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an astronaut leaves earth in a spaceship at a speed of 0280c relative to earth if the destination is a star system
a 0954 kg toy car is powered by four aa batteries 600 v total connected directly to a small dc motor the car has an
a racl2 sample isolated by m curie in 1906 contained 910 mg of 226 ra 226 ra has a half-life of 1622 yearsa what was
the displacement s of a particle moving under uniform acceleration a is some function of the elapsed time t and
suppose one side of a pine wood block with thickness of 10 inch is in contact with a steam block at a temperature of
a current of 389ma flows in a silver wire of diameter 333 mm find the electric field strength inside the wire the
using the value of 73 kcalmole for atp how many kcal are conserved as atp from one mole of glucose in each of the
you need to prepare a 0103mm diameter tungsten wire with a resistance of 205 kq how long must the wire be the
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