Which of the following statements is true concerning the electrostatic charge on a balloon? Question 17 options:
1) Balloons cannot become charged.
2) The charge completely penetrates the balloon.
3) The charge is only on the surface of the balloon.
4) The charge is only in the center of the balloon.

Orange juice has a lower or higher viscosity than chocolate syrup

You have been hired to design a spring-launched roller coaster thatwill carry two passengers per car. the car goes up a 10-m highhill, then descends 15m to the track's lowest point. you'vedetermined that the spring can be compressed a maximum o 2.0m andthat a loaded car will have a maximum mass of 400kg. for safetyreasons, the spring constant should be 10% larger than the minimumneeded for the car to just make it over the top. a) what spring constant (k) should you specify ? b) what is the maximum speed of a 350 kg car if the spring iscompressed the full amount.

Difference between natural and artifical magnet