Ingenuity is a small robotic helicopter deployed to Mars that is planned to make the first rotor-powered flight on any planet beyond Earth. Ingenuity's total mass is 1.8 kg.

The gravitational field strength on Mars is 3.7 N/kg. The gravitational field strength on Earth is 10 N/kg.

What is the difference in gravitational potential energy for the helicopter on Mars compared to Earth for when it is lifted by 10 meters?

Explain how you solved this.

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.

Kira looked through online census information to determine the overage number of people living in the homes in her city what is true about kira's data collection?