5 An object with a mass of 15kg on the Earth is taken to Mars.The gravitational field strength on the Earth is 10N/kg and on the Mars is 3.7N/kg.What are the mass and weight of the object on the Mars?mass / kg weight / N A N155615150411541150 相关知识点: 试题来源: 解析...
A. scale B. ruler C. thermometer D. magnet 相关知识点: 试题来源: 解析 A。选项 A“scale”是天平,可以用来测量物体的质量;选项 B“ruler”是尺子,用来测量长度;选项 C“thermometer”是温度计,用来测量温度;选项 D“magnet”是磁铁。反馈 收藏 ...
百度试题 结果1 题目 An object with a mass of 5kg is moving at a constant velocity of 10m/s. What is the net force acting on the object? A. 10N B. 20N C. 30N D. 0N 相关知识点: 试题来源: 解析 D 反馈 收藏
In physics, ___ is the measure of the amount of matter in an object. A. mass B. weight C. volume D. density 相关知识点: 试题来源: 解析 A。解析:在物理学中,“mass”(质量)是对物体所含物质多少的度量。选项B“weight”指重量,是物体受重力的大小的度量,与质量概念不同。选项C“volume”...
The mass of an object is measured in ___. A. newtons B. joules C. kilograms D. watts 相关知识点: 试题来源: 解析 C。解析:质量的单位是千克(kilograms)。选项 A“newtons”是力的单位;选项 B“joules”是能量单位;选项 D“watts”是功率单位。反馈...
Those questions are all concern with the theory of relativity!1:No,we can use this equation only when the object is in low speed.不,只有当物体以低速运动时才能使用这个问题.2:Yes,it is different! The mass is bigger when the pan is hot.someone thinks mass is constant,but according to the...
An object with mass 3M is launched straight up. When it reaches its maximum height, a small explosion breaks the object into two pieces with masses M and 2M. The explosion provides an impulse to each object in the horizontal direction onl...
5) An object of mass 0.40 kg, hanging from a spring with a spring constant of 8.0 N/m, is set into an up-and down SHM. What is the magnitude of the acceleration of the object at its maximum displacement of 0.10 m?A.0B.0.45 (SI)C.1.0 (SI)D.2.0 (SI)E.2.4 (SI) 相关知识点...
12. An object of mass m slides up an incline at X with a velocity v to stop at point Y.Assuming a uniform frictional effect, what is the magnitude of the velocity of the mass m in terms of v when it is half way up the incline XY which is of length L i. e. when it has tra...
8/An object of mass m is hanging by a string from the roof of a lift. The lift is moving upwards but is slowing down. The tension in the string is A A less than mg B 6exactly mg C greater than mg Dzero 相关知识点: 试题来源: ...