113年hce_kmu — 物理及化學

共 90 題 · 含 AI 詳解

#1 A 10 g object connected to one end of a massless spring undergoes 50 oscillation… › #2 If a simple pendulum oscillates with small amplitude and its length is doubled,… › #3 A certain spring that obeys Hooke’s law is stretched by an external agent. The w… › #4 A child plays a string of length = 20 cm connected with a ball of mass m = 1 kg,… › #5 A grindstone increases in angular speed from 4 rad/s to 12 rad/s in 4 s. Through… › #6 Determine the force per unit length between two infinitely long parallel conduct… › #7 How many 1 $\mu\text{F}$ capacitors must be connected in parallel to store a cha… › #8 Find the resonance frequency of the following LC circuit? › #9 Find the current of the following circuit. › #10 In the $^4\text{He}$ atom, when the $3^{\text{rd}}$ orbital electron jumps to th… › #11 An engine does 15 kJ of work while exhausting 37 kJ to a cold reservoir. What is… › #12 A gas undergoing a series of pressure and volume changes from a state (a) to sta… › #13 The speed of a transverse wave on a string is 170 m/s when the string tension is… › #14 Which of the following aberrations is related to the wavelength of light? › #15 An ideal fluid flows through a horizontal pipe whose diameter varies along its l… › #16 A point in the wave function where the amplitude is zero defines __________. › #17 For a heterogeneous catalyzed reaction, the reaction can be divided into four pr… › #18 The band gap of the semiconductor aluminum phosphide (AlP) is 2.5 eV. What color… › #19 Which radiation is applied in nuclear magnetic resonance (NMR) technique? › #20 Which of the following reactions is a disproportionation reaction? › #21 Specify the number of unpaired electrons in $[\text{CoF}_6]^{3-}$ ($\text{F}^-$… › #22 The $\text{MnO}_4^-$ ion is often used to analyze the $\text{Fe}^{2+}$ concentra… › #23 What is the number of lone pairs of electrons in the $\text{NO}_2^-$ ion? › #24 If you add 0.10 M silver nitrate dropwise to a solution consisting of 0.10 M $\text{Cl}^-$… › #25 When the Pd-106 nucleus is struck with an alpha particle, a proton is produced a… › #26 How many unpaired electrons are present in the $\text{F}_2^{2+}$ ion? The order… › #27 You are holding four identical balloons each containing 10.0 g of a different ga… › #28 What is the simplest formula of a solid containing three types of atoms in a cub… › #29 Among the following covalent bonds, which one has the smallest bond energy? › #30 Which of the following changes shifts the equilibrium position toward product si… › #31 What average power is generated by a 70 kg mountain climber who climbs a summit… › #32 A baseball flies from the ground to a roof with a height $h = 3\text{ m}$ and fa… › #33 A child uses a horizontal rope to pull a toy box weighing 100 N on a table. Give… › #34 A vertically hanging 16 kg block is connected to a cord wrapped around the rim o… › #35 A bullet weighing 100 g is diagonally fired into the end of a 0.5 m long stick w… › #36 A frictionless curve of radius 500 m is banked with a banking angle $\theta = 30^\circ$… › #37 A thin rod of length 100 cm and mass 6 kg with the rotation axis through its cen… › #38 A gun fired vertically and hits a wooden block and stops inside. The bullet and… › #39 One particle of mass $M = 0.5 \times 10^{-9}\text{ kg}$ and velocity $V = 4 \times 10^5\text{ m/s}$… › #40 If two springs with spring constants $k$ and $3k$ respectively are connected in… › #41 An electronics technician wishes to construct a parallel plate capacitor using r… › #42 Two conducting wires A and B of the same length and radius are connected across… › #43 A heart surgeon monitors the flow rate of blood through an artery using an elect… › #44 A rectangular coil with 1000 turns has a length and width of 10 cm and 20 cm res… › #45 A rectangular conductor coil has width $L = 10\text{ cm}$, resistance $R = 0.3 \Omega$… › #46 A $5 \mu\text{F}$ capacitor is linked to an electromotive force experiencing uni… › #47 In a certain cyclotron a proton moves in a circle of radius 0.50 m. The magnitud… › #48 A gas is at 200 K. If we wish to double the root mean square speed ($v_{\text{rms}}$… › #49 In the figure, a gas enclosed within a sealed chamber follows a closed path as i… › #50 When a fixed pressure of one atmosphere is maintained, an ideal gas receives 25… › #51 Two objects with temperatures T1 and T2 (T2 = 2T1) are isolated from their surro… › #52 The figure shows the configuration of a beam-expander (5x) formed by two positiv… › #53 A police car with a 500 Hz siren is moving at 20 m/s. What is the total frequenc… › #54 A doppler flow meter transmit ultrasound of 10 MHz to measure the blood flow. If… › #55 Thin film coating is a technique for anti-reflection. How thick a thin film with… › #56 An acrylic cube with a volume of $8\text{ cm}^3$ registers a weight of 40 g on a… › #57 The net nuclear fusion reaction inside the Sun can be written as $4^1\text{H} \rightarrow ^4\text{He} + E$… › #58 In Bohr’s hydrogen theorem, find the ratio of the longest wavelength between Bal… › #59 How fast is needed for an $\text{O}_2^+$ ion to move in a circular orbit of radi… › #60 A spacecraft is flying towards Earth at a speed of 0.7 c. When it is 8 light-yea… › #61 Which of the following carbon atoms exhibits an oxidation state of +3? › #62 Given the electron configuration of an element X is $[\text{Ar}]3d^{10}4s^24p^3$… › #63 How much energy is needed to convert 100 g of ice at $0^\circ\text{C}$ to water… › #64 What concentration of glucose in water is needed to produce an aqueous solution… › #65 Which of the followings is not necessary for protein synthesis at the stage of p… › #66 Give the effusion time of 250 mL of methane through a small hole is 48 s. How lo… › #67 Given the second half-life for a second order reaction is 60 seconds. How much t… › #68 Which of the following trends is incorrect? › #69 At $27^\circ\text{C}$, an ideal gas with a mass of 0.4 g in 100 mL has a pressur… › #70 The rate constant for a reaction increases from $10.0\text{ s}^{-1}$ to $100.0\text{ s}^{-1}$… › #71 Below reaction was studied at $-10^\circ\text{C}$ and the following results were… › #72 Which of the following statements is correct? › #73 At a certain temperature, placing one mole of ammonia gas into a sealed containe… › #74 Complete the Lewis structure for the molecular formula ($\text{C}_5\text{H}_7\text{ON}$… › #75 A product is electroplated by copper from $\text{CuSO}_4$ solution. A constant c… › #76 An unknown compound is cooled at 1 atm, and it freezes at 50.0 K to form Solid I… › #77 What are the signs (+, –, or 0) of $\Delta H$, $\Delta S$, and $\Delta G$ for th… › #78 The reduction potentials for $\text{Au}^{3+}$ and $\text{Cr}^{3+}$ are as follow… › #79 How many different structures do $\text{SeCl}_4$, $\text{CBr}_4$, $\text{KrF}_4$… › #80 A weak acid HA is dissolved in enough water to prepare an acidic solution. The p… › #81 The pH of a bottle of vinegar is 2.75 at $25^\circ\text{C}$. What is the mass pe… › #82 Which of the following complexes can exhibit optical isomerism? (… › #83 A compound has a formula of $[\text{Pt(PPh}_3)_2\text{(NCS)}_2]$. How many isome… › #84 Aluminum (Al) metal crystallizes in a face-centered cubic structure. The relatio… › #85 Which of the following statements correctly describes the signs of q (heat) and… › #86 Carminic acid, a naturally occurring red pigment extracted from the cochineal in… › #87 Biphenyl ($\text{C}_{12}\text{H}_{10}$) is an organic molecule formed by connect… › #88 Which of the following molecules is achiral? › #89 Which of the following molecules possesses the strongest acidity? › #90 What monomer(s) is/are needed to synthesize the polymer shown below? I. $\text{HOCH}_2\text{CH}_2\text{OH}$… ›