The mass of earth is 81 times the mass of the moon. Using Newton’s Law of Gravity what would the affect of gravitation be if the mass of the moon were doubled and the distance was also doubled? A. 1/4 the gravitational attraction

B. twice the gravitational attraction

C. Half the gravitational attraction

D. 4 times the gravitational attraction

In which situation has the independent variable for the experiment been changed? check all that apply. changed from counting the number of duckweed at day 0 and day 14 to counting them every day changed from testing duckweed growth in beakers to testing duckweed growth in large outdoor tanks changed from testing the effect of ph on duckweed growth to testing the effect of light levels on duckweed growth changed from testing the effect of acid ph on duckweed growth to testing the effect of basic ph on duckweed growth

What is the rate of change in a objects position?

A40.0 l tank of ammonia has a pressure of 12.7 kpa. calculate the. volume of the ammonia if it’s pressure is changed to 8.4 kpa while its temperature remains constant.