【全部】 - 學士後西醫物理及化學2024~2020難度:(41~50)-阿摩線上測驗
惠利剛剛做了阿摩測驗,考了20分
61. Which is an incorrect statement for heat capacity of ideal gases?
(A) Cv is identical for monatomic ideal gases
(B) Molecular motion of monatomic ideal gas is zero
(C) Cv of polyatomic ideal gas is larger than Cv of monatomic ideal gas
(D) Cp > Cv in all ideal gases
(E) Cp =
R for monatomic ideal gas
8. A tube with three openings has three
different cross-sectional areas
(A1:A2:A3 = 2:1:3), as shown in the
figure. The pressure difference is 25 Pa
between A1 and A2. If v1 = 0.125 (m/s),
find the density of the fluid (kg/m3
).
(A) 561
(B) 982
(C) 1067
(D) 1534
(E) 1698
15. An energy of 13.6 eV is needed to ionize an electron from the ground state of a hydrogen atom.
What is the longest photon wavelength needed to accomplishes this task? (Plank constant = )
(A) 60 nm
(B) 70 nm
(C) 80 nm
(D) 90 nm
(E) 100 nm
46. A hydraulic jack with two pistons is shown in the figure. The radii
are 10 cm and 5 cm, and the weights are 40 kg and 1 kg for the
left and right piston, respectively. A ball weighs 9 kg is placed on
the right piston. Find the height difference between two pistons in
equilibrium status. (Gravitational acceleration g = 10 m/s2
)
(A) 0 cm
(B) 10 cm
(C) 1 m
(D) 10 m
(E) 20 m
49. A block (m1) with a weight of 10 kg was placed on a
wooden bar with a weight of 2 kg. The left end of the
bar was attached firmly to a triangle. How much force
(F) does it take to keep the system in horizontal
equilibrium? (Gravitational acceleration g = 10 m/s2
)
(A) 165 N
(B) 224 N
(C) 283 N
(D) 318 N
(E) 361 N
85. Hydroxylamine nitrate contains 29.17 mass % N, 4.20 mass % H, and 66.63 mass % O. Determine
its empirical formula.
(A) HNO
(B) H2NO2
(C)
(D)
(E) H2NO3