aluminum, copper, iron
aluminum, iron, copper
copper, aluminum, iron
copper, iron. aluminum
iron, copper, aluminum
Correct answer is C
metals thermal conductivity( W/mk)
IRON 65.7
COPPER 377
ALUMINIUM 218
THERMAL CONDUCTIVITIES OF Al, Fe, and Cu at 100degree Celsius
Which statement is NOT correct about Rutherford’s model of the atom?
The diameter of the nucleus is of the order of 10-15m
The mass of an atom is concentrated in the nucleus
The model is applicable to atoms with one electron in the outer shell
The nucleus of an atom is positively charged
The nucleus is surrounded by an electron cloud.
Correct answer is C
No explanation has been provided for this answer.
0.06 cm3
0.18cm3
0.60cm3
1.20cm3
1.80cm3
Correct answer is E
cubic expansivity and γ = 3α. → 3 * 2.0 × I0\(^{-5}\)
cubic expansivity = 6.0 × I0\(^{-5}\) , Ø = 30°C,
Volume(v\(_1\)) = L\(^3\) = 10\(^3\) → 1000
V\(_2\) = V\(_1\)(1 + γθ)
→ V\(_2\) = 1000[1 + 6.0 × I0\(^{-5}\) * 30]
= 1000[1 + 0.0018]
= 1000 * 1.0018 → 1,001.8
increase in volume = 1,001.8 - 1000
→ 1.8cm\(^3\)
6 ms-1
18 ms-1
32 ms-1
36 ms-1
48 ms-1
Correct answer is A
No explanation has been provided for this answer.
7.80 × 10kms-1
11.2 × 10kms-1
3.56 × 107ms-1
6.00 × 107ms-1
1.20 × 108ms-1
Correct answer is B
The escape speed from Earth's surface is about 11.186 km/s