113年hce_nchu — 物理

共 50 題 · 含 AI 詳解

#1 Cart A, of mass $m$, starts from rest and travels in a straight line with accele… › #2 An automobile traveling along a straight road increases its speed from $30.0 \text{ m/s}$… › #3 A particle moves in the $xy$ plane with a constant acceleration given by $\vec{a} = -4\hat{j} \text{ m/s}^2$… › #4 Two balls, projected at different times so they don't collide, have trajectories… › #5 If $M = 6.0 \text{ kg}$, what is the tension in string 2? Note that the accelera… › #6 The horizontal surface on which the objects slide is frictionless. If M = $1.0 \text{ kg}$… › #7 The total force needed to drag a box at constant speed across a surface with coe… › #8 A race car traveling at $100 \text{ m/s}$ enters an unbanked turn of $400 \text{ m}$… › #9 A certain pendulum consists of a $1.5\text{-kg}$ mass swinging at the end of a s… › #10 Two equal masses are raised at constant velocity by ropes that run over pulleys,… › #11 A ball of mass $m_B$ is released from rest and acquires velocity of magnitude $v_B$… › #12 A wheel rotating about a fixed axis with a constant angular acceleration of $2.0 \text{ rad/s}^2$… › #13 A uniform cylinder of radius R, mass M, and length L rotates freely about a hori… › #14 A body of mass $5.0 \text{ kg}$ is suspended by a spring which stretches $10 \text{ cm}$… › #15 The motion of a particle connected to a spring is described by $x = 10 \sin \pi t$… › #16 Bats can detect small objects such as insects that are of a size on the order of… › #17 If $y = 0.2 \sin(30x - 400t) \text{ (SI units)}$, the velocity of the wave is › #18 An organ pipe open at both ends is $1.5 \text{ m}$ long. A second organ pipe tha… › #19 Two harmonic waves traveling in opposite directions interfere to produce a stand… › #20 A hydraulic lift raises a $2000\text{-kg}$ automobile when a $500\text{-N}$ forc… › #21 People can snorkel down to a depth of roughly one meter. This means that the add… › #22 Consider a thin horizontal layer of the atmosphere, of thickness $dy$, of area $A$… › #23 A gas expands from A to B as shown in the graph. Calculate the work (in joules)… › #24 A heat pump has a coefficient of performance of 4. If the heat pump absorbs $20 \text{ cal}$… › #25 Consider $n$ moles of an ideal gas being compressed isothermally at absolute tem… › #26 A charge per unit length given by $\lambda(x) = bx$, where $b = 12 \text{ nC/m}^2$… › #27 Light of wavelength $580 \text{ nm}$ is incident on a slit having a width of $0.300 \text{ mm}$… › #28 For a long ideal solenoid having a circular cross-section, the magnetic field st… › #29 You are designing a generator to have a maximum emf of $8.0 \text{ V}$. If the g… › #30 A neutron has a mass of $1.67 \times 10^{-27} \text{ kg}$. Its de Broglie wavele… › #31 What is the quantum number $n$ of a particle of mass $m$ confined to a one-dimen… › #32 A conducting circular loop is placed in a uniform magnetic field of $0.04 \text{ T}$… › #33 An alternating current is supplied to an electronic component with a warning tha… › #34 An ac circuit is shown in the figure. The rms current in the circuit is measured… › #35 Two flat $4.0 \text{cm} \times 4.0 \text{cm}$ electrodes carrying equal but oppo… › #36 Which one of the phasor diagrams shown below best represents a series LRC circui… › #37 A solid nonconducting sphere of radius $R$ carries a uniform charge density thro… › #38 Which of the following expressions is a static electric field › #39 The coil shown in the figure has 2 turns, a cross-sectional area of $0.20 \text{ m}^2$… › #40 A fish appears to be $2.00 \text{ m}$ below the surface of a pond when viewed al… › #41 As shown in the figure, point charges $q$ and $Q$ are positioned as shown. If $q = +2.0 \text{ nC}$… › #42 In a transformer, how many turns are necessary in a $110 \text{V}$ primary if th… › #43 Charge of uniform density ($20 \text{ nC/m}^2$) is distributed over a cylindrica… › #44 Light of wavelength $400 \text{ nm}$ falls on a metal surface having a work func… › #45 Consider: radio waves (r), visible light (v), infra-red (i), x-rays (x), ultravi… › #46 As shown in the figure, a small particle of charge $q = -7.0 \times 10^{-6} \text{ C}$… › #47 A hydrogen atom in the $4f$ state has a total angular momentum (in terms of $\hbar$… › #48 What is the energy of an incident photon that is just enough to excite a hydroge… › #49 Three long wires parallel to the $x$ axis carry currents as shown. If $I = 20 \text{ A}$… › #50 A mall bulb is rated at $7.50 \text{ W}$ when operated at $125 \text{ V}$. The t… ›