114年hce_nchu — 物理

共 50 題 · 含 AI 詳解

#1 The graph shows acceleration versus time for three different objects, $\alpha$,… › #2 Consider a projectile launched upward near the surface of Earth from the origin… › #3 A 740-kg elevator accelerates upward at $0.2 \text{ m/s}^2$, pulled by a cable o… › #4 Blocks of 1, 2, and 3 kg are lined up on a frictionless table, as shown in the f… › #5 Patients with severe leg breaks are often placed in traction, with an external f… › #6 An elastic cord used in bungee jumping is normally 10 m long and has spring cons… › #7 A 1.5-tonne car accelerates from 10 to 20 m/s in 10 s on a flat road. How much w… › #8 Based on Newton's law of universal gravitation and Newton's second law of motion… › #9 A rocket is launched vertically upward at velocity $v$ around the surface of Ear… › #10 In the figure, blocks $B$ and $C$ have masses $2m$ and $m$, respectively, and ar… › #11 A uniform, narrow rod of mass $M$ and length $L$ rotates freely about an axis th… › #12 A solid ball of mass $M$ and radius $R$ starts from rest and rolls down a hill.… › #13 For a simple pendulum with length $L$ swinging back and forth through a small an… › #14 The figure shows three pairs of forces acting on an object. Which pair, acting a… › #15 The density of a rubber ball is three-fifths that of water. When placed in water… › #16 Two identical stars are different distances from Earth, and the intensity of the… › #17 A string 1 m long is clamped tightly at one end and is free to slide up and down… › #18 An incompressible fluid of density $\rho$ flows through a horizontal pipe of cro… › #19 A U-shaped tube open at both ends contains water and a quantity of oil occupying… › #20 You draw 200 g of $10^\circ\text{C}$ water from the tap and pop it into an 800-W… › #21 $C_v$ and $C_p$ are defined as the molar specific heat at constant volume and th… › #22 Based on the first law of thermodynamics, in isothermal ideal-gas processes, whi… › #23 Based on the first law of thermodynamics, in adiabatic ideal-gas processes, whic… › #24 Which of the following atom or molecule has three rotational degrees of freedom? › #25 “The entropy of the universe can never decrease.” is a statement related to › #26 A 16-nC charge is distributed uniformly along the $x$ axis from $x = 0$ to $x = 4 \text{ m}$… › #27 Charges $q$ and $Q$ are placed on the $x$ axis at $x = 0$ and $x = 2.0 \text{ m}$… › #28 For the potential $V = 3x^2z - 2yz^3$, what is the corresponding electric field… › #29 Determine the equivalent capacitance of the combination shown when $C = 24 \text{ }\mu\text{F}$… › #30 Light bulb A is rated at 60 W and light bulb B is rated at 100 W. Both are desig… › #31 What is the equivalent resistance between points A and B in the figure when $R = 20 \text{ }\Omega$… › #32 A 2.0-m wire carries a current of 15 A directed along the positive $x$ axis in a… › #33 At $t = 0$ the switch S is closed with the capacitor uncharged. If $C = 30 \text{ }\mu\text{F}$… › #34 We find that $N$ current loops are coplanar and coaxial. The first has radius $a$… › #35 A wire with current $I$ is bent into the shape in a uniform magnetic field $\vec{B}$… › #36 A square loop ($L = 0.20 \text{ m}$) consists of 50 closely wrapped turns, each… › #37 Coaxial Cable A has twice the length, twice the radius of the inner solid conduc… › #38 For the circuit shown, what is the rate of change of the current in the inductor… › #39 A flat coil of wire consisting of 20 turns, each with an area of $50 \text{ cm}^2$… › #40 An open circuit consists of a $12 \text{ }\mu\text{F}$ parallel plate capacitor… › #41 If the maximum E-component of an electromagnetic wave in free space is 600 V/m,… › #42 What is the average value of the magnitude of the Poynting vector at 1 meter fro… › #43 A light ray is partially reflected and partially refracted at a boundary between… › #44 When light is refracted, the quantity that does not change in either process is… › #45 An optical fiber has a refractive index of $n = 2.0$, while the surrounding air… › #46 To create a nonreflective coating for a camera lens, a film of index of refracti… › #47 White light is spread out into spectral hues by a diffraction grating. If the gr… › #48 The light intensity incident on a metallic surface produces photoelectrons with… › #49 When a photon collides with a free electron at rest and the direction of motion… › #50 A baseball (1 kg) has an energy of 100 joules. If its uncertainty in position is… ›