# CIE A Level Physics 1990 P1

Topics: Kinetic energy, Energy, Magnetic field Pages: 8 (1999 words) Published: May 28, 2013
1990

1.A constant mass undergoes uniform acceleration when the resultant force acting on it

Ais proportional to the displacement from a fixed point. Bis proportional to the velocity.
Cis zero.
Dis constant but not zero.
E increases uniformly with respect to time.

2.Two blocks, X and Y, of masses m and 2m respectively, are accelerated along a smooth horizontal surface by a force F applied to the block X, as shown in the diagram.

[pic]

What is the magnitude of the force exerted by block Y on block X during this acceleration?

A 0B F/3C F/2D 2F/3E F

3.The e.m.f. Eb of a battery is given by Eb = P/I where P is the power dissipated when a current I flows. The e.m.f. Ec induced in a coil by a changing magnetic flux is equal to the rate of change of flux, Ec = dΦ/dt. Which of the following is a unit for magnetic flux?

A m s-1 AB m s-2 A-1C kg m2 s-2 AD kg m s2 A-1

E kg m2 s-2 A-1
4.A puck on a frictionless surface collides with a stationary puck. The pucks move as shown in the diagram.

[pic]
[pic]

If the mass of the puck moving before the collision is 0.30 kg, what is the mass of the second puck

A 0.20 kgB 0.28 kgC 0.40 kgD 0.49 kgE 1.0 kg

5.A small ball of weight W is suspended by a light thread. When a strong wind blows horizontally exerting a constant force F on the ball, the thread makes an angle θ to the vertical as shown in the diagram.

[pic]

Which of the following equations correctly relates θ, F and W?

Acos θ = F/W
Bcos θ = W/F
Csin θ = F/W
Dtan θ = F/W
Etan θ = W/F

6.A linear accelerator sends a charged particle along the axis of a set of coaxial hollow metal cylinders as shown in the diagram. [pic]

The particle travels at constant speed inside each cylinder. The particle crosses the gaps between the cylinders at equal time intervals, and at each gap its kinetic energy increases by a fixed amount. Which of the graphs best represents the way in which v, the velocity of the particle varies with d, the distance along its track?

[pic]

[pic]

7.The diagram shows two bodies X and Y connected by a light cord passing over a light, free-running pulley. X starts from rest and moves on a smooth plane inclined at 30 o to the horizontal. [pic]

What will be the total kinetic energy of the system when X has traveled 2.0 m along the plane? (g = 9.8 m s-2).

A 20 JB 59 JC 64 JD 132 JE 137 J

8.When a satellite in on the surface of a planet, it experiences a gravitational force W. What is the gravitational force when the satellite is at a height R/50, where R is the radius of the planet?

A 1.02 WB 1.00 WC 0.98 WD 0.96 WE 0.00 W

9.When the aircraft Concorde is moving in a horizontal plane at a constant speed of 650 m/s, its turning circle has a radius of 80 km. What is the ratio of the centripetal force to the weight of the aircraft?

A 8.3 x 10-4B 0.54C 1.9D 52E 540

10.A body performing simple harmonic motion has a displacement x given by the equation x = 30 sin 50t, where t is the time in seconds. What is the frequency of oscillation?

A 0.020 HzB 0.13C 8.0 HzD 30 HzE 50 Hz

11.In a fairground shooting game a gun fires at a moving target. The gun fires by itself at random times. The player has to point the gun in a fixed direction, and the target moves from side to side with simple harmonic motion.

[pic]

At which region should the player take a fixed aim to score the greatest number of hits?

A3
Beither 1 or 5
Ceither 2 or 4
Dany of 1, 3, or 5
Eany of 1, 2, 3, 4, or 5

12.The diagram shows two oscillations.

[pic]

What is the phase difference between the two oscillations?

A π/4 radB π/2 radC 3/4 π radD π radE 3/2 π rad

13. Progressive waves of frequency 300 Hz are...

Please join StudyMode to read the full document