A positive charge is moving in the direction shown in Figure Q24.18. The magnetic force on the charge is out of the page. Which of the Fout of page magnetic field directions A-D FIGURE Q24.18 could result in this force? There B D may be more than one correct answer.

23. The energy per gallon (not per pound) of liquid hydrogen, compared to gasoline, is about A. 3x less B. about the same C. 3x more D. 12x more

-11 Considering an electron and a proton as two charged particles separated by d = 5.1 x 10 m calculate the value of the the gravitational force between the proton and the electron. Take the mass of the proton 1.7 x 10-27 kg, the mass of the electron 9.1 x 10-31 kg, the value of the =9x10⁹ m/F. Give the answer in 10-47 universal gravitational constant 6.7 x 10-11 N kg 2m-2, the electron charge -1.6 x 10-19 C and 1 Απερ N. For example, if calculated value is 121.6x10-47, then enter 121.6 as your answer. Answer:

2. An astronaut lands on a new planet that scientists had previously determined has a radiusof 107 m. The 100 kg astronaut finds that she weighs 700 N on this new planet. What is themass of the new planet? Show all work.

pls help with Parts b, c & d ASAP, thanks so much!