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consider a universe where the matter density is 0 and it has a significant cosmological constant lambda assume the
in an l-r-c series circuit l 0398h r 310ohms and c 591times108f when the ac source operates at the resonance
rewrite the following unbalanced equations changing them into balanced net ionic equations assume that all reactions
a heat engine takes in 400j of energy from a hot reservoir and performs 35j of work in each cycle finda the efficiency
1 for each of the following write down the equation that is used to calculate the amount of matter present in the
calculate the molarity of the ions present in these salt solutions assume each salt to be 100 dissociated please show
when a small metal pellet is dropped onto a block of ice the immediate region around the area of contact melts and
a series ac circuit contains a 330ohm resistor a 130mh inductor a 250microf capacitor and an ac power source of voltage
a solution of 536 g of a molecular compound dissolved in 768 g benzene c6h6 and has a boiling point of 8146oc what is
the temperature of the surface of the sun is 6000k and its radius is 696000km how much energy is the sun radiating into
a car starts from rest and then accelerates uniformly to a linear speed of 14 ms in 37 s if the tires have a radius
what is the a molality b freezing point c boiling point of a solution containing 1000 g of ethylene glycol c6h6o2 in
to test the working of a refrigerator you put a container having two liters of water 2kg at 50c in its freezer after
a thin flat uniform disk has mass m and radius r a circular hole of radius r4 centered at a point r2 from the disks
a chemistry lab experiment requires 252 g of silver nitrate how many grams of a 155 by mass solution of silver nitrate
a parallel-plate capacitor has a capacitance of 10mf and is charged with a 20-v power supply the power supply is then
a 800 nf capacitor is charged up to 140 v then disconnected from the power supply and connected in series through a
consider a tank connected to a supply line through a valve the tank with a volume of 2475 ft3 initially contains
an inductor with an inductance of 210 h and a resistance of 790 omega is connected to the terminals of a battery with
classify each of the following bonds as nonpolar covalent polar covalent of ionic if a bond is polar covalent identify
a lifeguard sits on his watchtower at the edge of the pool at a height h20m above the surface of the water a watch
a power supply maintains a potential difference of 791 v across a 169 kq resistor what is the current in the resistor
sketch a heating curve for a substance x whose melting point is 40oc and whose boiling point is 65oca describe what you
in which of the following substances would you expect to find hydrogen bonding explain your reasonsa c2h6b nh3c h2od
in a thin film experiment a wedge of air is used between two glass plates if the wavelength of the incident light in