The pressure inside a sealed container of nitrous oxide (N, O) at the dentist's office is 8.5 kPa. If the original temperature of 295 K is increased to 305 K, what will be the new pressure?

8.8kPa

Explanation:

Given parameters:

Initial pressure  = 8.5kPa

Initial temperature  = 295k

New temperature  = 305k

Unknown:

New pressure  = ?

Solution:

To solve this problem, we have to apply the combined gas law when the volume is constant;

in this instant, when the volume is constant, the pressure of a given mass of gas varies directly with the absolute temperature.

            =  

P and T are pressure and temperature

1 and 2 are initial and final states

  Insert the parameters and solve;

          =  

      P₂  = 8.8kPa

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation: