| |
啥也不说了,把这些东西翻成中文我也未必能做上来一道,各位会做么?WD ©樱花大战--浪漫樱姿BBS -- 樱花大战--浪漫樱姿BBS Fa5 [YMn A positively charged glass rod attracts object X. :$: The net charge of object X h;3|b (1) may be zero or negative ;xnJ: (2) may be zero or positive # (3) must be negative q@s^0 (4) must be positive#7dA ©樱花大战--浪漫樱姿BBS -- 樱花大战--浪漫樱姿BBS NZm The potential energy stored in a compressed )dYRm: spring is to the change in the spring’s length as the vx- kinetic energy of a moving body is to the body’s r4 (1) speed (3) radius Q (2) mass (4) acceleration t ©樱花大战--浪漫樱姿BBS -- 樱花大战--浪漫樱姿BBS ; What is the resistance at 20.°C of a 2.0-meter + length of tungsten wire with a cross-sectional %K>'4c area of 7.9 × 10–7 meter2? 9n (1) 5.7 × 10–1 Ω (3) 7.1 × 10–2 Ω K (2) 1.4 × 10–1 Ω (4) 4.0 × 10–2 Ω qfQ ©樱花大战--浪漫樱姿BBS -- 樱花大战--浪漫樱姿BBS f-Tm What is the speed of a ray of light S=TU{ (f = 5.09 × 1014 hertz) traveling through a block F{ of sodium chloride? yMw--F (1) 1.54 × 108 m/s (3) 3.00 × 108 m/s WhVf (2) 1.95 × 108 m/s (4) 4.62 × 108 m/s phM ©樱花大战--浪漫樱姿BBS -- 樱花大战--浪漫樱姿BBS [L8v Two waves traveling in the same medium and R having the same wavelength (λ) interfere to h. create a standing wave. What is the distance }% between two consecutive nodes on this standing yp.Rd wave? x ©樱花大战--浪漫樱姿BBS -- 樱花大战--浪漫樱姿BBS ] A tritium nucleus is formed by combining two zY-j,B neutrons and a proton. The mass of this nucleus jT?C#} is 9.106 × 10–3 universal mass unit less than the @Ir0 combined mass of the particles from which it is #JBmq] formed. Approximately how much energy is w released when this nucleus is formed? @r (1) 8.48 × 10–2 MeV (3) 8.48 Mev .I ©樱花大战--浪漫樱姿BBS -- 樱花大战--浪漫樱姿BBS fLd."E Pieces of aluminum, copper, gold, and silver (hGs wire each have the same length and the same E4|x cross-sectional area. Which wire has the lowest i5 resistance at 20°C? J (1) aluminum (3) gold {'':xb (2) copper (4) silver+(g!XK ©樱花大战--浪漫樱姿BBS -- 樱花大战--浪漫樱姿BBS FgE A lithium atom consists of 3 protons, 4 neutrons, D and 3 electrons. This atom contains a total of 53<.@q (1) 9 quarks and 7 leptons ag]K3 (2) 12 quarks and 6 leptons wl (3) 14 quarks and 3 leptons R3 (4) 21 quarks and 3 leptons R'W,l" ©樱花大战--浪漫樱姿BBS -- 樱花大战--浪漫樱姿BBS g If a proton were to combine with an antiproton, Waa they would annihilate each other and become R8n energy. Calculate the amount of energy that s@T8 would be released by this annihilation. tIiuj- ©樱花大战--浪漫樱姿BBS -- 樱花大战--浪漫樱姿BBS 29qD The magnitude of the force the Sun exerts on Uranus is 1.41 × 1021 newtons. Explain how it is possible for u2.// the Sun to exert a greater force on Uranus than Neptune exerts on Uranus. a9]b ©樱花大战--浪漫樱姿BBS -- 樱花大战--浪漫樱姿BBS m What fundamental force holds quarks together : to form particles such as protons and neutrons? IA)cr@ (1) electromagnetic force sw$#r/ (2) gravitational force [8 (3) strong force 9p8& (4) weak force {07= ©樱花大战--浪漫樱姿BBS -- 樱花大战--浪漫樱姿BBS 5\ku What is the magnitude of the force needed to keep a 60.-newton rubber block moving across level, dry ,8l`d/ asphalt in a straight line at a constant speed of 2.0 meters per second? bw[ (1) 40. N (3) 60. N gHgYU (2) 51 N (4) 120 N rUS" ©樱花大战--浪漫樱姿BBS -- 樱花大战--浪漫樱姿BBS _Hva What is the wavelength of a light ray with frequency 5.09 × 1014 hertz as it travels through Lucite? M (1) 3.93 × 10–7 m (3) 3.39 × 1014 m Y%uJBo (2) 5.89 × 10–7 m (4) 7.64 × 1014 m h ©樱花大战--浪漫樱姿BBS -- 樱花大战--浪漫樱姿BBS p ©樱花大战--浪漫樱姿BBS -- 樱花大战--浪漫樱姿BBS j; (2) 2.73 MeV (4) 273 MeVsP ;5 ©樱花大战--浪漫樱姿BBS -- 樱花大战--浪漫樱姿BBS / ©樱花大战--浪漫樱姿BBS -- 樱花大战--浪漫樱姿BBS qwcP\h ps:答案baidu上有,如果哪位真的有雅兴清搜索“英语物理题”查查看。最后,千万表告诉我这些题真的有人会做,来这里灌水的话请随便。?y=
| |