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a child places a picnic basket on the outer rim of a merry-go-round that has a radius of 42 m and revolves once every
what mass of magnesium in reaction with an excess of hydrochloric acid is needed to produce 128 ml of hydrogen h2 gas
radio waves are electromagnetic waves that travel at a speed of 300 108 ms the speed of light an am radio station has
the world burns approximately 90x102 kg of fossil fuel per year use the combustion of octane as the representative
a rectangular loop is made up of 50 turns of wire and has dimensions of 23 x 64 cm it is located in a uniform 1 t
calculate the heat capacity of a calorimeter if the combustion of 4660 g of benzoic acid led to an increase in
seat belts and air bags save lives by reducing the forces exerted on the driver and passengers in an automobile
a fuel gas containing 86 methane 8 ethane and 6 propane by volume flows to a furnace at a rate of 1450 m3 h at 15
make a schematic diagram of a cell for each of the following cell reactions indicate on the diagram the anode the
a 10 g ball of clay traveling east at 15ms collides and sticks together with a 30g ball of clay traveling north at
two narrow slits are illuminated by a laser with a wavelength of 593 nm the interference pattern on a screen located x
a 300 g bird flying along at 55 ms sees a 10g insect heading straight toward it with a speed of 25 ms as measured by an
a strong man is compressing a lightweight spring between two weights one weight has a mass of 23 kg the other a mass of
two lenses are mounted in a tube such that the distance between them can be varied this device can be used as either a
two radio-frequency point sources s1 and s2 separated by distance d 16 m are radiating in phase with 04 m a detector
succinic acid an intermediate in the metabolism of food molecules has molecular mass 1811 amu when 1926 g of succinic
a reflecting telescope has a main mirror with fm 680 mm if an eyepiece with a magnification of 40 is used what is the
a person is nearsighted and can clearly focus on objects that are no farther than 26 m away from her eyes she borrows a
a certain gyroscope consists of uniform disk with a 50 cm radius mounted at the center of an axle that is 11 cm long
in 1980 over san francisco bay a large yo-yo was released from a crane suppose the yo-yo was 135 kg and it consisted of
what is the velocity of a hydrogen molecule after absorbing a photon 584 nm what is the translational energy of the
two blocks with masses 500g and 510 g are connected to a rope and hung over a 50g cylinder with a radius of 4 cma what
exactly 100 ml of 012 m nitrous acid hno2 are titrated with a 012 m naoh solution calculate the ph for the followinga
you have a 193 omega resistor a 0400 h inductor a 492 uf capacitor and a variable-frequency ac source with an amplitude
a diffraction grating produces a first order bright fringe that is 0226 m away from the central bright fringe on a flat