CSEC Physics Paper 2 May/June 2013 - Free CXC Past Paper with Answers

Define the term 'specific heat capacity' of an object.

Complete Table 3 below by inserting the correct symbol and SI Unit which relate to the quantity shown in Column 1.

TABLE 3

Write the formula for the General Gas Law, stating clearly what each letter represents.

A physicist converts 8 kg of water at $33 \text{ }^\circ\text{C}$ to steam at $100 \text{ }^\circ\text{C}$.

Assuming there is no heat lost, calculate the energy required (i) to heat the water to $100 \text{ }^\circ\text{C}$. (ii) to convert the water to steam at .

to heat the water to $100 \text{ }^\circ\text{C}$.

to convert the water to steam at $100 \text{ }^\circ\text{C}$.

What is the total energy, in mega joules, required to heat the 8 kg of water at $33 \text{ }^\circ\text{C}$ to steam at $100 \text{ }^\circ\text{C}$?

[Specific heat capacity of water $= 4 \text{ }200 \text{ J kg}^{-1}\text{K}^{-1}$] [Specific latent heat of vaporization of water ]

State Snell's Law.

In the space below, draw a labelled diagram using the converging lens to show clearly the following features:

• Principal axis
• Principal focus
• Focal length
• Focal plane

Describe the path into a prism and out of a prism when a ray of light is incident at $90^\circ$ to the hypotenuse of a right-angled glass prism as shown in Figure 1.

[Critical angle for glass = $42^\circ$]

Through what angle would the ray be turned after emerging?

[Critical angle for glass $= 42^\circ$]

State the law of conservation of linear momentum.

Describe a situation that demonstrates the law of conservation of linear momentum.

A truck, of mass 1250 kg, heading north crossed the median on the Jasper Highway, then slammed head-on at $25 \text{ ms}^{-1}$ into a 625 kg car heading south at $30 \text{ ms}^{-1}$. (i) What was the initial momentum of the truck? (ii) What was the initial momentum of the car? (iii) Assuming the car and truck move as one following the collision, what is the speed and direction of the wreck right after the collision?

Write your answer to Question 4 here.

What was the initial momentum of the truck?

What was the initial momentum of the car?

Assuming the car and truck move as one following the collision, what is the speed and direction of the wreck right after the collision?

Describe an experiment that can be used to determine the resistance of a metallic conductor.

Figure 2 shows a $12 \text{ V}$ battery of negligible internal resistance connected to an arrangement of resistors.

Given that resistors $R_1$ to $R_4$ each have a resistance of $3\Omega$, calculate Write your answer to Question 5 here.

the total resistance in the circuit

the current drawn from the $12 \text{ V}$ battery

the voltage across $R_2$.

Describe an experiment to compare the ranges of $\beta$ and $\gamma$ emissions in aluminium.

A liquid fluoride thorium reactor is said to be the new 'green' nuclear reactor.

(i) Rewrite the nuclear sequence to show how thorium-233 becomes uranium-233, a nuclear fuel, by calculating the numerical values of $x$, $y$, $u$ and $z$.

$\begin{array}{l} \text{Th} \ \text{90} \ \end{array}^{232} → \begin{array}{l} \text{Th} \ \text{y} \ \end{array}^{x}$

$\begin{array}{l} \text{Th} \ \text{y} \ \end{array}^{x} → \begin{array}{l} \text{Pa} \ \text{-1} \ \end{array}^{0} + \begin{array}{l} \text{Pa} \ \text{z} \ \end{array}^{u}$

$\begin{array}{l} \text{Pa} \ \text{z} \ \end{array}^{u} → \begin{array}{l} \text{U} \ \text{-1} \ \end{array}^{0} + \begin{array}{l} \text{U} \ \text{v} \ \end{array}^{233}$

(ii) The equation representing the fission of U-233 is

$\begin{array}{l} \text{U} \ \text{92} \ \end{array}^{233} + \begin{array}{l} \text{n} \ \text{0} \ \end{array}^{1} → \begin{array}{l} \text{Sb} \ \text{51} \ \end{array}^{133} + \begin{array}{l} \text{Nb} \ \text{41} \ \end{array}^{98} + \begin{array}{l} \text{n} \ \text{0} \ \end{array}^{1} + \text{energy}$.

Table 4 provides the data for these nuclides where $u = 1.66 \times 10^{-27}$ kg.

TABLE 4

Calculate the energy released in the fission of $\begin{array}{l} \text{U} \\ \text{92} \end{array}^{233}$.

$c = 3.0 \times 10^{8} \text{ m s}^{-1}$

Rewrite the nuclear sequence to show how thorium-232 becomes uranium-233, a nuclear fuel, by calculating the numerical values of $x$, $y$, $u$ and $z$.

$\begin{matrix} 232 \\ 90 \end{matrix} \text{Th} \to \begin{matrix} x \\ y \end{matrix} \text{Th}$

The equation representing the fission of U-233 is

$\begin{matrix} 233 \\ 92 \end{matrix} \text{U} + \begin{matrix} 1 \\ 0 \end{matrix} \text{n} \to \begin{matrix} 133 \\ 51 \end{matrix} \text{Sb} + \begin{matrix} 98 \\ 41 \end{matrix} \text{Nb} + 3 \begin{matrix} 1 \\ 0 \end{matrix} \text{n} + \text{energy}$.