lift a stone weighing 1200 n the
a 200 kg body is pulled up an inclined plane 15 m long and 5 m high the force required to pull the body up the plane at
drain cleaner dissolves a hair clog in a bathroom drain is this a chemical or physical
a motor rotating a gringing wheel which is 5m in radius isrotating at 60 revminwhat is the initial speed of the
in what ways do the properties of water influence the strength of a electrostatic interactions b hydrogen bonding and c
a sphere of radius 10m and a mass of 5kg is rotated from restto achieve a rotational speed of 20 radsec in 10 secswhat
the space shuttle releases a satellite into a circular orbit 765 above the earth how fast must the shuttle be moving
calculate the amount of 10 acetic acid you will need to add to 1000 ml of your milk in order to bring the final acidity
a skier starts from rest at the top of a frictionless inclineof height 200m at the bottom pf the incline the skier
a 00539g sample of iron sulfate was dissolved in dilute hcl and treated with 10 bacl2 solution the baso4 precipitate
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