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coffee beans contain components that are soluble in water and others that are not instant coffee is produced by
a house has a floor area of 104 m2 and an outside wall that has an area of 32 m2 the earths magnetic field here has a
the upper surface of a cube of gelatin 50 cm on a side is displaced 064 cm by a tangential force if the shear modulus
an unknown material has a normal meltingfreezing point of -251deg c and the liquid phase has a specific heat capacity
a coin is located 279 cm to the left of a converging lens f 200 cm a second identical lens is placed to the right of
suppose that an ion source in a mass spectrometer produces doubly ionized gold ions au2 each with a mass of 327e-25 kg
an ac generator has 80 rectangular loops on its armature each loop is 11 cm long and 10 cm wide the armature rotates at
an electric power station is producing 12e3 w of power that is to be sent to a small town located 12 km away each of
two cylinders each contain 030 mol of a diatomic gas at 270 k and a pressure of 30 atm cylinder a expands isothermally
a wire is formed into a circle having a diameter of 103 cm and is placed in a uniform magnetic field of 284 mt the wire
410g of nitrogen gas at 200 c and an initial pressure of 270 atm undergo an isobaric expansion until the volume has
an electron and a positron have masses of 911 10-31 kg they collide and both vanish with only electromagnetic radiation
a conductor bar ab of length 06 m is moving on two conducting rails with a speed v 36 ms perpendicular to a uniform
first of the reactant is 2-methyl-2-butanol and the products are 2-methyl-1-butene and 2-methyl-2-butene i started out
a proton moving in a circular orbit of radius r 45 cm in a uniform magnetic field of 065 t perpendicular to the orbit
quantitative relationship between entropy and number of microstatesquantitative relationship between entropy and number
a long solenoid of length of 50 cm and an area 40 cm2 has 320 turns what is its self inductance if the current in the
a 12 inch diameter ball of pure cobalt metal at 225 deg celcius was placed in 10 gal of water at 15 deg celcius what is
a uniform magnetic field increases from 10 t to 12 t inb 05 swhat is the rate of change of the magnetic fieldwhat is
a long solenoid of 24 turns per cm carries a current of 16 awhat is the magnitude of the magnetic field in the solenoid
what is the change in the cell voltage on decreasing the ion concentrations in the anode compartment by a factor of 10
a circular coil of 15 turns and area 40 cm2 carries a current of 12 awhat is the magnetic moment of the coilwhat is the
calculate the standard emf of a cell that uses mgmg2 and cucu2 half-cell reactions at
a galvanic cell consists of a mg electrode in a 10 m mgno32 solution and a ag electrode in a 10 m agno3 solution
when copperii carbonate is placed in pure water what is the concentration of copper ions at