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you are driving a car which is heading 25 ms towards a brick wall you sound a horn which emits at a frequency of 500 hz
calculate the wavelength of light emitted from a hydrogen atom when it undergoes a transition from the n6 level to
you sing into a well and find that the well resonates at frequencies of 220 hz and 260 hz with no resonances between
the distance from the earth to the nearest stars is measured in light-years convert the distance 78 light-years to si
a tunable dye laser emits pulses of light at 4830 nm each having a total energy of 48e-6 j calculate the number of
what is the ph of a buffer prepared by mixing 574 ml of 0050 m sodium bicarbonate and 102 ml of 010 m naoh carbonic
a sample of 22 mol o2 copm 29355 j k-1 mol-1 is originally confined in 24 dm3 at 270 k and then undergoes adiabatic
astronomers discover a binary star system that has a period of 960days the binary star system consists of two
a body oscillates with simple harmonic motion according to x 40 m cos20pi radst pi3 rad at t 450swhat is the
at elevated temperatures sodium chlorate decomposes to produce sodium chloride and oxygen gas a 08795 g sample of
two spherical objects have a combined mass of 160kg the gravitational attraction between them is 703times106n when
draw a lewis structure for each of the following compounds specify the hybrid orbitals that overlap to form each bond
a spring with spring constant 33 nm is attached to the ceiling and a 45 cm diameter 15 kg metal cylinder is attached to
an irregularly shaped body of mass 150 kg is mounted on an axle located 210 cm from the center of gravity of the body
the volume of a 156 by mass solution is 792 ml the density of the solution is 1480 gml what is the mass of the
a water storage container is leaking 25 ml of water per hour if the container is not fixed how many gallons of water
iron reacts with hcl solution to give h2 gas and fe2 ions suppose that 53 g of iron are to be dissolved in 17 m hcl
a block with mass m 70 kg is hung from a vertical spring when the mass hangs in equilibrium the spring stretches x 02
a 25 g glass tumbler contains 410 ml of water at 24degc if four 20 g ice cubes each at a temperature of -3degc are
a professional scientist measures out eaxctly 10000cm3 of a liquid and finds that its mass is exactly 80000g what is
under certain assumptions on f and phiox the sequence phinx is known to converge to a solutiona use picards method with
after an unfortunate accident at a local warehouse you have been contracted to determine the cause a jib crane
a dog is sitting in front of a plane mirror at a command it jumps at the mirror with a speed of 050 ms how fast does
the molecule n-octylglucoside is widely used in biochemical research as a nonionic detergent for solubilizing large
what are the three longest wavelengths for standing waves on a 237--long string that is fixed at both ends if the