江苏省兴化中学期末考试中英国际班物理试题(A Level Physics )

江苏省兴化中学高二中英国际班2015—2016学年度第一学期期末考试试卷A Level Physics 2016/1/9

命题人：姜晓军考试时间：120分钟满分：120分

Name： Class：Score：

1 1) Momentum: p= .

2) The principle of conservation of momentum:

3) Newton’s first law of mo tion:

4) Newton’s third law of motion:

5)Tensile stress= / σ= /

Tensile strain= / ε= /

Young modulus= / E= /

6) P:

E:

Y1:

UTS:

B:

7) Power: p= , p=

8) Efficiency= ×100% /

9) Kinetic energy: E k= GPE: E p=

10) Work done: W=

11) Pressure: p= Pressure in fluids: p=

12)Equations of motion: v= ; s= ; s= ;

13) State Hooke’s law:

14) Density: ρ= (25marks + 12marks)

2. A metal wire has diameter 0.30 mm. A force of 6.9N changes its length from 1.025 m to 1.048m. Calculate the Young modulus of the metal. (6 marks)

3. A show that the Young modulus E of a material can be calculated using the equation x

A FL E Where F is the force applied, L is the original length of the wire, x is the extension of the wire ,and A is the cross-sectional area of the wire.

B Use the equation in (a) to determine E given the data: diameter of wire=0.90mm, original length of wire=3.500m,force applied=600N, extension=3.5cm. (7 marks)

4 . A glider of mass 0.200 kg is placed on a horizontal frictionless

air track. One end of the glider is attached to a compressible

spring of force constant 60 Nm -1. The glider is pushed against a

fixed support so that the spring compresses by 0.050m, see

Figure 1. The gilder is then released.

(i) Calculate the horizontal acceleration of the glider immediately after release.

(ii) After release, the spring exerts a force on the glider for a time of 0.094s. Calculate the average rate of work done by the spring on the glider. (7 marks)

5. a Figure 4 shows two springs A and B, connected in series and supporting a weight of 30N .The force constant

of each spring is shown on the figure.

(i) Determine the total extension of the two springs. (7 marks)

(ii) Determine the force constant of the combination of these springs.

6 . Figure

7 shows the force F against extension x for a metal wire.

A ) Determine the value of the force constant at the elastic limit of the wire.

B) Calculate the elastic potential energy for the wire when its extension is

0.25mm.

C) The Young modulus of the metal is 1.5×1011Pa and the length of the

wire is e Figure 7 to determine the cross-sectional area of the wire. (9 marks)

7 Figure shows an arrangement used by a student to investigate the energy stored in a

compressible spring .

a) The spring is compressed by a distance x and then released. It climbs a vertical

height h along the length of the rod. Show that h is directly proportional to x 2.

b) Figure 9 shows a graph of h against x 2 for the spring.

i) Use Figure 9 to predict the height h when x=3.0cm.

ii) The mass of the spring is 9.0g. Use figure 9 to determine the force

constant of the spring. (9 marks)

8 Dalmatian pelicans are massive birds. One such bird weighs 120N.

A State the acceleration of free fall of this bird

B Calculate the acceleration of the Earth towards this bird. (The mass of the

Earth is 5.97×

10

24kg) (6 marks)

Figure