AS & A Level Physics - 9702 Paper 1 2014 Winter Zone 1

A 0.10 kg mass is taken to Mars and then weighed on a spring balance and on a lever balance. The acceleration due to gravity on Mars is 38% of its value on Earth. What are the readings on the two balances on Mars? (Assume that on Earth $g = 10 \text{ms}^{-2}$.)
[Table_1]

What is equivalent to the unit of electric field strength?

The diagram shows the reading on an analogue ammeter.

Which digital ammeter reading is the same as the reading on the analogue ammeter?

A steel wire is stretched in an experiment to determine the Young modulus for steel.
The uncertainties in the measurements are given below.
[Table_1]
What is the percentage uncertainty in the Young modulus?

The acceleration of free fall on the Moon is one-sixth of that on Earth.

On Earth it takes time $t$ for a stone to fall from rest a distance of 2 m.

What is the time taken for a stone to fall from rest a distance of 2 m on the Moon?

Which graph represents the motion of a car that is travelling along a straight road with a speed that increases uniformly with time?

What is the principle of conservation of momentum?

Water is pumped through a hose-pipe at a rate of 90 kg per minute. It emerges from the hose-pipe horizontally with a speed of 20 ms^-1.

Which force is required from a person holding the hose-pipe to prevent it moving backwards?

Two railway trucks of masses $m$ and $3m$ move towards each other in opposite directions with speeds $2v$ and $v$ respectively. These trucks collide and stick together.

What is the speed of the trucks after the collision?

A glider is descending at constant speed at an angle of 15° to the horizontal. The diagram shows the directions of the lift $L$, air resistance $R$ and weight $W$ acting on the glider.

Which vector triangle could represent the forces acting on the glider? 

A ball is falling at terminal speed in still air. The forces acting on the ball are upthrust, viscous drag and weight.

What is the order of increasing magnitude of these three forces?

A uniform ladder rests against a vertical wall where there is negligible friction. The bottom of the ladder rests on rough ground where there is friction. The top of the ladder is at a height $h$ above the ground and the foot of the ladder is at a distance $2a$ from the wall.

The diagram shows the forces that act on the ladder.

Which equation is formed by taking moments? 

A mass attached to the lower end of a spring bounces up and down. At which points in the path of the mass do the gravitational potential energy of the mass (GPE), the elastic potential energy in the spring (EPE) and the kinetic energy of the mass (KE) have their highest values?

A mass $m$ is situated in a uniform gravitational field.

When the mass moves through a displacement $x$, from $P$ to $Q$, it loses an amount of potential energy $E$.

Which row correctly specifies the magnitude and the direction of the acceleration due to gravity in this field? 

A small electric motor is mounted on a bench, as shown. The motor is connected to a 6.0V supply and the current in the motor is 0.50A. The motor is 50% efficient.

What is the time taken to lift a mass of 200g up through a height of 90 cm?

A projectile is launched at 45\degree to the horizontal with initial kinetic energy $E$.

Assuming air resistance to be negligible, what will be the kinetic energy of the projectile when it reaches its highest point?

What is the correct name for a material containing long-chain molecules that are tangled and coiled?

Which statement about molecules in a gas is correct?

The diagram shows the atoms of a substance with the atoms at the corners of a cube. The average separation of the atoms at a particular temperature is 15 nm.

When the temperature changes so that the average separation becomes 17 nm, by which factor will the density of the substance change? 

The stress-strain graph for a glass rod, up to the point at which it breaks, is shown below.

Which statement about the glass rod is correct? 

A rubber band is stretched by hanging weights on it and the force-extension graph is plotted from the results.

What is the best estimate of the strain energy stored in the rubber band when it is extended 30 cm?

Which statement about electromagnetic radiation is correct?

Which statement describes a situation when polarisation could not occur?

A stationary sound wave is produced in a tube.

Which statement describes the wave speed?

Two identical loudspeakers are connected in series to an a.c. supply, as shown.

Which graph best shows the variation of the intensity of the sound with distance along the line XY? 

A diffraction grating experiment is set up using yellow light of wavelength 600 nm. The grating has a slit separation of 2.00 μm.

What is the angular separation ($\theta_2 - \theta_1$) between the first and second order maxima of the yellow light?

The diagram shows two parallel horizontal metal plates. There is a potential difference $V$ between the plates.

A small charged liquid drop, midway between the plates, is held in equilibrium by the combination of its weight and the electric force acting on it.

The acceleration of free fall is $g$ and the electric field strength is $E$.

What is the polarity of the charge on the drop, and the ratio of charge to mass of the drop?

The diagram shows two metal plates connected to a constant high voltage.

 
Which graph shows the variation of the electric field strength $E$ midway between the two plates as the distance $d$ between the two plates is increased? 

B_1, B_2 and B_3 are three identical lamps. They are connected to a battery with zero internal resistance, as shown.

Initially the switch is closed. The switch is then opened and lamp B_3 goes out. What happens to the brightness of lamps B_1 and B_2 when the switch is opened?

A battery is marked 9.0 V. What does this mean?

A pencil is used to draw a line of length 30 cm and width 1.2 mm. The resistivity of the material in the pencil is $2.0 \times 10^{-5} \, \Omega \, \text{m}$ and the resistance of the line is 40 k$\Omega$.
What is the thickness of the line?

A conductor consists of three wires connected in series. The wires are all made of the same metal but have different cross-sectional areas. There is a current $I$ in the conductor.



Point $Y$ on the conductor is at zero potential.

Which graph best shows the variation of potential $V$ with distance along the conductor?

The graph shows how the electric current $I$ through a conducting liquid varies with the potential difference $V$ across it.

At which point on the graph does the liquid have the smallest resistance?

The combined resistance $R_T$ of two resistors of resistances $R_1$ and $R_2$ connected in parallel is given by the formula shown.
\[ \frac{1}{R_T} = \frac{1}{R_1} + \frac{1}{R_2} \]
Which statement is used in the derivation of this formula?

In the potentiometer circuit shown, the reading on the ammeter is zero.
The light-dependent resistor (LDR) is then covered up and the ammeter gives a non-zero reading.
Which change could return the ammeter reading to zero?

Six resistors, each of resistance $R$, are connected as shown.
The combined resistance is 66 kΩ.
What is the value of $R$?

Which statement about \( \alpha \)-particles is correct?

The isotope $^{222}_{86}\text{Rn}$ decays in a sequence of emissions to form the isotope $^{206}_{82}\text{Pb}$. At each stage of the decay sequence, it emits either an $\alpha$-particle or a $\beta$-particle.
What is the number of stages in the decay sequence?

What is the approximate mass of a nucleus of uranium?