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alpha centauri is 43 light years away if we could make a rocket that went 45 the speed of lighta how long would we
a metal ball of mass 022 kg with initial temperature of 95ordmc is dropped into a container of 050 kg of water at
a sinusoidal electromagnetic wave having a magnetic field of amplitude 125mu rm t and a wavelength of 432rm nm is
a long solenoid of length 70 x 10-2 meters and cross-sectional area of 40 x 10-5 meters2 contains 6200 turns per metera
what is the ph at the point during a titration when 21 ml of 0200 m hcl has been added to 26 ml of 00500 m nh3 solution
a solenoid has a diameter d 15 cm length l 300 cm and 440 turnsa find the inductance of the solenoidinductance 143
show that the ratio of the surface area to the volume of the sphere is smaller than that for a cube of equal
1 a 02088g sample of an unknown monprotic acid requires 2210 ml of 01000 moll koh to reach the end point what is the
water at 207degc is sprayed onto 0193 kg of molten gold at 1063degc its melting point the water boils away forming
calculate the ph for each of the following cases in the titration of 500 ml of 0140 m hclo aq with 0140 koh aqa after
you send a beam of light from a material with index of refraction 121 into an unkown material in order to help identify
how many grams of magnesium fluoride mgf2 must be added to 673 g of water to prepare a 481 mm solution of magnesium
consider 500 mol of liquid watera what volume is occupied by this amount of water the molar mass of water is 180
if the barometer at your house reads 7672 mm of mercury what is the atmospheric pressure in
an electron enters a region of space containing a uniform 00000217-t magnetic field its speed is 189 ms and it enters
describe and explain the possible effect on your results of the following experimental errors or variations in each
a 120 resistor is made from a coil of copper wire whose total mass is 200what is the diameter of the wirehow long is
a person weighing 77kg jogs at 15ms calculate the momentum and wavelength of this person can you observe the wavelength
soles of boots that are designed to protect workers from electric shock are rated to pass a maximum rms current of 15ma
a heat engine absorbs qh 3385 j of heat from a reservoir at th 650ordmc and rejects qc 2660 j to a reservoir at th
what is the wavelengths associated with an electron moving at 15x108 cms and a 60g tennis ball moving 1500 cms which
four gram-moles of an ideal monatomic gas initially at temperature 300 k is compressed adiabatically from a volume of
two and one-half kg of ice at temperature t 0ordmc is melted into water at the same temperature by placing it in
write balanced reaction equations for the reacions involved a when aspirin dissolves in aqueous nahco3 and b when
one gram-mole of an ideal gas initially occupies v1 50 l at p1 117 kpa and then expands to v2 100 l at constant