Determine the electrical force of attraction between two balloons with separate charges of -4.5 x 10^-6 C and +3.0 x 10^-8 6 when separated a distance of 0.82
m. Identify the kind of electric force between the charges. Show complete work
to arrive at your final answer.

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?

What pressure difference is required between the ends of a 2.0-m-long, 1.0-mm-diameter horizontal tube for 40 c water to flow through it at an average speed of 4.0 m/s?

You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?