Physics Spmnetic!β„’ πŸ”­
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The activity of sample Y becomes 12.5% of the original value after 105 minutes. What is the half life of the sample?

Aktiviti sampel Y menjadi 12.5% daripada nilai asal setelah 105 minit. Berapakah separuh hayat sampel tersebut?
Anonymous Quiz
5%
90 minutes
16%
60 minutes
17%
45 minutes
62%
35 minutes
A balloon is filled with cold air and placed in a warm room. Which of the statement shows that they in thermal equilibrium?
Anonymous Quiz
26%
It rises to the ceiling
23%
It sinks to the floor
29%
It stops expanding
22%
It starts to contract
sebuah belon berisi udara sejuk dan diletak dalam bilik yang suam. Antara yang berikut yang mana tunjuk keseimabangan terma telah capai?
Anonymous Quiz
10%
Belon naik sehingga ke siling
57%
Belon berhenti mengembang
18%
Belon jatuh ke lantai
16%
Belon mula mengecut
The objects in thermal equilibrium when they have the same

Kedua dua objek itu berada dalam keseimbangan terma apabila kedua duanya mempunyai persamaan dalam
Anonymous Quiz
4%
Mass / jisim
82%
Temperature / suhu
12%
Specific heat capacity / muatan haba tentu
2%
Boiling point / takat didih
Which input and output are correct?

Manakah input dan output yang betul?
Anonymous Quiz
14%
A
43%
B
24%
C
18%
D
Which relationship is correct?

Hubungan manakah yang betul?
Anonymous Quiz
24%
W3 > W1 + W2
17%
W3 = W2 - W1
51%
W3 = W1 + W2
7%
W3 < W1 + W2
An aeroplane take off with the help of an upward lift. Which principle explains this situations?

Sebuah kapal terbang berlepas dengan bantuan daya angkatan. Prinsip manakah menerangkan situasi di atas?
Anonymous Quiz
64%
Bernoulli’s principle / prinsip bernoulli
18%
Archimedes’ principle / prinsip archimedes
7%
Pascal’s principle / prinsip pascal
11%
The principle of conversation of momentum / prinsip keabadian momentum
Forwarded from Amazing PhysicsπŸ₯°
n-type semiconductor (5 NAPA)
5 = pentavalent atom
N = n-type
A = Antimony
P = Phosphorus
A = Arsenic
Majority charge carrier: Electrons
Minority charge carrier: Holes
Atom DONOR

p-type semiconductor (3 PBAGI)
3 = trivalent atom
P = p-type
B = Boron
A = Aluminium
G = Gallium
I = Indium
Majority charge carrier: Holes
Minority charge carrier: Electrons
Atom RECEIVER

Credit: animation gif

πŸ“Ί
amazingPhysicsπŸ“Ί
Which circuit can be used to determine electromotive force of a battery?

Litar manakah yang boleh digunakan untuk menentukan daya gerak elektrik sesebuah bateri?
Anonymous Quiz
19%
A
13%
B
16%
C
52%
D
What is radioisotope that can be used to determine the age of a fossil? / Apakah radioisotop yang boleh digunakan untuk menentukan usia sesuatu fosil?
Anonymous Quiz
3%
Radon-222
21%
Uranium-238
73%
Carbon-14
4%
Iodine-131
Which of the following reading is correct? / angata bacaan berikut, yang manakah betul
Anonymous Quiz
52%
A1 = A2
19%
A1 > A2
12%
V1 = V2
17%
V1 > V2