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a car travels along a road at an average speed of 40kmh andreturns along the same road at an average speed of 60kmh
ammonia is kept at 15 degrees celsius in a 100 l flask with a pressure of 195 atm what is the pressure in the flask if
a carnot engine operates between 245degc and 135degc absorbing 630 104 jper cycle at the higher temperaturea what is
what volume in ml of 07m naoh solution would react with 83ml of 074m h3po4 solution balnced equation needed and answer
two people are pushing their stalled car up a hill with anincline of 420 degrees they are pushing parallel to the
draw the major e2 reaction product formed when trans-1-chloro-2-ethylcyclohexane reacts with hydroxide in
astronomers have recently measured the rotation of gas around what might be a supermassive black hole of about 2
a parallel-plate capacitor in air has circular plates of radius 25cm separated by 13 mm charge is flowing onto the
the compound butane consists of only c and h if 0446g of butane is burned in oxygen and produces 140g co2 and 0537g h2o
a car drives straight off the edge of a cliffthat is 54 m high the police at the scene of the accident observethat the
1during a titration the following data were collected a 10 ml portion of an unknown acid solution was titrated with 10
an electron with a speed of 750 x 108 cms enters an electric field of magnitude 100 x 103 nc traveling along the field
why is the 1 4-isomer 1 4-di-t-butyl-2 5-dimethoxbenzene the major product in the alkylation of dimethoxybenzene would
a sample of 143 g of helium and an unweighted quantity of o2 are mixed in a flask at room temperature the partial
what is the change in internal energy in j of a system that absorbs 0582 kj of heat from its surroundings and has 0267
two ropes are attatched to a heavy object the ropes aregiven to two strong women with the instructions for each to pull
two long straight wires that are suspended from a ceiling the mass per unit length of each wire is 0071 kgm each of the
a transformer is designed to change 120v into 10000v andthere are 164 turns in the primary coil how many turns are in
in a strong acid-strong base titration at room temperature the ph at the equivalence point is 7 the indicator
two point particles separated by 080 m have atotal charge of 200 muc a if the twoparticles repel each other with a
a spring is extended by 30mm when a force of 15 n is applied toit calculate the energy stored in the spring when
a 527-kg hot-air balloon takes off from rest at the surface of the earth the non-conservative wind and lift forces take
a sample of 420 ml of diethylether c2h5oc2h5 density 07134gmlis introduced into a 490-l vessel that already contains a
the corners of an equilateral triangle lie on a circle that has a radius of 25m what is the length of a side of the
suppose that the microwave radiation has a wavelength of 116cm how many photons are required to heat 265ml of coffee