The scientist explained to us that the force of gravity2. What scientists think is that the Earth became differentbecause of small plants growing in the water on its sur-face.3. It is obvious to the students that they should get wellprepared for their future.4. The last time we had grea...
instead of C. in case of D. in spite of 相关知识点: 试题来源: 解析 A。本题考查表语从句。“because of”表示“因为”,句子意思是“科学已经证明地球之所以是现在这样是因为重力的作用”。表语从句在这里解释了地球现状的原因。它与主语从句不同,主语从句在句中充当主语成分。与定语从句的区别在于定语从句...
Is the following statement true or false: "The alternative theory to gravity is that there is a repulsion wave/force from the sky." Explain. Why don't we have a way to model gravity? What was the insight of Newton during the formulation of gravity?
We have all experienced the force of gravity. It is what happens to you when you jump up into the air. Disappointingly, we tend to fall right back down to the ground. But what if we could switch gravity off? What will happen if the gravity vanishes? Buckey, an astronomer, says that...
C。解析:Newton's law of universal gravitation states that every particle attracts every other particle in the universe with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. 牛顿万有引力定律指出,宇宙中的每个...
What is gravity? A. A force that pulls things towards the center of the earth. B. A force that pushes things away from the earth. C. A force that makes things float. 相关知识点: 试题来源: 解析 A。重力是使物体向地球中心吸引的力。不是推开物体或使物体漂浮。
What is the force that keeps the planets in orbit around the sun? A. Gravity B. Magnetic force C. Electrical force D. Friction 相关知识点: 试题来源: 解析 A。引力使行星围绕太阳运行。选项 B 磁力不是使行星围绕太阳运行的力。选项 C 电力不是使行星围绕太阳运行的力。选项 D 摩擦力不是使行星...
A. A force. B. The curvature of spacetime. C. An attraction between objects. D. A field. 相关知识点: 试题来源: 解析 B。解析:文中提到 General relativity describes gravity as the curvature of spacetime.(广义相对论将引力描述为时空的弯曲。)反馈 收藏 ...
Find the magnitude and direction of the net force on q2. How can a small force impart the same momentum to an object as a large force? How do you calculate the net force of an object? What is the difference between gravity and gravitational force?
G-force, also known as gravitational force, is a term used to describe the force of gravity acting on an object. It is a measurement of the acceleration experienced by an object due to gravity and is typically measured in units of acceleration. G-force is an important concept in physics,...