1. why is the moon’s gravity weaker than earth’s gravity?
2. what two factors affect the force of gravity between two objects?
3. if the distance of two objects decreases, would the force of gravity increase or decrease?
4. consider the law of gravitational attraction. two spheres with a mass, m, are attracted to each other by a force, f. if the distance between the two spheres doubles while the masses remain constant, will the force between the two spheres change? if yes, how?
Answers: 3
Biology, 21.06.2019 12:30
Gregor mendel was the first scientist to use statistics to analyze scientific data before mandel's experiments, scientists believed that organisms acquired traits from their environment and pass them on to their offspring after mendel's discoveries were accepted scientists realized that traits passed to offspring were the result of genes being passed from parent to his parents this is an example of
Answers: 1
Biology, 21.06.2019 20:00
After reading the paragraph below, answer the questions that follow. researchers have created a robot that has a very thin leg that is moved by cardiac (heart) cells contracting in unison. the robot, made of a polymer similar to that used in making contact lenses, is bathed in heart cells with supporting cells, which then attach to the robot and provide movement as they contract. all of the cardiac cells working together can cause the robot leg to move in a way that individual cells could not. this is an example of a. emergent properties of cells. b. energy flow through an ecosystem. c. adaptation. d. internal environment regulation.
Answers: 3
Biology, 22.06.2019 06:30
Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food
Answers: 1
1. why is the moon’s gravity weaker than earth’s gravity?
2. what two factors affect th...
2. what two factors affect th...
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