Practice HW 2

Practice HW 2 - lim (kl9356) Practice HW 2 Weathers (22202)...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: lim (kl9356) Practice HW 2 Weathers (22202) 1 This print-out should have 17 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 10.0 points Suppose that 3 g of hydrogen, H 2 , is separated into electrons and protons, and that the pro- tons are placed at the Earths North Pole and the electrons are placed at the South Pole. The radius of the Earth is 6 . 37 10 6 m. Avogadros number is 6 . 02214 10 23 and the molar mass of the H-atom is 1 . 00782 g / mole. What is the resulting compressional force on the Earth? Answer in units of N. 002 10.0 points Two charges are located in the ( x, y ) plane as shown in the figure below. The fields pro- duced by these charges are observed at a point p with coordinates (0 , 0). The Coulomb constant is 8 . 98755 10 9 N m 2 / C 2 . 7 . 7 C 8 C p 1 . 6 m 1 . 5 m 3 m 2 . 8 m Use Coulombs law to find the x-component of the electric field at p . Answer in units of N / C. 003 (part 1 of 2) 10.0 points Consider three charges arranged as shown. + + 3 . 44 cm 2 . 9 cm 4 . 48 C 5 . 17 C 3 . 79 C The acceleration due to gravity is 9 . 8 m / s 2 . The Coulomb constant is 8 . 98755 10 9 N m 2 / C 2 . What is the electric field at a point 1 . 92 cm to the left of the middle charge? Answer in units of N / C. 004 (part 2 of 2) 10.0 points What is the magnitude of the force on a 3 . 79 C charge placed at this point? Answer in units of N....
View Full Document

Page1 / 4

Practice HW 2 - lim (kl9356) Practice HW 2 Weathers (22202)...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online