重庆考试:SAT2物理考试的常用公式整理(1)
2015-07-30 10:38
来源:
作者:
SAT II物理力学常见公式Physics Formulas - Mechanics
Kinematics Formulas
The Kinematic Equations apply to one-dimmensional motion with costant acceleration from point 1, situated d1 from a point of reference to point 2, situated d2 from the same point of reference. v1 is the velocity at point 1 and v2 is the velocity at point 2.
v2 = v1 + a·t
d2 = d1 + (v1 + v2)·t/2
d2 = d1 + v1·t + a·t2/2
d2 = d1 + v2·t - a·t2/2
v22 = v12 + 2a(d2 - d1)
Average velocity: vav = Δd/Δt
Average acceleration: aav = Δv/Δt
Rotational kinematics equations with constant angular acceleration:
ω2 = ω1 + α·t
Φ2 = Φ1 + (ω1 + ω2)·t/2
Φ2 = Φ1 + ω1·t + α·t2/2
Φ2 = Φ1 + ω2·t - α·t2/2
ω22 = ω12 + 2α(Φ2 - Φ1)
Average angular velocity: ωav = Δθ/Δt
Average angular acceleration: αav = Δω/Δt
Frequency: f = ω/2π
Period: T = 2π/ω
Relations between angular and linear variables:
l = Φ·r
v = ω·r
a = α·r
Dynamics Formulas
Pressure: P = F/A
Newton's Second Law: F = m·a
Force of kinetic friction: Ff = μ·N
Hooke's Law: F = -k·x
Centripetal Force: Fc = m·v2/R
Centripetal acceleration: ac = v2/R
Work, Energy, Conservation Laws Formulas
Work: W = F · d = Fdcos(α)
Potential Energy: PE = m·g·h
Kinetic Energy: KE = m·v2/2
Mechanical Energy: E = KE + PE
Instantaneous Power: P = F·v
The Work-Energy Theorem: W = ΔKE
Gravitation Formulas
Newtonian gravity formula: Fg = G·m·M/R2
Kepler's Third Law: T2/a3 = ct.
SAT II物理热力学常见公式Physics Formulas - Thermodynamics
Heat added or emoved: Q = m·c·ΔT
Change in Internal Energy: ΔU = Q - W
Boyle's Law: P1V1 = P2V2
Charles's Law: V1/T1 = V2/T2
Efficiency of a heat engine(%): E = (W/Qhot)·100
热门搜索: SAT12人班 25人班 基础班 强化班 住宿班 单项冲刺 美加留学直通车
(责任编辑:张梦璇)
新东方重庆学校微信(微信号:xdf_cq)
最新考试资讯、教育新闻,请扫一扫二维码,关注我们的官方微信!
版权及免责声明
①凡本网注明"稿件来源:新东方"的所有文字、图片和音视频稿件,版权均属新东方教育科技集团(含本网和新东方网) 所有,任何媒体、网站或个人未经本网协议授权不得转载、链接、转贴或以其他任何方式复制、发表。已经本网协议授权的媒体、网站,在下载使用时必须注明"稿件来源:新东方",违者本网将依法追究法律责任。
② 本网未注明"稿件来源:新东方"的文/图等稿件均为转载稿,本网转载仅基于传递更多信息之目的,并不意味着赞同转载稿的观点或证实其内容的真实性。如其他媒体、网站或个人从本网下载使用,必须保留本网注明的"稿件来源",并自负版权等法律责任。如擅自篡改为"稿件来源:新东方",本网将依法追究法律责任。
③ 如本网转载稿涉及版权等问题,请作者见稿后在两周内速来电与新东方网联系,电话:010-60908555。