1.
a) 2x10^4 A (3 Marks)
b) (Not sure) (1 Mark)
c) (Not sure) (2 Marks)
2.
a) I drew the voltmeter being in parallel to the Resistor. (1 Mark)
b) (Not sure) (1 Mark)
c) Found the average voltage, Found the average Resistance, Got a final answer of 5 A (4 Marks)
d) (Not sure) (1 Mark)
3.
a) Used Eh=cmDeltaT to prove that the answer is correct (2 Marks)
b)
i. Used P= E/t to get the time, final answer : 350 s (2 Sig Fig) (3 marks)
ii. (Not sure) (1 Mark)
c)
As the temperature of the water increases, the resistance of the thermistor decreases
This means the voltage across the thermistor also decreases
If the voltage across the thermistor is lower than 0.7 V then the electronic switch will not activate and the Heating element will be off. (I do not know what a MOSFET is, only ever learned about Npn Transistors)(3 Marks)
4.
a) A thermal imaging camera detects Infrared radiation. (1 Mark)
b) Gamma Rays (1 Mark)
c)
i. Used v=fLambda to prove that the answer is correct (2 Marks)
ii. Microwaves ( Not sure if correct) (1 Mark)
5. Open-ended Question (3 Marks)
6.
a)
i. The normal is perpendicular to the perspex block. (1 Mark)
ii. Angle of incidence is from the normal to the ray of red light. Angle of refraction is from the normal to the ray of red light as it is refracted. (1 Mark)
b)
i. 8 degrees (1 Mark)
ii. 44 degrees (1 Mark)
c) To obtain more accurate and reliable set of results (1 Mark)
7.
a) 8.8x10^15 Bq (3 Marks)
b) (Not sure) (2 Marks)
c) (Not sure) (1 Mark)
8.
a)
i.1.92x10^-4 Gy (3 Marks)
ii. 1.92x10^-4 Sv (3 Marks)
b) 0.75 kBq (3 Marks)
9.
a)
i.104m (2 Marks)
ii. 59 Degrees (2 Marks)
b)
i. 1.5 m/s (3 Marks)
ii. (Not sure) (2 Marks)
10.
a) 1.8 m/s^2 (3 Marks)
b) 8.71 m (3 Marks)
c) (Not sure) (3 Marks)
11. Open-ended Question (3 Marks)
12.
a)29400 N (3 Marks)
b)
i, Light -----> Electical (1 Mark)
ii. (Not sure) iii. 2844000 J (3 Marks)
c)
i. 40 N (1 Mark)
ii. 0.02 m/s^2 (4 Marks)
13.
a) (Not sure) (1 Mark)
b) 5505 Degrees celsius (1 Mark)
c) Found the distance traveled by light in a year and times it by 640, proving the answer is correct. ( 3 Marks)
d) (Not Sure) (1 Mark)
Total Marks : 90
There are quite a lot of not sure sections, This is because there could be more than one answer for this question and I'm not sure if what I wrote is specifically correct. This is good because it allows us to share our ideas and opinions.
Please correct me if I am incorrect with any of these answers so I can change them.