Wednesday
December 11, 2013

# Posts by star

Total # Posts: 132

chemistry
a radioactive material is undergoin nuclear decay. After 40 minutes, 25% of the sample remains. What is the half life of the sample? Pls say the formula how to calculate it a)10 mins b) 20 mins c) 40 mins d)80 mins e) 160 mins

chemistry
6/27 = p1/-73 ths are the values which m getting frm question bt stil the last ans is like 438 which is obviously wrong

chemistry
m not getting the right answer am getting a different ans

chemistry
an ideal gas in a closed inflexible container has a pressure of 6 atm and a temperature of 27 degree celsius . What will be the new pressure of the gas of temperature is decreased to -73 degree celsius? a) 2 atm b) 3 atm c) 4atm d) 8atm e) 9atm plz teach me the method also

physics
what u mean it wil be the same as wat ?

physics
a 20 ohm and 60 ohm resistors are connected in series to a DC generator. The voltage across the 20 resistor is 80 volts. The current through the 60 ohm resistor? A) 1.0A B) 5.0 A C) is about 1.3 A D)4.0 A E) cannot be calculated

physics
an object is placed 10 cm from a concave spherical mirror whose radius of curvature is 12 cm. What is the distance of image a) 5cm b) 10 cm c)15cm d)20cm e)24cm

physics
i dno thats y m posting it here

physics
an electron moves with constant speed at right angles to a uniform magnetic flux, if the flux density were doubled, the force on the electron would be A) unaffected B) reduced to one month C) halved D) doubled E) quadrupled

physics
if a stone at the end of a string is whirled in a circle, the inward pull on the stone A) is known as the centrifugal force B) is inversely proportional to the speed of the object C) is inversely proportional to the square of the speed D) is proportional to the speed E) is pro...

Pages: <<Prev | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | Next>>

Search
Members