For nitrogen the molar volume at s.t.p is 0.0024m³ and the relative molecular mass is 28. Calculate the number of molecules in one cm³ of nitrogen at s.t.p
A 20 kg weight-on. A table is attached by a string to another 20 kg weight that is hanging over thhe edge of the table. Assuming that the coefciea oittien is 0.2, what is the acceleration and what is the tension in the string?
When calibrated on the Celsius scale , the lower and upper fixed length of a thread are respectively 2.0cm and 10.0 cm from the bulb. What is the temperature of the room where the length of the thread is 8.0cm