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a skier slides down along a frictionless snow slope starting from rest at point a with elevation ha 84 m ignore air
a piece of chocolate cake contains about 400 calories a nutritional calorie is equal to 1000 calories thermochemical
a u shaped tube with a constant radius is filled with water and oil as shown the water is a height h1 037 m above the
the human body must maintain its core temperature inside a rather narrow range around 37degc metabolic processes
dye a has molar absorptivities of 55000 m-1 cm-1 at 465 nm and 23000 m-1 cm-1 at 575 nm dye b has molar absorptivities
a skier of mass 700 kg is pulled up a slope by a motor-driven cablea how much work is required to pull the skier a
how high must a waterfall be for the water to change temperature by 01k during its fall assuming no
a thermodynamic system undergoes a process in which its internal energy increases by 490 j at the same time 250j of
some fish have swim bladders to control buoyancy assume a fish compresses his swim bladder from an initial state t1 p1
two solid uniform flywheels each of mass 650 kg and radius 147 m rotate independently around a common axis the first
to prevent damage to floors and to increase friction a crutch will often have a rubber tip attached to its endif the
according to the guinness book of world records the longest home run ever measured was hit by roy dizzy carlyle in
the enthalpy of neutralization for the reaction of a strong acid with a strong base is -56 kjmol of water produced how
waly whacko claims to have invented a heat engine that will revolutionize industry it runs between a hot source at
a ball and a thin plate are made from different materials and have the same initial temperature the ball does not fit
calculate the ph at each point listed for the titration of 5000ml of 0115 m alanine with 0250 m naoh where vb is the
a 40 n crate starting at rest slides down a rough 6m long ramp inclined at 30 degrees with the horizontal the force of
a sample of commercial concentrated perchloric acid is 110 m hclo4 and has a density of 160 gml calculate the mass
a 022 m radius pulley if free to rotate about a horizontal axis a 205 kg mass and an 80 kg mass are attached by a
an optical pure alkyl chloride has a rotation of alphad of 123 while the coresponding alcohol has alphad 108 in a
a small immersion heater is rated at 400w estimate how long it will take to heat a cup of soup assume this is 474 ml of
1 mention 3 general characteristics and two examples each for the follow phylaarthropoda protozoa plathyhelminths2
monochromatic light strikes a diffraction grating at normal incidence before illuminating a screen 300 m away if the
wrongly called for a foul an angry basketball player throws the ball straight down to the floorif the ball bounces
each croquet ball in a set has a mass of 50kg the green ball travels at 105ms and strikes a stationary red ball if the