Grade 11 Physics practice

What is on the worksheet

1. An optical image has magnification magnitude 2.2. The object height is 22 mm. Find image height magnitude. Round to 3 decimal places if needed. Answer in mm.

2. A constant 13 N force acts through a 23 m displacement. The cosine of the angle between them is -1. Find the work by this force. Round to 3 decimal places if needed. Answer in J.

3. A 42 cm straight wire carries 1 A perpendicular to a uniform field of 0.6 T. Find magnetic force magnitude. Round to 3 decimal places if needed. Answer in N.

4. An ideal linear spring has k = 680 N/m and extension 50 cm. Find the stored elastic energy. Round to 3 decimal places if needed. Answer in J.

5. For a uniform slab, k = 0.6 W/(m·K), area = 9 m², thickness = 10 cm and temperature difference = 26 K. Assuming steady one-dimensional conduction, find thermal power. Round to 3 decimal places if needed. Answer in W.

6. A 11 kg object has signed velocity 2 m/s on a chosen axis. Find its signed momentum. Round to 3 decimal places if needed. Answer in kg·m/s.

7. A 7 kg object changes speed from 2 m/s to 11 m/s. Find final minus initial kinetic energy. Round to 3 decimal places if needed. Answer in J.

8. A constant 77 N force acts through a 19 m displacement. The cosine of the angle between them is 0.5. Find the work by this force. Round to 3 decimal places if needed. Answer in J.

9. Mix 10 kg at 25 °C with 9 kg at 87 °C of the same liquid. Assume equal constant specific heat, no phase change, negligible container heat capacity and no losses. Find equilibrium temperature. Round to 3 decimal places if needed. Answer in °C.

10. For a uniform slab, k = 0.4 W/(m·K), area = 18 m², thickness = 8 cm and temperature difference = 23 K. Assuming steady one-dimensional conduction, find thermal power. Round to 3 decimal places if needed. Answer in W.

11. Mix 3 kg at 17 °C with 9 kg at 73 °C of the same liquid. Assume equal constant specific heat, no phase change, negligible container heat capacity and no losses. Find equilibrium temperature. Round to 3 decimal places if needed. Answer in °C.

12. An echo returns in 0.6 s with sound speed 340 m/s. Find distance to the reflector.

13. A 10 kg object changes speed from 11 m/s to 27 m/s. Find final minus initial kinetic energy. Round to 3 decimal places if needed. Answer in J.

14. An ohmic resistor of 32 Ω has potential difference 28 V. Find current. This is a paper calculation, not a construction instruction. Round to 3 decimal places if needed. Answer in A.

15. An ideal spring obeys F = kx with k = 130 N/m. A force of 1 N is applied within its linear range. Find its extension. Round to 3 decimal places if needed. Answer in m.

16. Carts 10 kg at 6 m/s and 11 kg at -2 m/s collide and stick. Velocities share one signed axis; external impulse is zero. Find their final velocity. Round to 3 decimal places if needed. Answer in m/s.

17. An ohmic resistor of 48 Ω has potential difference 8 V. Find current. This is a paper calculation, not a construction instruction. Round to 3 decimal places if needed. Answer in A.

18. Two carts approach each other on a straight track at 10 m/s and 22 m/s. How fast is their separation decreasing? Round to 3 decimal places if needed. Answer in m/s.

19. A 2 kg sample with specific heat 2100 J/(kg·°C) warms by 30 °C. No phase change or heat loss occurs. Find energy supplied. Round to 3 decimal places if needed. Answer in J.

20. An ideal linear spring has k = 470 N/m and extension 39 cm. Find the stored elastic energy. Round to 3 decimal places if needed. Answer in J.