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a carnot engine operates between asource temerature of 700 degrees celsius and a sink temperatiure of 20 degrees
a gun has a spring constant of 10ncm when the gun is inclined upward by 30 degree to the horizontal a 10 g ball is shot
a sample of 225 g of silicon tetrachoride is reacted with an excess more than necessary amout of mg how many moles of
one generator uses a magnetic field of 015 t and has a coil area per turn of 0045 m2 a second generator has a coil area
a shopper pushes a cart 23 m south down one aisle and then turns 900deg west and moves 23 m he then makes another
a steel wire has the following properties cross-sectional area 0040 cm2 youngs modulus 20 x 1011 pa shear modulus
a freshman is currently enjoying the arts studio program she is pursuing at a well-known university in her free time
a small ball rolls off the roof edge of a building with a horizontal speed of 23 ms the ball hits the ground a distance
a projectile is shot straight up from the earths surface at a speed of 120times104 kmhr how high does it
methyl-m-nitrobenzoate is an excellent identification derivative of methyl benzoate what are the properties of
a thick spherical shell of charge q and uniform volume charge density is bounded by radii r1 and r2 where r2 gt r1
a garden hose of inner radius 05 cm carries water at 20 ms the nozzle at the end has radius 020 cm how fast does the
two window washers bob and joe are on a 300 m long 405 n scaffold supported by two cables attached to its ends bob
a draw molecular orbital diagrams for the valence molecular orbitals of c2 and o2 you should indicate the atomic
you are the science officer on a visit to a distant solar system prior to landing on a planet you measure its diameter
a u-shaped tube is partly filled with water and partly filled with a liquid that does not mix with water both sides of
suppose that the silver-silver chloride electrode in figure 152 is replaced by a saturated calomel electrode calculate
a hole is drilled straight through the center of the planet foosbane the planet is remarkable in that its density is
in one of my demonstrations i let someone break concrete blocks that are placed on top of me while i am sandwiched
a list the following substances in order of increasing normal boiling points explaining your reasoning no nh3 ne and
a duck flying horizontally due north at 142 ms passes over atlanta where the magnetic field of the earth is
a 20 kg object moving with a velocity of 80 ms collides with a 80 kg object that is initially at rest after the
a 2 kg mass is held at rest on top of a frictionless and horizontal table a light string loops over a pulley which is
polonium metal crystallizes in a lattice which contains only one po atom per cubic unit cell the radius of polonium
codeine c18h21no3 is a narcotic pain reliever that forms a salt with hcl what is the ph of 0069 m codeine hydrochloride