结果1 题目The force of gravity makes objects ___. A. fly B. float C. fall D. rise 相关知识点: 试题来源: 解析 C。解析:重力使物体落下,fall 正确。A 选项 fly 飞;B 选项 float 漂浮;D 选项 rise 上升都与重力作用不符。反馈 收藏 ...
百度试题 结果1 题目The force of gravity makes things fall ___. A. up B. down C. left D. right 相关知识点: 试题来源: 解析 B。因为重力的作用是使物体向下落。反馈 收藏
“gravity” means___.In this passage, the word “gravity” means___.A. the pull of everything.B. the force of attraction(吸引) among objects.C. the force which attracts objects towards the centre of the earth D. the force which attracts the E. arth towards the sun.答案：C ...
Related to Force of gravity:acceleration of gravity grav·i·ta·tion (grăv′ĭ-tā′shən) n. 1.Physics a.The natural phenomenon of attraction between physical objects with mass or energy; the weakest of the four fundamental forces of nature. Also calledgravity. ...
Calculate the force of gravity on a 2 kg mass at Earth's surface. The mass of Earth is 6 * 10 ^{24} kg, and its radius is 6.4 * 10 ^6. Calculate the force of gravity on a 16 kg mass at Earth's surface. The mass of Earth is 6*10^{2...
The force of gravity makes things fall to the ground. “gravity” means ___. A. heavy B. weight C. pull D. attraction 相关知识点: 试题来源: 解析 D。“gravity”是重力,即一种吸引力,与“attraction”意思相符。“heavy”是重的;“weight”是重量;“pull”是拉。反馈...
This is a well-known scientific ___. A. law B. theory C. hypothesis D. observation 相关知识点: 试题来源: 解析 A。解析:重力使物体落向地球是科学定律,选项 B 理论通常是对现象的解释;选项 C 假设是未经证实的推测;选项 D 观察只是看到的现象,不是定律。反馈 收藏 ...
A.calculate the force of gravity on a 65-kg person in the following:a.at the surface of the Earth (R=6400km)b.at twice the Earth's radiusc.at four times the Earth's radiusB.Plot this gravitational force with distance.What pattern or relationship do you expect to obtain?Does your ...
Answer to: The force of gravity on the Moon is said to be 1/6th of that on the Earth . What would be the mass of 12kg weighed on the surface of the...
using the force of gravity and the force of buoyancy for a push towards the high convertible into a rotary motion and through a converter, to produce any k... DS Michele 被引量: 0发表: 2005年 High- Field Combustor of a Rim─Rotor Rotary Ramjet Engine High-g field combustion, such as...