IB DP Physics Topic 3 Paper 1 2019

• A.

• B.

• C.

• D.

• A. 1/8

• B. 1/4

• C. 4

• D. 8

A mass m of water is at a temperature of 290 K. The specific heat capacity of water is c. Ice, at its melting point, is added to the water to reduce the water temperature to the freezing point. The specific latent heat of fusion for ice is L. What is the minimum mass of ice that is required?

• A. $\frac{17mc}{L}$

• B. $\frac{290mc}{L}$
  

• C. $\frac{17mL}{c}$

• D. $\frac{290mL}{c}$

• A.

• B.

• C.

• D.

• A. $\frac{sgL}{nm\Delta T}$

• B. $\frac{sgL}{\Delta T}$

• C. $\frac{sgL}{n\Delta T}$

• D. $\frac{gL}{n\Delta T}$

Boiling water is heated in a 2 kW electric kettle. The initial mass of water is 0.4 kg. Assume the specific latent heat of vaporization of water is 2 MJ/kg.

What is the time taken for all the water to vaporize?

• A. 250 s

• B. 400 s

• C. 2500 s

• D. 4000 s

A gas storage tank of fixed volume V contains N molecules of an ideal gas at temperature T. The pressure at kelvin temperature T is 20 MPa. N/4 molecules are removed and the temperature changed to 2T. What is the new pressure of the gas?

• A. 10 MPa

• B. 15 MPa

• C. 30 MPa

• D. 40 MPa

• A.

• B.

• C.

• D.

• A. 0.50

• B. 0.70

• C. 1.4

• D. 2.0

• A. 0.25

• B. 0.5

• C. 2

• D. 4