The force of gravity acting on an object is also that object's weight. When you step on a scale, the scale reads how much gravity is acting on your body. The formula to determine weight is [source: Kurtus]: weight = m x g where m is an object's mass, and g is the acceleration...
解析 B。原因:“The strength of gravity varies from one celestial body to another. For example, the gravity on the Moon is much weaker than on Earth. This is because the Moon has a smaller mass and radius compared to Earth.”。反馈 收藏 ...
Scientists are now thinking of creating a lunar (月球的) time zone.2At the moment, astronauts are using time zones of their own countries. But there could be safety problems caused by the differences in time-telling. Setting up a lunar time zone is not easy.3Since gravity is weaker in ...
Objects with heavier mass have more gravity. The closer the two objects are, the heavier the gravitational pull between them. Gravity gets weaker with distance. The above formula is used to calculate the gravitational force between two objects. Gravity on Earth In comparison with other celestial ...
aAll objects pull on each other. This pull is known as gravity. The side of Earth closest to the moon experiences a stronger pull than the side farthest from the moon. This is because the force of gravity gets weaker as distance gets greater. 所有对象拉扯在彼此。 这拉扯通认作为重力。 地...
From the hoverboards of "Back to the Future" to the gravity guns of "Half-Life 2," science fiction is peppered with antigravity technology. In the real world of peer-reviewed studies, corporate-funded labs and general relativity, however, "antigravity" is a dirty word. Gravity, you undoubted...
into the Sun by Gravity. It is also the reason why stars aren't sucked into the supermassiveblack holes at the centres of galaxies. The stars in the galaxies orbit around the centre of thegalaxy. If you had thought the Sun was static in its location, I hope I have enlightened you. ...
The force of gravity on the moon is much weaker than that on the earth. This means that if you weigh 60 kilograms on the earth, you would weigh only about 10 kilograms on the moon. The underlined word "weigh" in the sentence is a/an ___. A. noun B. verb C. adjective D. adver...
aOil is hard to find, because it is trapped deep under the earth. Once the only way people knew there was oil someplace if it leaked out of the ground. Today, however, we have many ways of finding oil. One tool measures the pull of gravity. Places where gravity is weaker are more ...
Essentially, gravity is an attractive force between objects. Most people are familiar with gravity as the reason behind things staying on the Earth's surface, or "what goes up, must come down," but gravity actually has a much vaster significance. Gravity is responsible for the formation of ou...