百度试题 结果1 题目Friction is a force that opposes ___. A. motion B. rest C. force D. gravity 相关知识点: 试题来源: 解析 A。摩擦力是一种阻碍运动的力。反馈 收藏
Friction is a force that we encounter in our daily lives. When we walk, friction between our shoes and the ground allows us to move forward. Without friction, we would slip and find it impossible to walk. Another example of friction is when we apply the brakes on a bicycle or a car....
The friction force is classified into two types: static friction force and kinetic friction force. In the first case, it is the friction force felt by an object that does not slide over another but is in a state of imminent motion. In the case of the second, it is the friction felt ...
12. Some animals such as snakes hibernate in the winter because the winter season only provides a cold, frozen ground where food is extremely rare. (词性: ___意思: ___) 13. It is obvious that industry in Britain has declined since the 1970s. (词性: ___意思: ___) 14. Although it...
The force that makes a pen fall off a table is ___. A. gravity B. friction C. force D. magnetism 相关知识点: 试题来源: 解析 A。笔从桌子上掉下来是因为重力作用。B 选项 friction 摩擦力不是笔掉下来的原因。C 选项 force 力太宽泛。D 选项 magnetism 磁力,这里没有磁力。反馈 收藏 ...
Force is everywhere and it comes in a variety of sizes, directions, and type. We can define Force as the push or pull of an object. Learn Force definition, unit & types of Force with solved examples.
An object is falling freely. The force acting on it is ___. A. gravity B. friction C. magnetism D. electricity 相关知识点: 试题来源: 解析 A。物体自由下落是因为受到重力的作用。选项 B、C、D 都与自由下落的物体无关。反馈 收藏
百度试题 结果1 题目What is the force that pulls objects towards the center of the Earth? A. Friction B. Gravity C. Magnetism D. Electricity 相关知识点: 试题来源: 解析 B。解析:重力是使物体向地球中心下落的力。反馈 收藏
Friction is caused by Ainterlocking betweeen the irregularities on the contact surface. Bapparent area of contact. Crepulsive force between air and surface in earth . Dgravitational force of attraction towards the earth.Submit Myopia is caused due to Athe high diverging power of the eye lens....
aConcentrated Soulution 被集中的Soulution [translate] atomorrow Women's Day. 明天妇女的天。 [translate] aIn our case, a1 represents the magnitude of the friction force, and a2 is the angular velocity of the wiper arm. 在我们的情况, a1代表摩擦力的巨大,并且a2是弧刷臂的角速度。 [translate] ...