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the length of a simple pendulum is 077 m and the mass of the particle the bob at the end of the cable is 025 kg the
how much ammonia in a lab at 22 degree celcius would be necessary to make 10 g of urea if the yield is know to be less
assume that a 900 w light bulb radiates all its energy as a single wavelength of visible lighta estimate the electric
a wooden raft has a mass of 90 kg when empty it floats in water density 1000 kgm3 with 67 of its volume submerged what
100 ml of 0150 m acid ha are mixed with 100 ml of 00800 m naoh calculate the titration constant kt of the resulting
a 059 kg object connected to a light spring with a force constant of 212 nm oscillates on a frictionless horizontal
the value of delta e for a system that performs 213 kj of work on its surroundings and loses 79 kj of heat is
the potential energy of a 5x10-6c charge decrease from 017j when it is moved from point a to point b what is the change
an 18 mm wide diffraction grating has rulings of 710 lines per mm light is incident normally on the grating
a sample of aluminum metal absorbs 986j of heatupon which the temperature of the sample increases from 232 c to 395 c
assume that an esterification reaction is done using 010 moles of a carboxylic acid and 1 moles of an alchohol what is
potassium hydroxide is used to precipitate each of the cations from their respective solution determine the minimum
a radar transmitter contains an lc circuit oscillating at 210 1010 hza for a one-turn loop having an inductance of 360
a uniform plank 100 m long and weighing 200 n is supported horizontally by a brick at one end and an egg at the other a
a certain star is 980 light-years awayhow long would it take a spacecraft traveling 095c to reach that star from earth
an object is placed 100 cm in front of a lens of focal length 20 cm a second lens is placed 35 cm beyond the first this
a 158m--long fm antenna is oriented parallel to the electric field of an em wavehow large must the electric field be to
a large flask is evacuated and weighed filled with argon gas and then reweighed when reweighed the flask is found to
what is the wavelength in nanometers of the light emitted when the electron in a hydrogen atom drops from the energy
1 the molar mass of bano3 is2 consider the following reaction 3 no2 h2o-2hno3 no what volume of water is needed to
red light from three separate sources passes through a diffraction grating with 600times105 linesm the wavelengths of
a 165 kg bowling trophy is held at arms length a distance of 068 m from the shoulder jointwhat is the magnitude of the
a lucite planoconvex lens has one flat surface and one with r 163cm it is used to view an object located 610cm away
rays of the sun are seen to make a 356 angle to the vertical beneath the waterat what angle above the horizon is the