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a 575 n woman climbs a staircase that rises at 54 degrees above the horizontal and is 410 m long her speed is a
based on their available oxidation states rank the following metals on their ability to catalyze this and other
a 755 n man stands in the middle of a frozen pond of radius 80 m he is unable to get to the other side because of a
a thick-walled copper pipe inner radius a and outer radius b is centered on the z-axis and carries a current density of
the enthalpy of fusion of water is 60 kjmol and the heat capacity of ice is 365 jmol c how many kj of heat is given off
a rifle with a weight of 25 n fires a 30 g bullet with a speed of 240 msa find the recoil speed of the rifle msb if a
an elderly person with a body mass of 65 kg is walking while using a cane in one hand if the upward force that the cane
explain why the optically pure ketone r 3-methyl-2-hexanone gives a racemic mixture when exposed briefly to aqueous
high-speed stroboscopic photographs show that the head of a 240 g golf club is traveling at 44 ms just before it
a car with a mass of 2000 kg is traveling at 20 ms how much kenetic energy in joules does the car have how much heat
compare the 2p electrons in nitrogen to the 2p electrons in oxygen both at ground state which electrons feel the
suppose a flat roof has a surface area of 118000times102 m2 presume the air inside the building and under the roof is
an extreme skier starting from rest coasts down a mountain that makes an angle of 342 deg with the horizontal the
a fraunhofer diffraction pattern is produced from a light sourced of wavelength 580 nm the light goes through a single
a 12 v battery is connected by a switch not shown in series to an inductor inductance 400 mh and a resistor resistance
under the influence of its drive force a snowmobile is moving at a constant velocity along a horizontal patch of snow
light of wavelength 540 nm is incidenct on a slit of width 0150 and a diffraction pattern is produced on a screen that
a 30 kg load is being raised by a force of 180 n using the ideal pulley arrangement shown in figure 6-7 what is the
a husband and wife take turns pulling their child in a wagon along a horizontal sidewalk each exerts a constant force
an ambulance with a siren emitting a whine at 1600 hz overtakes and passes a cyclist pedaling a bike at 244 ms after
the magnetic field at the center of a 0900-cm-diameter loop is 270mt a what is the current in the loop b a long
according to the shop manual when drilling a 118mm--diameter hole in wood plastic or aluminum a drill should have a
a light source simultaneously emits light of two wavelengths 480 nm and 560 nm respectively the source is used in a
you mass 55 kg are riding your frictionless skateboard mass 50 kg in a straight line at a speed of 47ms when a friend
a ballistograph consists of a platform supported on air jets that allow sensitive recoil speed measurements of the