Free Printable Physics Challenge 9

1.

Water is suitable to be used as a cooling agent because of its

a)

high density

b)

high heat capacity

c)

high latent heat

2.

Diagram below shows a metal sphere at temperature of 90°C immersed in a liquid at temperature of 40°C.

What is the temperature of the metal sphere when thermal equilibrium is achieved between the sphere and the liquid?

a)

More than 90°C

b)

Same as room temperature

c)

Less than 40°C

d)

Between 40°C and 90°C

3.

a)

A

b)

B

c)

C

d)

D

4.

a)

A

b)

B

c)

C

d)

D

5.

a)

A. 30 J

b)

B. 600 J

c)

C. 120 J

d)

D. 1200 J

6.

a)

A

b)

B

c)

C

d)

D

7.

a)

A

b)

B

c)

C

d)

D

8.

a)

A. Velocity

b)

B. Acceleration

c)

C. Momentum

d)

D. Kinetic energy

9.

a)

A

b)

B

c)

C

d)

D

10.

a)

A

b)

B

c)

C

d)

D

11.

a)

A

b)

B

c)

C

12.

^..

a)

A. 1.0 x10⁵N m^-2

b)

B. 1.4 x10⁵N m^-2

c)

B. 1.6 x10⁵N m^-2

d)

D. 2.6 x10⁵N m^-2

13.

a)

A. 1.27 x 10⁴m

b)

B. 1.27 x 10⁵m

c)

C. 1.27 x 10⁶m

d)

D. 1.30 x 10⁹m

e)

E. 1.33 x 10¹⁰m

14.

a)

A

b)

B

c)

C

d)

D

15.

a)

A. More than 90^o

b)

B. Same as room temperature

c)

C. Less than 40^o

d)

D. Between 40^oand 90^o

16.

a)

A. 125 kPa

b)

B. 190 kPa

c)

C. 192 kPa

d)

D. 208 kPa

e)

E. 296 kPa

17.

a)

A

b)

B

c)

C

d)

D

18.

a)

A. p

b)

B. q

c)

C. r

d)

D. s

19.

a)

A. 0.17

b)

B. 0.68

c)

C. 1.46

d)

D. 1.50

20.

a)

A. 6.50 cm

b)

B. 4.50 cm

c)

C. 4.00 cm

d)

D. 3.25 cm

e)

E. 2.25 cm

21.

a)

A. 2 m

b)

B. 3 m

c)

C. 4 m

d)

D. 8 m

22.

a)

A.

b)

B.

c)

C.

d)

D.

23.

Diagram below shows the cross section of water waves.

Which of the following statements is true about the water waves?

a)

A. T and U have the same phase

b)

B. Wave energy is transferred from position S to U

c)

C. The wavelength is the distance between S and U

d)

D. The particle at U oscillates in a direction parallel to the direction of the wave propagation

24.

a)

b)

c)

d)

25.

a)

b)

c)

d)

26.

a)

A. 3.9 km

b)

B. 7.8 km

c)

C. 15.6 km

d)

D. 31.2 km

e)

E. 156.6 km

27.

a)

A. P

b)

B. Q

c)

C. R

d)

D. S

28.

a)

A. The magnet is pulled out of the the solenoid

b)

B. The solenoid is moved towards the the magnet

c)

C. The magnet is moved into the solenoid

d)

D. The magnet and the solenoid are moved at the same velocity

29.

a)

A

b)

B

c)

C

d)

D

30.

a)

A

b)

B

c)

C

d)

D

31.

a)

A. 0.56 J

b)

B. 1.12 J

c)

C. 28.00 J

d)

D. 67.20 J

e)

E. 1680.00 J

32.

The function of a transformer in an electrical energy transmission system is to

a)

A. Increases the power

b)

B. Reduce the resistance

c)

C. Change the potential difference

d)

D. Speed up the time of transmission

33.

a)

A

b)

B

c)

C

d)

D

34.

A straight conductor is moved perpendicular to the magnetic field. Which of the following diagrams show the correct direction of the induced current in the conductor?

a)

b)

c)

d)

35.

a)

A

b)

B

c)

C

d)

D

36.

a)

A

b)

B

c)

C

d)

D

37.

Which of the following statements is most true about Newton's law of gravitation?

a)

It is a force that objects with big mass apply on objects with much smaller masses.

b)

It is a force that exists between any two bodies with mass

c)

It is a force that exists between planets, stars and other heavenly bodies.

d)

It is a force that pushes objects around a circle in orbit.

38.

Which of the following formulas is the correct equation for the law of Universal gravitation?

a)

$F=\frac{GM_1M_2}{d^2}$

b)

$F=mg$

c)

$F=\frac{Gd^2}{m_1m_2}$

d)

F= $F=\frac{KQ_1Q_2}{d^2}$

39.

Max Planck's great discovery was that radiation energy is emitted in packets that he called

a)

quanta

b)

wave functions

c)

photons

d)

electrons

40.

A monochromatic light beam with a quantum energy of 9.0 eV is incident upon a photocell. The work function of the photocell is 4.1 eV. What is the maximum kinetic energy of the electron.

a)

4.2 eV

b)

4.4 eV

c)

4.7 eV

d)

4.9 eV

Physics Challenge 9

Total questions: 40

Worksheet time: 7hrs 40mins

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