What is Force in Physics? Force is encountered every day — from walking, placing an object on a surface, throwing an object in the air, and even the regular variation of ocean tides. What is force? A force is a push or a pull and a product of the interaction between two or more ...
结果1 题目In physics major, what is the unit of force? A. Kilogram B. Newton C. Meter D. Second 相关知识点: 试题来源: 解析 B。在物理专业中,力的单位是牛顿。A 选项千克是质量单位;C 选项米是长度单位;D 选项秒是时间单位。反馈 收藏 ...
A. force B. power C. both D. neither 相关知识点: 试题来源: 解析 B。解析:force指的是力,是物体对物体的作用。而power在物理中表示功率,功率是表示做功快慢的物理量,也就是做功的能力。所以这里应该选power,A选项force不符合题意,C选项both错误,D选项neither也不符合。反馈...
In physics, “work” is equal to force multiplied by___. A. time B. distance C. speed D. acceleration 相关知识点: 试题来源: 解析 B。在物理学中,功等于力乘以距离。time 是时间;distance 是距离;speed 是速度;acceleration 是加速度。本题考查物理公式以及词汇理解,功的计算公式是 W = Fs,即力...
In the physics experiment, the ___ force was difficult to measure accurately. A. intense B. strong C. powerful D. violent 相关知识点: 试题来源: 解析 A。本题主要考查形容词的辨析。“intense”强调程度强烈、集中;“strong”侧重力量大;“powerful”指有影响力、强有力;“violent”常指剧烈的、暴力...
In physics, the weight of an object is the gravitational force with which Earth attracts it; ___, if a man weighs 150 pounds, this means that Earth pulls him down with a force of 150 pounds.在物理学中,物体的重量是地球吸引它的引力;___,如果一个人重150磅,这意味着地球以150磅的力把他...
In physics, work meansmoving an object when there is some resistance to its movement. Every timewe lift an object, push it, pull it or carry it, we are doing work.Two things are necessary for work to occur. First, force—or energy—must be applied to the object. If no energy is ...
The concept of force is fundamental in physics. Force can cause a change in an object's ___. A. position B. shape C. motion D. size 相关知识点: 试题来源: 解析 C。力在物理中能引起物体运动状态的改变。选项 A“position(位置)”不全面,力不仅能改变位置还能改变运动状态。选项 B“shape(形...
Learn the units of force in physics, the laws that govern it, and the four fundamental forces of the universe.
Here, "W" stands for work, "F" is the force, and "d" represents displacement (or the distance the object travels).Physics for Kidsgives this example problem: A baseball player throws a ball with a force of 10Newtons. The ball travels 20 meters. What is the total work?